ARS HomeMidwest AreaWest Lafayette, IndianaLivestock Behavior ResearchPeople

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**Contact Information:**

**Phone:**      +1 765-494-8022

**Email:**       heng-wei.cheng@usda.gov

**Address:**   270 S. Russell St.

                  West Lafayette, IN 47907

**Areas of Expertise:**

Neuroscience 

Poultry Behavior and Well-Being

Education:

M.D. Medical School of Southeast University, CN

M.S., Harbin Medical University, CN

Ph.D. Wayne State University, Michigan

Post-doctoral Training: University of Southern California, Los Angeles, CA

Dr. Cheng's primary research interest is brain functioning in regulating stress response in farm animals, especially in poultry. His lab studies the cellular and molecular mechanisms of stress-induced neuronal plasticity and behavioral adaptation; and to develop neuroanatomical and neurophysiological quantitative indicators of animal well-being. His current research emphasis is on 1) pain in farm animals, following various management practices, such as beak trimming in poultry; 2) use of probiotics and synbiotics for improving animal well-being; 3) modification of caging environments to improve hen well-being; and 4) prenatal modification of neurotransmitter system for reducing aggression. Integrated morphological, molecular biological, pharmacological, and behavioral approaches to the goal have been designed in my laboratory.

- Publications - (Clicking on the reprint icon  will take you to the publication reprint.)  
- The impact of early-life cecal microbiota transplantation on social stress and injurious behaviors in egg-laying chickens  -(Peer Reviewed Journal)   Fu, Y., Hu, J., Zhang, H., Erasmus, M.A., Johnson, T.A., Cheng, H. 2024. The impact of early-life cecal microbiota transplantation on social stress and injurious behaviors in egg-laying chickens. International Journal of Molecular Sciences.  https://doi.org/10.3390/microorganisms12030471.   
- Daylight exposure and circadian clocks of the 24-h sleep-wake cycle in broilers: Part I - Photoperiod effect on broiler behavior, skeletal health, and fear response  -(Peer Reviewed Journal)   Jiang, S., Fu, Y., Cheng, H. 2023. Daylight exposure and circadian clocks of the 24-h sleep-wake cycle in broilers: Part I - Photoperiod effect on broiler behavior, skeletal health, and fear response. Poultry Science. https://doi.org/10.1016/j.psj.2023.103162.   
- Cecal microbiota transplantation: Unique influence of cecal microbiota from divergently selected inbred donor lines on cecal microbial profile, serotonergic activity, and aggressive behavior of recipient chickens  -(Peer Reviewed Journal)   Fu, Y., Hu, J., Erasmus, M.A., Zhang, H., Johnson, T.A., Cheng, H. 2023. Cecal microbiota transplantation: Unique influence of cecal microbiota from divergently selected inbred donor lines on cecal microbial profile, serotonergic activity, and aggressive behavior of recipient chickens. Journal of Animal Science and Biotechnology. 14(1)Article 66. https://doi.org/10.1186/s40104-023-00866-9.   
- Research Note: Probiotic, Bacillus subtilis, prevents neuroinflammation in the hippocampus via the gut microbiota-brain axis in heat-stressed chickens -(Research Notes)     
- Assessing the effect of compounds from plantar foot sweat, nesting material, and urine on social behavior in male mice, Mus musculus  -(Peer Reviewed Journal)   Barabas, A.J., Soini, H.A., Novotny, M.V., Lucas, J.R., Erasmus, M.A., Cheng, H., Palme, R., Gaskill, B.N. 2023. Assessing the effect of compounds from plantar foot sweat, nesting material, and urine on social behavior in male mice, Mus musculus. PLOS ONE. 17(11). https://doi.org/10.1371/journal.pone.0276844.   
- Effects of a synbiotic as an antibiotic alternative on behavioral exhibition, production performance, cecal microbial ecology, and jejunal histomorphology of broiler chickens under heat stress  -(Peer Reviewed Journal)   Mohammed, A.A., Murugesan, R.G., Hu, J., Cheng, H. 2022. Effects of a synbiotic as an antibiotic alternative on behavioral exhibition, production performance, cecal microbial ecology, and jejunal histomorphology of broiler chickens under heat stress. Applied Animal Behaviour Science. 17(9): e0274179. https://doi.org/10.1371/journal.pone.0274179.   
- The microbiota-gut-brain axis: Gut microbiota modulates conspecific aggression in diversely selected laying hens  -(Peer Reviewed Journal)   Hu, J., Johnson, T., Zhang, H., Cheng, H. 2022. The microbiota-gut-brain axis: Gut microbiota modulates conspecific aggression in diversely selected laying hens. Frontiers in Microbiology.2022; 10(6):1081. https://doi.org/10.3390/microorganisms10061081.   
- Perspective: chicken models for studying the ontogenetic origin of neuropsychiatric disorders  -(Peer Reviewed Journal)   Huang, X., Cheng, H. 2022. Perspective: chicken models for studying the ontogenetic origin of neuropsychiatric disorders. Biomedicines. https://doi.org/10.3390/biomedicines10051155.   
- Effects of early-life cecal microbiota transplantation from divergently selected inbred chicken lines on growth, gut serotonin, and immune parameters in recipient chickens  -(Peer Reviewed Journal)   Fu, Y., Hu, J., Erasmus, M.A., Johnson, T.A., Cheng, H. 2022. Effects of early-life cecal microbiota transplantation from divergently selected inbred chicken lines on growth, gut serotonin, and immune parameters in recipient chickens. Poultry Science. https://doi.org/10.1016/j.psj.2022.101925.   
- Gestational Tryptophan Fluctuation Altering Neuroembryogenesis and Psychosocial Development in chickens  -(Peer Reviewed Journal)   Huang, X., Feng, Z., Cheng, H. 2022. Gestational Tryptophan Fluctuation Altering Neuroembryogenesis and Psychosocial Development in chickens. Cells. https://doi.org/10.3390/cells11081270.   
- The impact of Probiotic, Bacillus subtilis, on injurious behavior in laying hens  -(Peer Reviewed Journal)   Jiang, S., Hu, J., Cheng, H. 2022. The impact of Probiotic, Bacillus subtilis, on injurious behavior in laying hens. Animals. https://doi.org/10.3390/ani12070870.   
- Embryonic exposure to tryptophan yields bullying victimization via reprogramming the microbiota-gut-brain axis in a chicken model  -(Peer Reviewed Journal)   Huang, X., Hu, J., Peng, H., Cheng, H. 2022. Embryonic exposure to tryptophan yields bullying victimization via reprogramming the microbiota-gut-brain axis in a chicken model. Nutrients. 14(3):661. https://doi.org/10.3390/nu14030661.   
- Effect of a synbiotic supplement as an antibiotic alternative on broiler skeletal, physiological, and oxidative parameters under heat stress  -(Peer Reviewed Journal)   Hu, J., Mohammed, A.A., Murugesan, R.M., Cheng, H. 2022. Effect of a synbiotic supplement as an antibiotic alternative on broiler skeletal, physiological, and oxidative parameters under heat stress. Poultry Science. 101(4). Article 101769. https://doi.org/10.1016/j.psj.2022.101769.   
- Perches as cooling devices for reducing heat stress in caged laying hens: A review  -(Peer Reviewed Journal)   Hu, J., Xiong, Y., Gates, R.S., Cheng, H. 2021. Perches as cooling devices for reducing heat stress in caged laying hens: A review. Animals. 11(11). Article 3026. https://doi.org/10.3390/ani11113026.   
- Effects of Bacillus subtilis on production performance, bone physiological property and hematology indexes in laying hens  -(Peer Reviewed Journal)   Jiang, S., Zhang, M., Hu, H., Wu, X., Liu, J., Jln, M., Cheng, H. 2021. Effects of Bacillus subtilis on production performance, bone physiological property and hematology indexes in laying hens. Animals. 11(7). https://doi.org/10.3390/ani11072041.   
- Who’s the boss? Assessing convergent validity of dominance measures in male laboratory mice, Mus musculus  -(Peer Reviewed Journal)   Barabas, A.J., Lucas, J.R., Erasmus, M.A., Cheng, H., Gaskill, B.N. 2021. Who’s the boss? Assessing convergent validity of dominance measures in male laboratory mice, Mus musculus. Journal of Animal Behavior. 8. https://doi.org/10.3389/fvets.2021.695948.   
- Warm perches: A novel approach for reducing cold stress effect on production, plasma hormones, and immunity in laying hens  -(Peer Reviewed Journal)   Hu, J., Cheng, H. 2021. Warm perches: A novel approach for reducing cold stress effect on production, plasma hormones, and immunity in laying hens. Journal of Animal Science and Biotechnology. 100(8). https://doi.org/10.1016/j.psj.2021.101294.   
- Bacillus subtilis-based probiotic improves skeletal health and immunity in broiler chickens exposed to heat stress: An updated review  -(Peer Reviewed Journal)   Jiang, S., Yan, F., Hu, J., Mohammed, A.A., Cheng, H. 2021. Bacillus subtilis-based probiotic improves skeletal health and immunity in broiler chickens exposed to heat stress: An updated review. Animals. 11(6). https://doi.org/10.3390/ani11061494.   
- Effect of a synbiotic supplement on fear response and selected stress indicators in broiler chickens subjected to cyclic heat stress  -(Peer Reviewed Journal)   Mohammed, A.A., Murugesan, R.G., Cheng, H. 2021. Effect of a synbiotic supplement on fear response and selected stress indicators in broiler chickens subjected to cyclic heat stress. Animals. 11(2),427. https://doi.org/10.3390/ani11020427.   
- Effect of dietary supplementation of probiotic (Bacillus subtilis) on bone mass and leg meat quality of broiler chickens  -(Peer Reviewed Journal)   Mohammed, A.A., Zaki, R.S., Negm, E.A., Mahmoud, M.A., Cheng, H. 2020. Effect of dietary supplementation of probiotic (Bacillus subtilis) on bone mass and leg meat quality of broiler chickens. Poultry Science. 100(3), 100906. https://doi.org/10.1016/j.psj.2020.11.073.   
- Osteocalcin prevents insulin resistance, hepatic inflammation and autophagy associated with high-fat diet induced fatty liver hemorrhagic syndrome in aged laying hens  -(Peer Reviewed Journal)   Wu, X.L., Zou, X.Y., Zhang, M., Hu, H.Q., Wei, X.L., Jin, M.L., Cheng, H., Jiang, S. 2020. Osteocalcin prevents insulin resistance, hepatic inflammation and autophagy associated with high-fat diet induced fatty liver hemorrhagic syndrome in aged laying hens. Journal of Animal Science and Biotechnology. 100(1), 73-83. https://doi.org/10.1016/j.psj.2020.10.022.   
- Bacillus subtilis-based probiotic promotes bone growth by inhibition of inflammation in broilers subjected to cyclic heating episodes  -(Peer Reviewed Journal)   Yan, F.F., Wang, W.C., Cheng, H. 2020. Bacillus subtilis-based probiotic promotes bone growth by inhibition of inflammation in broilers subjected to cyclic heating episodes. Poultry Science. 99(11):5252-5260. https://doi.org/10.1016/j.psj.2020.08.051.   
- Design and performance of an experimental cooled perch system for laying hens -(Peer Reviewed Journal)     
- Functional/Physicochemical Properties and Oxidative Stability of Ground Meat from Broilers Reared under Different Photoperiods  -(Peer Reviewed Journal)   Tuell, J., Park, J., Wang, W., Cheng, H., Kim, Y.H. 2020. Functional/Physicochemical Properties and Oxidative Stability of Ground Meat from Broilers Reared under Different Photoperiods. Poultry Science. 99(7), 3761-3768. https://doi.org/10.1016/j.psj.2020.04.021.   
- Effects of photoperiod regime on meat quality, oxidative stability, and metabolites of postmortem broiler fillet (M. Pectoralis major) muscles  -(Peer Reviewed Journal)   Tuell, J.R., Park, J., Wang, W., Cooper, B., Sobreira, T., Cheng, H., Kim, Y.H. 2020. Effects of photoperiod regime on meat quality, oxidative stability, and metabolites of postmortem broiler fillet (M. Pectoralis major) muscles. Foods. 9(2), 215. https://doi.org/10.3390/foods9020215.   
- Effects of a dietary synbiotic supplement on thyroid hormones, intestinal histomorphology, and heat shock protein 70 expression in broiler chickens reared under cyclic heat stress  -(Peer Reviewed Journal)   Mohammed, A.A., Jacobs, J.A., Cramer, T.A., Cheng, H. 2019. Effects of a dietary synbiotic supplement on thyroid hormones, intestinal histomorphology, and heat shock protein 70 expression in broiler chickens reared under cyclic heat stress. Poultry Science. 99(1), 142-150. https://doi.org/10.3382/ps/pez571.   
- Effects of probiotic supplementation and postmortem storage condition on oxidative stability of M. Pectoralis major of laying hens  -(Peer Reviewed Journal)   Xue, S., Hu, J., Cheng, H., Kim, Y.H. 2019. Effects of probiotic supplementation and postmortem storage condition on oxidative stability of M. Pectoralis major of laying hens. Journal of the Science of Food and Agriculture. 98(12):7158-7169. https://doi.org/10.3382/ps/pez518.   
- The maturation of the serotonergic system and its effects on the development of the dopaminergic system during chicken mid-late embryogenesis  -(Peer Reviewed Journal)   Huang, X.H., Kuang, S.H., Applegate, T., Lin, T.L., Cheng, H. 2019. The maturation of the serotonergic system and its effects on the development of the dopaminergic system during chicken mid-late embryogenesis. Molecular and Cellular Endocrinology. https://doi.org/10.1016/j.mce.2019.110472.   
- Effect of cooled perches on the efficacy of an induced molt in White Leghorn laying hens exposed to cyclic heat  -(Peer Reviewed Journal)   Hu, J., Hester, P.Y., Xiong, Y., Gates, R.S., Makagon, M.M., Cheng, H. 2019. Effect of cooled perches on the efficacy of an induced molt in White Leghorn laying hens exposed to cyclic heat. Poultry Science. https://doi.org/10.3382/ps/pez317.   
- Pathophysiological characteristics and gene transcriptional profiling of bone microstructure in a low calcium diet fed caged laying hens  -(Peer Reviewed Journal)   Jiang, S., Wu, X.L., Jin, M.L., Wang, X.Z., Tang, Q., Sun, Y.X., Cheng, H. 2019. Pathophysiological characteristics and gene transcriptional profiling of bone microstructure in a low calcium diet fed caged laying hens. Poultry Science. https://doi.org/10.3382/ps/pez271.   
- Effects of a synbiotic supplement on cecal microbial ecology, antioxidant status, and immune response of broiler chickens reared under heat stress  -(Peer Reviewed Journal)   Mohammed, A.A., Jiang, S., Jacobs, J.A., Cheng, H. 2019. Effects of a synbiotic supplement on cecal microbial ecology, antioxidant status, and immune response of broiler chickens reared under heat stress. Poultry Science. https://doi.org/10.3382/ps/pez246.   
- Effect of cooled perches on performance, plumage condition, and foot health of caged White Leghorn hens exposed to cyclic heat  -(Peer Reviewed Journal)   Hu, J., Hestor, P.Y., Makagon, M.M., Xiong, Y., Gates, R., Cheng, H. 2019. Effect of cooled perches on performance, plumage condition, and foot health of caged White Leghorn hens exposed to cyclic heat. Poultry Science. https://doi.org/10.3382/ps/pez039.   
- Effect of cooled perches on physiological parameters of caged White Leghorn hens exposed to cyclic heat  -(Peer Reviewed Journal)   Hu, J., Hester, P., Makagon, M.M., Xiong, Y., Gates, R., Cheng, H. 2019. Effect of cooled perches on physiological parameters of caged White Leghorn hens exposed to cyclic heat. Poultry Science. https://doi.org/10.3382/ps/pez012.   
- Effects of a dietary synbiotic inclusion on bone health in broilers subjected to cyclic heat stress episodes  -(Peer Reviewed Journal)   Yan, F., Mohammed, A.A., Murugesan, R., Cheng, H. 2019. Effects of a dietary synbiotic inclusion on bone health in broilers subjected to cyclic heat stress episodes. Poultry Science. https://doi.org/10.3382/ps/pey508.   
- Bacillus subtilis based probiotic improved bone mass and altered brain serotoninergic and dopaminergic systems in broiler chickens  -(Peer Reviewed Journal)   Yan, F., Wang, W., Cheng, H. 2018. Bacillus subtilis based probiotic improved bone mass and altered brain serotoninergic and dopaminergic systems in broiler chickens. Journal of Functional Foods. https://doi.org/10.1016/j.jff.2018.09.017.   
- Supplemental impacts of probiotic (Bacillus subtilis) on meat quality and oxidative stability of breast muscle from broilers exposed to chronic heat stress  -(Peer Reviewed Journal)   Cramer, T., Kim, H., Chao, Y., Wang, W., Cheng, H., Kim, Y. 2019. Supplemental impacts of probiotic (Bacillus subtilis) on meat quality and oxidative stability of breast muscle from broilers exposed to chronic heat stress. Poultry Science. 97(9), 3358-3368. https://doi.org/10.3382/ps/pey176.   
- Effects of probiotic supplementation on performance traits, bone mineralization, cecal microbial composition, cytokines, and corticosterone in laying hens  -(Peer Reviewed Journal)   Yan, F., Murugesan, G., Cheng, H. 2018. Effects of probiotic supplementation on performance traits, bone mineralization, cecal microbial composition, cytokines, and corticosterone in laying hens. Animal. 1-9. https://doi.org/10.1017/S175173111800109X.   
- Supplementation of Bacillus subtilis based probiotic reduces heat stress-related behaviors and inflammatory response in broiler chickens  -(Peer Reviewed Journal)   Wang, W., Yan, F., Hu, J., Huang, X., Cheng, H. 2018. Supplementation of Bacillus subtilis based probiotic reduces heat stress-related behaviors and inflammatory response in broiler chickens. Journal of Animal Science. 96(5):1654-1666. doi:10.1093/jas/sky092.   
- Effects of heat stress and probiotic supplementation on protein functionality and oxidative stability of ground chicken leg meat during display storage -(Peer Reviewed Journal)   Kim, H., Kim, J., Yan, F., Cheng, H., Kim, Y. 2017. Effects of heat stress and probiotic supplementation on protein functionality and oxidative stability of ground chicken leg meat during display storage. Journal of the Science of Food and Agriculture. doi:10.1002/jsfa.8423.   
- Brazilian propolis effects on performance, gut characteristics and physiological changes in broiler chickens -(Peer Reviewed Journal)     
- Immune response of laying hens exposed to 30 ppm ammonia for 25 weeks -(Peer Reviewed Journal)   Chen, H., Yan, F., Hu, J., Wu, Y., Tucker, C.M., Green, A.R., Cheng, H. 2017. Immune response of laying hens exposed to 30 ppm ammonia for 25 weeks. Poultry Science. 16(4):139-146. doi:10.3923/ijps.2017.139.146.   
- The effect of chronic ammonia exposure on acute phase proteins, immunoglobulin and cytokines in laying hens -(Peer Reviewed Journal)   Wu, Y., Yan, F., Hu, J., Chen, H., Tucker, C., Green, A.R., Cheng, H. 2017. The effect of chronic ammonia exposure on acute phase proteins, immunoglobulin and cytokines in laying hens. Poultry Science. 96:1524–1530.doi.org/10.3382/ps/pew454.   
- Probiotic supplementation and fast freezing to improve quality attributes and oxidation stability of frozen chicken breast muscle -(Peer Reviewed Journal)   Kim, H., Miller, D.K., Yan, F., Wang, W., Cheng, H., Kim, B. 2016. Probiotic supplementation and fast freezing to improve quality attributes and oxidation stability of frozen chicken breast muscle. Food Chemistry. 75:34-41. doi: http://dx.doi.org/10.1016/j.lwt.2016.08.035.   
- Cooled perch effects on performance and well-being traits in caged White Leghorn hens -(Peer Reviewed Journal)   Hu, J., Hester, P.Y., Makagon, M.M., Vezzoli, G., Gates, R.S., Xiong, Y., Cheng, H. 2016. Cooled perch effects on performance and well-being traits in caged White Leghorn hens. Poultry Science. doi: 10.3382/ps/pew248.   
- The effect of cooled perches on immunological parameters of caged White Leghorn hens during the hot summer months -(Peer Reviewed Journal)   Strong, R.A., Hester, P.Y., Eicher, S.D., Hu, J., Cheng, H. 2015. The effect of cooled perches on immunological parameters of caged White Leghorn hens during the hot summer months. PLoS One. 10(10): e0141215. doi:10.1371/journal.pone.0141215.   
- Acute brief heat stress in late gestation alters neonatal calf innate immune functions -(Peer Reviewed Journal)   Strong, R.A., Silva, E.B., Cheng, H., Eicher, S.D. 2015. Acute brief heat stress in late gestation alters neonatal calf innate immune functions. Journal of Dairy Science. 98:7771-7783. doi.org/10.3168/jds.2015-9591.   
- Functions of Propolis as a natural feed additive in poultry -(Peer Reviewed Journal)   Mahmoud, U.T., Cheng, H., Applegate, T. 2015. Functions of Propolis as a natural feed additive in poultry. World's Poultry Science Journal. 72(01): 37-48. doi: 10.1017/S0043933915002731.   
- Behavioral changes and feathering score in heat stressed broiler chickens fed diets containing different levels of propolis -(Peer Reviewed Journal)   Mahmoud, U.T., Abdel-Rahman, M.A., Darwish, M.H., Applegate, T.J., Cheng, H. 2015. Behavioral changes and feathering score in heat stressed broiler chickens fed diets containing different levels of propolis. Applied Animal Behaviour Science. 166:98-105. DOI:10.1016/j.applanim.2015.03.003.   
- Effect of partial comb and wattle trim on pullet behavior and thermoregulation -(Peer Reviewed Journal)   Hester, P.Y., Al-Ramamneh, D.S., Makagon, M.M., Cheng, H. 2015. Effect of partial comb and wattle trim on pullet behavior and thermoregulation. Poultry Science. 94(5):860-866. doi: 10.3382/ps/pev066.   
- Effect of propolis supplementations on behavioral activities of heat stressed broiler chickens -(Abstract Only)     
- The effect of Brazilian Propolis on leg health in broilers reared under heat stress -(Abstract Only)     
- The effect of Brazilian propolis on serum thyroid hormones in broilers reared under chronic heat stress -(Abstract Only)     
- Methods to address poultry robustness and welfare issues through breeding and associated ethical considerations -(Peer Reviewed Journal)   Muir, W.M., Cheng, H., Croney, C. 2014. Methods to address poultry robustness and welfare issues through breeding and associated ethical considerations. Frontiers in Genetics. DOI: 10.3389/fgene.2014.00407.   
- Serotonin’s role in piglet mortality and thriftiness  -(Peer Reviewed Journal)   Dennis, R.L., McMunn, K.A., Cheng, H., Marchant Forde, J.N., Lay Jr, D.C. 2014. Serotonin’s role in piglet mortality and thriftiness. Journal of Animal Science. 92:4888-4896.   
- Effects of dietary antioxidant on performance and physiological responses following heat stress in laying hens -(Peer Reviewed Journal)   Felver-Gant, J.N., Dennis, R.L., Zhao, J., Cheng, H. 2014. Effects of dietary antioxidant on performance and physiological responses following heat stress in laying hens. International Journal of Poultry Science. 13(5):260-271.   
- The effect of perch availability during pullet rearing and egg laying on the behavior of caged White Leghorn hens  -(Peer Reviewed Journal)   Hester, P.Y., Garner, J.P., Enneking, S.A., Cheng, H., Einstein, M.E. 2014. The effect of perch availability during pullet rearing and egg laying on the behavior of caged White Leghorn hens. Poultry Science. 93(10):2423-2431.   
- The effect of perch access during pullet rearing and egg laying on physiological measurements of stress in 71-week-old White Leghorns  -(Peer Reviewed Journal)   Yan, F., Hester, P.Y., Dennis, R.L., Cheng, H. 2014. The effect of perch access during pullet rearing and egg laying on physiological measurements of stress in 71-week-old White Leghorns. Poultry Science. 93(6):1318-1326.   
- The effects of housing environment on liver health of laying hens  -(Peer Reviewed Journal)   Jiang, S., Hester, P.Y., Hu, J.Y., Yan, F.F., Dennis, R.L., Cheng, H. 2014. The effects of housing environment on liver health of laying hens. Poultry Science. 93:1618-1622.   
- Design and performance of cooled perches for alternative egg laying production systems -(Proceedings)   Gates, R.S., Enneking, S.A., Xiong, Y., Hester, P.Y., Makagon, M.M., Cheng, H. 2014. Design and performance of cooled perches for alternative egg laying production systems. American Society of Agricultural and Biological Engineers. 14-1901235.   
- Postnatal piglet husbandry practices and well-being:  The effects of alternative techniques delivered in combination -(Peer Reviewed Journal)   Marchant Forde, J.N., Lay Jr., D.C., McMunn, K.A., Cheng, H., Marchant-Forde, R.M., Pajor, E.A. 2014. Postnatal piglet husbandry practices and well-being:  The effects of alternative techniques delivered in combination. Journal of Animal Science. 92(3):1150-1160.   
- Differential serotonergic mediation of aggression in roosters selected for resistance and susceptibility to Marek's disease  -(Peer Reviewed Journal)   Dennis, R.L., Cheng, H. 2014. Differential serotonergic mediation of aggression in roosters selected for resistance and susceptibility to Marek's disease. British Poultry Science. 55(1):13-20.   
- Differential serotonergic mediation of aggression in roosters selected for resistance and susceptibility to Marek’s disease -(Peer Reviewed Journal)   Dennis, R.L., Cheng, H. 2014. Differential serotonergic mediation of aggression in roosters selected for resistance and susceptibility to Marek’s disease. British Poultry Science. 55(1):13-20.   
- Effects of early serotonin programming on behavior and central monoamine concentrations in an avian model -(Peer Reviewed Journal)   Dennis, R.L., Lay Jr, D.C., Cheng, H. 2013. Effects of early serotonin programming on behavior and central monoamine concentrations in an avian model. Behavioural Brain Research. 253:290-296.   
- Effects of perch access on physiological parameters in caged White Leghorn pullets -(Peer Reviewed Journal)   Yan, F., Hester, P.Y., Enneking, S.A., Cheng, H. 2013. Effects of perch access on physiological parameters in caged White Leghorn pullets. Poultry Science. 92(11):2853-2859.   
- Development of an enzyme-linked immunosorbent assay for detection of chicken osteocalcin and its use in evaluation of perch effects on bone remodeling in caged White Leghorns  -(Peer Reviewed Journal)   Jiang, S., Cheng, H., Hester, P.Y., Hou, J.F. 2013. Development of an enzyme-linked immunosorbent assay for detection of chicken osteocalcin and its use in evaluation of perch effects on bone remodeling in caged White Leghorns. Poultry Science. 92:1951-1961.   
- A role for serotonin in piglet preweaning mortality -(Abstract Only)   Dennis, R.L., Mcmunn, K.A., Lay  Jr, D.C., Cheng, H. 2013. A role for serotonin in piglet preweaning mortality. Joint Meeting of the ADSA, AMSA, ASAS and PSA. Proceedings.   
- Changes of blood parameters associated with bone remodeling following experimentally induced fatty liver disorder in laying hens -(Peer Reviewed Journal)   Jiang, S., Cheng, H., Cui, L.Y., Zhou, Z.L., Hou, J.F. 2013. Changes of blood parameters associated with bone remodeling following experimentally induced fatty liver disorder in laying hens. Poultry Science. 92:1443-1453.   
- The effect of perch availability during pullet rearing and egg laying on musculoskeletal health of caged White Leghorn hens  -(Peer Reviewed Journal)   Hester, P.Y., Enneking, S.A., Haley, B.K., Cheng, H., Einstein, M.E., Rubin, D.A. 2013. The effect of perch availability during pullet rearing and egg laying on musculoskeletal health of caged White Leghorn hens. Poultry Science. 92(8):1972-1980.   
- The effect of perches in cages during pullet rearing and egg laying on hen performance, foot health, and plumage -(Peer Reviewed Journal)   Hester, P.Y., Enneking, S.A., Jefferson-Moore, K.Y., Einstein, M.E., Cheng, H., Rubin, A. 2013. The effect of perches in cages during pullet rearing and egg laying on hen performance, foot health, and plumage. Poultry Science. 92:310-320.   
- Genetic variations alter production and behavioral responses following heat stress in two strains of laying hens -(Peer Reviewed Journal)   Mack, L.A., Felver-Gant, J.N., Dennis, R., Cheng, H. 2013. Genetic variations alter production and behavioral responses following heat stress in two strains of laying hens. Poultry Science. 92:285-294.   
- Alterations to embryonic serotonin change aggression and fearfulness -(Peer Reviewed Journal)   Dennis, R.L., Fahey, A.G., Cheng, H. 2013. Alterations to embryonic serotonin change aggression and fearfulness. Aggressive Behavior. 39:91-98.   
- Pre-pubertal exposure to mechanical loading in White Leghorn pullets -(Peer Reviewed Journal)   Enneking, S.A., Cheng, H., Jerrerson-Moore, K.Y., Einstein, M.E., Hester, P.Y. 2012. Pre-pubertal exposure to mechanical loading in White Leghorn pullets. Poultry Science. 91:2114-2120.   
- Genetic variations alter physiological responses following heat stress in two laying hen strains -(Peer Reviewed Journal)   Felver-Gant, J.N., Mack, L.A., Dennis, R.L., Eicher, S.D., Cheng, H. 2012. Genetic variations alter physiological responses following heat stress in two laying hen strains. Poultry Science. 91:1542-1551.   
- Effects of different infrared beak treatment protocols on chicken welfare and physiology -(Peer Reviewed Journal)   Dennis, R.L., Cheng, H. 2012. Effects of different infrared beak treatment protocols on chicken welfare and physiology. Poultry Science. 91:1499-1505.   
- Effects of selective serotonin antagonism on central neurotransmission -(Peer Reviewed Journal)   Dennis, R.L., Cheng, H. 2012. Effects of selective serotonin antagonism on central neurotransmission. Poultry Science. 91,817-822.   
- Effects on selective serotonin antagonism on central neurotransmission -(Peer Reviewed Journal)   Dennis, R.L., Cheng, H. 2012. Effects on selective serotonin antagonism on central neurotransmission. Poultry Science. 9(4) 817-822.   
- Genetic variation in resistance to infection and inflammation -(Book / Chapter)     
- The dopaminergic system and aggression in laying hens -(Peer Reviewed Journal)   Dennis, R.L., Cheng, H. 2011. The dopaminergic system and aggression in laying hens. Poultry Science. 90:2440-2448.   
- Strain variations in behavioral traits under heat stress in laying hens -(Abstract Only)     
- Changes in the Heat Stress Response of Laying Hens Following Antioxidant Supplementation -(Abstract Only)   Felver-Gant, J.N., Eicher, S.D., Cheng, H. 2011. Changes in the Heat Stress Response of Laying Hens Following Antioxidant Supplementation. Poultry Science. (E-suppl.1)90:33.   
- The effect of perches installed in conventional cages on White Leghorn pullets -(Abstract Only)     
- Onion consumption and bone density in laying hens -(Abstract Only)     
- Pork Production System and its Development in Mainland China -(Peer Reviewed Journal)   Cheng, H., Wang, Y., Meng, Q., Guo, J., Wang, Y. 2011. Pork Production System and its Development in Mainland China. International Journal of Fisheries and Aquaculture. 3:166-174.   
- Gene Expression of Serotonin and Dopamine Receptors and Monoamine Oxidase-A in the Brain of Dominant and Subordinate Pubertal Pigs Fed a ß-Adrenoreceptor Agonist -(Peer Reviewed Journal)   Poletto, R., Steibel, J.P., Cheng, H., Meisel, R.L., Richert, B.T., Marchant Forde, J.N. 2011. Gene Expression of Serotonin and Dopamine Receptors and Monoamine Oxidase-A in the Brain of Dominant and Subordinate Pubertal Pigs Fed a ß-Adrenoreceptor Agonist. Brain Research. 1381:11-20.   
- Effects of Beak Trimming on Pecking Force -(Peer Reviewed Journal)   Dennis, R.L., Cheng, H. 2010. Effects of Beak Trimming on Pecking Force. International Journal of Poultry Science. 9(3):863-866.   
- The dopaminergic system and aggression in laying hens -(Peer Reviewed Journal)   Dennis, R.L., Cheng, H. 2011. The dopaminergic system and aggression in laying hens. Poultry Science. 90(11): 2440-2448.   
- Different effects of infrared and one-half hot-blade beak trimming on beak topography and growth -(Peer Reviewed Journal)   Marchant Forde, R., Cheng, H. 2010. Different effects of infrared and one-half hot-blade beak trimming on beak topography and growth. Poultry Science. 89(12):2559-2564.   
- Development Effects of Oxytocin in Piglets by Intranasal or Subcutaneous Administration -(Abstract Only)   Rault, J., Carter, C.S., Cheng, H., Garner, J.P., Marchant Forde, J.N., Richert, B.T., Lay  Jr, D.C. 2010. Development Effects of Oxytocin in Piglets by Intranasal or Subcutaneous Administration. Society for Neuroscience Abstracts and Proceedings. Proceedings.   
- A Comparison of the Long Term Effects of Infrared Beak Treatment and Hot Blade Beak Trimming in Laying Hens -(Peer Reviewed Journal)   Dennis, R.L., Cheng, H. 2010. A Comparison of the Long Term Effects of Infrared Beak Treatment and Hot Blade Beak Trimming in Laying Hens. International Journal of Poultry Science. 9:716-719.   
- Effects of Diet and Handling on Behavioral and Neurophysiological Indicators of Aggression in Growing -(Abstract Only)   Poletto, R., Richert, B.T., Cheng, H., Meisel, R.L., Marchant Forde, J.N. 2010. Effects of Diet and Handling on Behavioral and Neurophysiological Indicators of Aggression in Growing [abstract]. Journal of Animal Science, American Society of animal Science, Midwest Meeting, March 15-17, 2010, Des Miones, Iowa. 88:48-49 (E-Suppl. 3).   
- Nutraceutical up-regulation of serotonin paradoxically induces compulsive behavior -(Peer Reviewed Journal)   Dufour, B.D., Adeola, O., Cheng, H., Donkin, S., Klein, J.D., Pajor, E.A., Garner, J.P. 2010. Nutraceutical up-regulation of serotonin paradoxically induces compulsive behavior. Nutritional Neuroscience. 13:256-264.   
- Effects of Early Serotonin Programming on Fear Response, Memory and Aggression -(Abstract Only)   Dennis, R.L., Lay  Jr, D.C., Cheng, H. 2010. Effects of Early Serotonin Programming on Fear Response, Memory and Aggression. International Society of Applied Ethology. Proceedings No. Am. Regional Meeting ISAE.   
- Pain in Chickens and Effects of Beak Trimming -(Proceedings)   Cheng, H. 2010. Pain in Chickens and Effects of Beak Trimming. In: American College of Poultry Veterinarians. Workshop Proceedings Laying Hen and Pullet Well-being, Management and Auditing, April 18, 2010, Vancouver, British Columbia, CA. p.20.   
- Effects of Heat Stress on Egg Production and Quality in Two Strains of Layers -(Abstract Only)   Mack, L.A., Felver-Gant, J.N., Dennis, R.L., Cheng, H. 2010. Effects of Heat Stress on Egg Production and Quality in Two Strains of Layers [abstract]. Poultry Science. 89:M311(E-Suppl. 1).   
- Effects of Different Infrared Beak Treatment Protocols on Chicken Welfare and Physiology -(Abstract Only)   Dennis, R.L., Cheng, H. 2010. Effects of Different Infrared Beak Treatment Protocols on Chicken Welfare and Physiology [abstract]. Poultry Science. 89:261 (E-Suppl. 1).   
- Genetic Variations of Physiological Responses Following Heat Stress in Laying Hens -(Abstract Only)   Felver-Gant, J.N., Mack, L.A., Dennis, R.L., Cheng, H. 2010. Genetic Variations of Physiological Responses Following Heat Stress in Laying Hens [abstract]. Poultry Science. 89:T38(E-Suppl. 1).   
- Effects of Postnatal Serotonin Agonism on Fear Response and Memory -(Abstract Only)   Dennis, R.L., Cheng, H. 2010. Effects of Postnatal Serotonin Agonism on Fear Response and Memory [abstract]. Poultry Science. 89:T7(E-Suppl 1).   
- Aggression in Replacement Grower and Finisher Gilts fed a High-Tryptophan Diet and the Effect of Long-term Human-Animal Interaction -(Peer Reviewed Journal)   Poletto, R., Meisel, R.L., Richert, B.T., Cheng, H., Marchant Forde, J.N. 2010. Aggression in Replacement Grower and Finisher Gilts Fed a High-Tryptophan Diet and the Effect of Long-Term Human-Animal Interaction. Applied Animal Behaviour Science. 122(24):90-110.   
- Aggression, behavior and peripheral amine concentrations in relation to ractopamine feeding, sex, and social rank of finishing pigs -(Peer Reviewed Journal)   Poletto, R., Meisel, R.L., Richert, B.T., Cheng, H., Marchant Forde, J.N. 2010. Aggression, behavior and peripheral amine concentrations in relation to ractopamine feeding, sex, and social rank of finishing pigs. Journal of Animal Science. 88:1184-1194.   
- Postnatal piglet husbandry practices and well-being: The effects of alternative techniques delivered separately -(Peer Reviewed Journal)   Marchant Forde, J.N., Lay  Jr, D.C., Mcmunn, K.A., Cheng, H., Pajor, E.A., Marchant-Forde, R.M. 2009. Postnatal piglet husbandry practices and well-being: The effects of alternative techniques delivered separately. Journal of Animal Science. 87:1479-1492.   
- Breeding of Tomorrow’s Chickens to Improve Well-Being -(Peer Reviewed Journal)   Cheng, H. 2010. Breeding of Tomorrow’s Chickens to Improve Well-Being. Poultry Science. 89(4):805-813.   
- Effects of Repeated Social Disruption on the Serotonergic and Dopaminergic Systems in two Genetic Lines of White Leghorn Layers -(Peer Reviewed Journal)   Fahey, A.G., Cheng, H. 2009. Effects of Repeated Social Disruption on the Serotonergic and Dopaminergic Systems in two Genetic Lines of White Leghorn Layers. Poultry Science. 88:2018-2025.   
- The Effects of Tail Docking Method on Piglets' Behavioral Responses to a Formalin Pain Test -(Abstract Only)   Marchant Forde, J.N., Cheng, H., Lay  Jr, D.C., Pajor, E.A., Marchant-Forde, R.M. 2009. The Effects of Tail Docking Method on Piglets' Behavioral Responses to a Formalin Pain Test. International Society of Applied Ethology. Proceedings.   
- Aggressiveness and brain amines in pigs fed the ß-adrenoreceptor agonist Ractopamine -(Peer Reviewed Journal)   Poletto, R., Richert, B.T., Meisel, R.L., Cheng, H., Marchant Forde, J.N. 2010. Aggressiveness and brain amines in pigs fed the ß-adrenoreceptor agonist Ractopamine. Journal of Animal Science. 88:3107-3120.   
- Furnished Cage System and Hen Well-Being: Comparative Effects of Furnished and Battery Cages on Egg Production and Physiological Parameters of White Leghorn Hens -(Peer Reviewed Journal)   Pohle, K., Cheng, H. 2009. Furnished Cage System and Hen Well-Being: Comparative Effects of Furnished and Battery Cages on Egg Production and Physiological Parameters of White Leghorn Hens. Poultry Science. 88(8):1559-1564.   
- Furnished Cage System and Hen Well-Being: Comparative Effects of Furnished Cages and Battery Cages on Behavioral Exhibitions in White Leghorn Chickens -(Peer Reviewed Journal)   Pohle, K., Cheng, H. 2009. Furnished Cage System and Hen Well-Being: Comparative Effects of Furnished Cages and Battery Cages on Behavioral Exhibitions in White Leghorn Chickens. Poultry Science. 88:1559-1564.   
- Use of Thermography to Screen for Sub-Clinical Bumblefoot in Poultry -(Peer Reviewed Journal)   Wilcox, C.S., Patterson, J., Cheng, H. 2009. Use of Thermography to Screen for Sub-Clinical Bumblefoot in Poultry. Poultry Science. 88:1176-1180.   
- Postnatal piglet husbandry practices and well being:  The effects of alternative techniques delivered separately. -(Peer Reviewed Journal)   Marchant Forde, J.N., Lay  Jr, D.C., Mcmunn, K.A., Cheng, H., Pajor, E.A., Marchant-Forde, R.M. 2009. Postnatal piglet husbandry practices and well being:  The effects of alternative techniques delivered separately.. Journal of Animal Science. 87:1479-1492.   
- Infared beak treatment method compared with conventional hot blade amputation in laying hens -(Peer Reviewed Journal)   Dennis, R.L., Fahey, A.G., Cheng, H. 2009. Infared beak treatment method compared with conventional hot blade amputation in laying hens. Poultry Science. 88:38-43.   
- Group size and density effects on physical indices and cell-mediated immunity in two genetic lines of White Leghorn layers. -(Peer Reviewed Journal)   Fahey, A.G., Cheng, H. 2008. Group size and density effects on physical indices and cell-mediated immunity in two genetic lines of White Leghorn layers.. Poultry Science. 87:2500-2504.   
- The effects of ractopamine, gender and social rank on aggression and peripheral monoamine levels in finishing pigs. -(Abstract Only)   Poletto, R., Garner, J.P., Cheng, H., Marchant Forde, J.N. 2008. The effects of ractopamine, gender and social rank on aggression and peripheral monoamine levels in finishing pigs. Journal of Animal Science. 86(E.Suppl 2):352.   
- Effects of alternatives of molting on bird well-being -(Abstract Only)   Cheng, H., Lay  Jr, D.C., Marchant-Forde, R., Pajor, E. 2008. Effects of alternatives of molting on bird well-being [abstract]. Poultry Science. p. 129.   
- Effects of ractopamine feeding, gender and social rank on aggressiveness and monoamine concentrations in different brain areas of finishing pigs					  -(Abstract Only)   Poletto, R., Cheng, H., Meisel, R.L., Richert, B.T., Marchant Forde, J.N. 2008. Effects of ractopamine feeding, gender and social rank on aggressiveness and monoamine concentrations in different brain areas of finishing pigs [abstract]. In: Eds. L. Boyle, N. O'Connell and A . Hanlon.  Proceedings of the 42nd International Congress of the International Society of Applied Ethology. August 5-9, 2008, Dublin, Ireland. p. 83.   
- Infrared beak treatment: an alternative to conventional beak trimming -(Abstract Only)   Dennis, R.L., Fahey, A.G., Cheng, H. 2008. Infrared beak treatment: an alternative to conventional beak trimming [abstract]. Poultry Science Association Meeting Abstract. p. 44.   
- Different Effects of Individual Identification Systems on Chicken Well-Being -(Peer Reviewed Journal)   Dennis, R., Fahey, A., Cheng, H. 2008. Different Effects of Individual Identification Systems on Chicken Well-Being. Poultry Science. 87:1052-1057.   
- Genetic variations in chicken aggressive behavior: The role of serotonergic system -(Peer Reviewed Journal)   Dennis, R.L., Cheng, Z.Q., Cheng, H. 2008. Genetic variations in chicken aggressive behavior: The role of serotonergic system. Poultry Science. 87:612-620.   
- Different Behavioral and Physiological Response in two Genetic Lines of Laying Hens Following Transportation -(Peer Reviewed Journal)   Cheng, H. and Jefferson, L.D. 2008. Different Behavioral and Physiological Response in two Genetic Lines of Laying Hens Following Transportation. Poultry Science. 87:885-892.   
- Effects of Chronic Intermittent Social Stress on Physical Parameters, Corticosterone Concentrations, and Immune System in two Genetic Lines of White Leghorn Layers -(Peer Reviewed Journal)   Fahey, A.G. and Cheng, H. 2008. Effects of Chronic Intermittent Social Stress on Physical Parameters, Corticosterone Concentrations, and Immune System in two Genetic Lines of White Leghorn Layers. Poultry Science. 87:612-620.   
- Infrared Beak Treatment: Part I, Comparative Effects of Infrared and 1/3 Hot-blade Trimming on Beak Topography, Focal Behavior and Growth. -(Peer Reviewed Journal)   Marchant Forde, R., Fahey, A.G and, Cheng, H. 2008. Infrared Beak Treatment: Part I, Comparative Effects of Infrared and 1/3 Hot-blade Trimming on Beak Topography, Focal Behavior and Growth.. Poultry Science. 87:1474-1483.   
- Animal welfare: Should we change housing to better accommodate the animal or change the animal to accommodate the housing  -(Peer Reviewed Journal)   Cheng, H. 2007. Animal welfare: Should we change housing to better accommodate the animal or change the animal to accommodate the housing. CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources. http://www.cababstractsplus.org/cabreviews/reviews.asp.   
- THE EFFECTS OF DIFFERENT BILL-TRIMMING METHODS ON THE WELL-BEING OF PEKIN DUCKS -(Peer Reviewed Journal)     
- Serotonin and Aggressiveness in Chickens -(Abstract Only)   Cheng, H., and Dennis, R.L. 2007. Serotonin and Aggressiveness in Chickens [abstract]. International Society of Applied Ethology. p.128.   
- Marked for Success?: Identification Systems Impact Poultry Welfare -(Popular Publication)   Dennis, R.L., Fahey, A.G., Cheng, H. 2007. Marked for Success?: Identification Systems Impact Poultry Welfare. Scientists Center for Animal Welfare Newsletter (Quarterly). p. 21.   
- Is carprofen, a non-steroidal anti-inflammatory analgesic, safe for use in Pekin ducks -(Abstract Only)   Tsumugi, K.A., Cheng, H., Marchant Forde, R. 2007. Is carprofen, a non-steroidal anti-inflammatory analgesic, safe for use in Pekin ducks [abstract]. International Society of Applied Ethology. p. 147.   
- Genetic Basis of different Effects of Chronic Intermittent Social Stress on Immune Function and Survivability in laying hens -(Abstract Only)   Fahey, A.G., Marchant Forde, R., Cheng, H. 2007. Genetic Basis of different Effects of Chronic Intermittent Social Stress on Immune Function and Survivability in laying hens [abstract]. Poultry Science Association Meeting Abstract. p. 362.   
- Genetic Variations in Chicken Aggressive Behavior: The Role of Serotonergic System -(Abstract Only)   Dennis, R.L., Cheng, Z.Q., Cheng, H. 2007. Genetic Variations in Chicken Aggressive Behavior: The Role of Serotonergic System [abstract]. Poultry Science Association Meeting Abstract. p. 132.   
- Different Effects of Individual Identification Systems on Chicken Well-Being -(Abstract Only)   Dennis, R.L., Fahey, A.G., Cheng, H. 2007. Different Effects of Individual Identification Systems on Chicken Well-Being [abstract]. Poultry Science Association Meeting Abstract. 86(1):362.   
- Can dietary molting replace feed withdrawal molting? -(Abstract Only)     
- Relationship between Body Weight and Beak Characteristics in One-Day-Old White Leghorn Chicks: its implications for beak trimming -(Peer Reviewed Journal)     
- REDUCED EXPRESSION OF PROTEASOME 26S IN HYPOTHALAMUS OF HEAT STRESSED PIGS AND HYPOTHALAMIC CELLS -(Abstract Only)   Rogers, C.B., Collins, J.S., Lay  Jr, D.C., Cheng, H., Sartin, J.L., Schwartz, D.D. 2005. Reduced expression of proteasome 26s in hypothalamus of heat stressed pigs and hypothalamic cells. Experimental Biology.   
- MECHANISMS OF AGRESSION AND PRODUCTION IN CHICKENS: GENETIC VARIATIONS IN THE FUNCTIONS OF SEROTONIN, CATECHOLAMINE, AND CORTICOSTERONE -(Peer Reviewed Journal)     
- EFFECTS OF RACLOPRIDE ON AGGRESSION AND STRESS IN DIVERSELY SELECTED CHICKEN LINES -(Peer Reviewed Journal)   Dennis, R.L., Muir, W.M., Cheng, H. 2006. Effects of raclopride on aggression and stress in diversely selected chicken lines. Behavioural Brain Research. 175(1):104.   
- Effect of selection for resistance and susceptibility to viral diseases on concentrations of dopamine and immunological parameters in six-week-old chickens -(Peer Reviewed Journal)   Dennis, R., Zhang, H.M., Cheng, H.W. 2006. Effect of selection for resistance and susceptibility to viral diseases on concentrations of dopamine and immunological parameters in six-week-old chickens. Poultry Science. 85:2135-2140.   
- ALTERNATIVE PIGLET PROCESSING PROCEDURES GIVEN SINGLY AFFECT CORTISOL, BEHAVIOR AND GROWTH -(Abstract Only)   Marchant Forde, J.N., Lay  Jr, D.C., Marchant Forde, R., McMunn, K.A., Pajor, E.A., Cheng, H. 2006. Alternative piglet processing procedures given singly affect cortisol, behavior and growth. Journal of Animal Science. 84(1):412.   
- RELATIONSHIP BETWEEN BODY WEIGHT AND BEAK CHARACTERISTICS IN 1 D OLD LAYER CHICKS -(Abstract Only)   Fahey, A.G., Marchant Forde, R., Cheng, H. 2006. Relationship between body weight and beak characteristics in 1 d old layer chicks. Poultry Science Association Meeting Abstract. 85(1):104.   
- INFRARED BEAK TREATMENT: PART I, COMPARATIVE EFFECTS OF INFRARED AND 1/3 HOT-BLADE TRIMMING ON BEAK TOPOGRAPHY AND GROWTH. -(Abstract Only)   Marchant Forde, R., Cheng, H. 2006. Infrared beak treatment: part i, comparative effects of infrared and 1/3 hot-blade trimming on beak topography and growth.. Poultry Science Association Meeting Abstract. 85(1):104.   
- EFFECTS OF CHRONIC SOCIAL STRESS ON CIRCULATING LEVELS OF HORMONES IN THREE GENETIC STRAINS OF LEGHORN HENS -(Abstract Only)   Fahey, A.G., Marchant Forde, R., Cheng, H. 2006. Effects of chronic social stress on circulating levels of hormones in three genetic strains of leghorn hens. International Society of Applied Ethology. p. 146.   
- EFFECTS OF RACLOPRIDE ON AGGRESSION AND STRESS IN DIVERSELY SELECTED CHICKEN LINES -(Abstract Only)   Dennis, R.L., Muir, W.M., Cheng, H. 2006. Effects of raclopride on aggression and stress in diversely selected chicken lines. International Society of Applied Ethology. p. 144.   
- INFRARED BEAK TREATMENT: PART III, COMPARATIVE EFFECTS OF INFRARED AND 1/2 HOT-BLADE TRIMMING ON BEAK TOPOGRAPHY AND GROWTH. -(Abstract Only)   Marchant Forde, R., Cheng, H. 2006. Infrared beak treatment: part iii, comparative effects of infrared and 1/2 hot-blade trimming on beak topography and growth.. Poultry Science Association Meeting Abstract. 85(1):105.   
- INFRARED BEAK TREATMENT: PART II, COMPARATIVE EFFECTS OF INFRARED AND 1/3 HOT-BLADE TRIMMING ON BEHAVIOR AND FEEDING ABILITY -(Abstract Only)   Marchant Forde, R., Cheng, H. 2006. Infrared beak treatment: part ii, comparative effects of infrared and 1/3 hot-blade trimming on behavior and feeding ability. Poultry Science Association Meeting Abstract. 85(1):104.   
- COMPARATIVE EFFECTS OF INFRARED AND HOT-BLADE TRIMMING ON FEEDING BEHAVIOR AND PRODUCTIVITY -(Abstract Only)   Marchant Forde, R., Cheng, H. 2006. Comparative effects of infrared and hot-blade trimming on feeding behavior and productivity. International Society of Applied Ethology. p. 49.   
- THE IMPACT OF ROUTINE PIGLET PROCESSING PROCEDURES ON WELL-BEING. II. IDENTIFICATION, IRON ADMINISTRATION AND COMBINED PROCESSING -(Abstract Only)   Marchant Forde, J.N., Lay  Jr, D.C., Marchant Forde, R., Mcmunn, K.A., Cheng, H. 2006. The impact of routine piglet processing procedures on well-being. ii. identification, iron administration and combined processing. Proceedings of the North American Regional Meeting of the International Society of Applied Ethology. p. 48.   
- THE IMPACT OF ROUTINE PIGLET PROCESSING PROCEDURES ON WELL-BEING. I. TEETH RESECTION, TAIL-DOCKING, AND CASTRATION -(Abstract Only)   Lay  Jr, D.C., Marchant Forde, J.N., Marchant Forde, R., McMunn, K.A., Cheng, H. 2006. The impact of routine piglet processing procedures on well-being. i. teeth resection, tail-docking, and castration. Proceedings of the North American Regional Meeting of the International Society of Applied Ethology. p. 46.   
- APPEARANCE MATTERS: ARTIFICIAL MARKING ALTERS AGGRESSION AND STRESS -(Peer Reviewed Journal)     
- SHORT COMMUNICATIONS: BEHAVIORAL AND PHYSIOLOGICAL INDICATORS OF SENSITIVITY OR CHRONIC PAIN FOLLOWING TAIL-DOCKING IN DAIRY CATTLE -(Peer Reviewed Journal)   Eicher, S.D., Cheng, H., Sorrells, A.D., Schutz, M.M. 2006. Short communications: behavioral and physiological indicators of sensitivity or chronic pain following tail-docking in dairy cattle. Journal of Dairy Science. 89:3047-3051.   
- TWO ALTERNATIVE COMBINATIONS OF PIG PROCESSING METHODS AFFECT CORTISOL AND BEHAVIOR -(Abstract Only)   Lay  Jr, D.C., Marchant Forde, J.N., Mcmunn, K.A., Marchant Forde, R., Pajor, E.A., Cheng, H. 2006. Two alternative combinations of pig processing methods affect cortisol and behavior. Journal of Animal Science. 84(1):412.   
- Effects of bill-trimming Muscovy ducks on behavior, body weight gain, and bill morphopathology -(Peer Reviewed Journal)   Gustafson, L.A., Cheng, H., Garner, J.P., Pajor, E.A., Mench, J.A. 2007. Effects of bill-trimming Muscovy ducks on behavior, body weight gain, and bill morphopathology. Applied Animal Behavior Science. 103:59-74.   
- DIFFERENTIAL REGULATION OF THE GROWTH-ASSOCIATED PROTEINS GAP-43 AND SUPERIOR CERVICAL GANGLION 10 IN RESPONSE TO LESIONS OF THE CORTEX AND SUBSTANTIA NIGRA IN THE ADULT RAT -(Peer Reviewed Journal)     
- MORPHOPATHOLOGICAL CHANGES AND PAIN IN BEAK TRIMMED LAYING HENS -(Peer Reviewed Journal)     
- THE IMMUNOMODULATORY EFFECTS OF CLONIDINE, AN ALPHA-2-ADRENERGIC AGONIST, IN LAYING HENS  -(Peer Reviewed Journal)     
- GENETIC RELATED DIFFERENCES IN RESPONSE TO CHRONIC STRESS IN LAYING HENS -(Abstract Only)   Marchant Forde, R., Jefferson, L., Cheng, H., Muir, W.M. 2005. Genetic related differences in response to chronic stress in laying hens. International Society of Applied Ethology. p. 68.   
- COMPARATIVE HISTOLOGY OF DUCK BILLS FOLLOWING DIFFERENT BILL TRIMMING PRACTICES -(Abstract Only)   Cheng, H., Gustafson, L., Pajor, E.A., Mench, J.A. 2005. Comparative histology of duck bills following different bill trimming practices. Poultry Science Association Meeting Abstract. 84(1):82.   
- EFFECTS OF BILL-TRIMMING ON THE WELFARE OF DUCKS -(Abstract Only)   Gustafson, L., Cheng, H., Garner, J.P., Pajor, E.A., Mench, J.A. 2005. Effects of bill-trimming on the welfare of ducks. International Society of Applied Ethology. p. 56.   
- EFFECTS OF CHRONIC STRESS ON RESPONSE TO SOCIAL ISOLATION IN THREE GENETIC STRAINS OF LEGHORN HENS -(Abstract Only)   Fahey, A., Cheng, H., Marchant Forde, R. 2005. Effects of chronic stress on response to social isolation in three genetic strains of leghorn hens. International Society of Applied Ethology. p. 70.   
- BEHAVIORAL CHANGES AND PRODUCTION PERFORMANCE OF LAYING HENS IN FURNISHED CAGES VS. CONVENTIONAL CAGES -(Abstract Only)   Cheng, H., Pohle, K.M. 2005. Behavioral changes and production performance of laying hens in furnished cages vs. conventional cages. International Society of Applied Ethology. p. 136.   
- EFFECT OF HEAT STRESS ON GENE EXPRESSION IN HIPPOCAMPUS -(Abstract Only)   El-Orabi, N., Rogers, C.B., Lay  Jr, D.C., Cheng, H., Sartin, J.L., Schwartz, D.D. 2005. Effect of heat stress on gene expression in hippocampus. Experimental Biology.   
- GENETIC SELECTION IN POULTRY: PHYSIOLOGICAL FACTORS ASSOCIATED WITH PRODUCTION AND SURVIVABILITY -(Peer Reviewed Journal)   Cheng, H., Muir, M.W. 2005. Genetic selection in poultry: physiological factors associated with production and survivability. World's Poultry Science Journal. 61:383-398.   
- BREEDING FOR PRODUCTIVITY AND WELFARE OF LAYING HENS -(Book / Chapter)   Muir, W.M., Cheng, H. 2004. Breeding for productivity and welfare of laying hens. In: Perry, G., editor. Welfare of the Laying Hen. Cambridge, MA: CABI Publishing. p. 123-138.   
- EXPERIENCE-DEPENDENT CHANGES IN THE HIPPOCAMPUS OF DOMESTIC CHICKS: A MODEL FOR SPATIAL MEMORY -(Peer Reviewed Journal)   Freire, R., Cheng, H. 2004. Experience-dependent changes in the hippocampus of domestic chicks: a model for spatial memory. European Journal of Neuroscience. 20(4):1065-1068.   
- BEHAVIORAL AND PHYSIOLOGICAL FEATURES OF CHICKENS DIVERSELY SELECTED FOR RESISTANCE TO AVIAN DISEASE. 1. SELECTED INBRED LINES DIFFER FOR BEHAVIORAL AND PHYSICAL RESPONSES TO SOCIAL STRESS -(Peer Reviewed Journal)   Dennis, R., Zhang, H., Bacon, L.D., Esteves, I., Cheng, H. 2004. Behavioral and physiological features of chickens diversely selected for resistance to avian disease. 1. Selected inbred lines differ for behavioral and physical responses to social stress. Poultry Science. 83(9):1489.   
- HOUSING EFFECT OF BEHAVIOR & PHYSIOLOGY DURING A FEED-WITHDRAWAL MOLT IN LAYING HENS: FURNISHED CAGES VS. CONVENTIONAL CAGES -(Abstract Only)   Pohle, K., Cheng, H. 2004. Housing effect of behavior & physiology during a feed-withdrawal molt in laying hens: Furnished cages vs. conventional cages. Poultry Science. 83(S1):361.   
- EFFECTS OF ACUTE STRESS ON PHYSICAL AND HORMONAL RESPONSES IN THREE GENETIC STRAINS OF LAYING HENS -(Abstract Only)   Jefferson, L., Cheng, H. 2004. Effects of acute stress on physical and hormonal responses in three genetic strains of laying hens. Poultry Science Meeting. 83(S1):361.   
- DOPAMINE -(Book / Chapter)     
- ELECTROENCEPHALOGRAM -(Book / Chapter)     
- ENDORPHINS -(Book / Chapter)     
- ENKEPHALINS -(Book / Chapter)     
- NEURON -(Book / Chapter)     
- SEROTONIN -(Book / Chapter)     
- THE CENTRAL NERVOUS SYSTEM -(Book / Chapter)     
- INFARARED BEAK TREATMENT VS. HOT-BLADE BEAK TRIMMING EFFECTS ON LAYING HEN WELL-BEING -(Abstract Only)   Cheng, H., Horn, N.L., Wilcox, C.S. 2004. Infarared beak treatment vs. hot-blade beak trimming effects on laying hen well-being. International Society of Applied Ethology. 38:195.   
- EFFECTS OF BILL-TRIMMING ON THE WELFARE OF MUSCOVY DUCKS -(Abstract Only)   Gustafson, L., Cheng, H., Pajor, E., Mench, J.A. 2004. Effects of bill-trimming on the welfare of muscovy ducks. Poultry Science. 22:207.   
- MARKED FOR STRESS -(Abstract Only)   Dennis, R., Estevez, I., Cheng, H. 2004. Marked for stress. International Society of Applied Ethology. p. 18.   
- ACUTE AND CHRONIC PAIN IN BEAK TRIMMED CHICKENS -(Book / Chapter)     
- TOLL-LIKE RECEPTORS 2 (TLR2) AND 4 (TLR4) OF PORCINE BLOOD LEUKOCYTES DURING HEAT-STRESS -(Abstract Only)   Eicher, S.D., Sartin, J.L., Schwartz, D.D., Lay, Jr., D.C., Cheng, H. 2004. Toll-like receptors 2 (TLR2) and 4 (TLR4) of porcine blood leukocytes during heat-stress [absreact]. Veterinary Immunology International Symposium. p. 240.   
- NEUROPHYSIOLOGIC REGULATION AND ANIMAL WELL-BEING IN POULTRY LAYING HENS -(Proceedings)   Cheng, H. 2003. Neurophysiologic regulation and animal well-being in poultry laying hens. Trends in Agricultural Science. p. 15.   
- BEHAVIOR OF CHICKS AFTER BEAK TRIMMING: INDICATORS OF PAIN AND WELFARE -(Abstract Only)     
- DIFFERENT EFFECTS OF ENDOTOXIN STRESS ON CHICKENS FROM DIFFERENT GENETIC LINES: I. SICKNESS BEHAVIORAL AND PHYSICAL RESPONSES -(Peer Reviewed Journal)   Cheng, H., Freire, R., Pajor, E. 2004. Different effects of endotoxin stress on chickens from different genetic lines: I. Sickness behavioral and physical responses. Poultry Science. 83:707-715.   
- DEVELOPMENT OF SPATIAL MEMORY IN OCCLUSION-EXPERIENCED DOMESTIC CHICKS -(Peer Reviewed Journal)     
- BREEDING FOR PRODUCTIVITY AND WELFARE OF LAYING HENS -(Proceedings)     
- ADRENERGIC REGULATION OF IMMUNITY IN LAYING HENS -(Abstract Only)   Cheng, H., Lay  Jr, D.C., Pajor, E. 2003. Adrenergic regulation of immunity in laying hens. Poultry Science. 82(1):60.   
- TOLL-LIKE RECEPTOR AND ACUTE PHASE CYTOKINE EXPRESSION IN GENETICALLY SELECTED LINE OF LAYERS FOLLOWING AN LPS CHALLENGE -(Abstract Only)   EICHER, S.D., CHENG, H. TOLL-LIKE RECEPTOR AND ACUTE PHASE CYTOKINE EXPRESSION IN GENETICALLY SELECTED LINE OF LAYERS FOLLOWING AN LPS CHALLENGE. ARS IMMUNOLOGY WORKSHOP. 2003. V. 17:C51.   
- HOUSING EFFECT ON BEHAVIOR AND PRODUCTION PERFORMANCE OF LAYING HENS: ENRICHED VS. CONVENTIONAL CAGES -(Abstract Only)   POHLE, K., CHENG, H. HOUSING EFFECT ON BEHAVIOR AND PRODUCTION PERFORMANCE OF LAYING HENS: ENRICHED VS. CONVENTIONAL CAGES. POULTRY SCIENCE. 2003.   
- BONE MINERAL DENSITY OF LAYING HENS HOUSED IN ENRICHED VERSUS CONVENTIONAL CAGES -(Abstract Only)   KOPKA, M.N., CHENG, H., HESTER, P.Y. BONE MINERAL DENSITY OF LAYING HENS HOUSED IN ENRICHED VERSUS CONVENTIONAL CAGES. POULTRY SCIENCE. 2003.   
- TOLL-LIKE RECEPTOR 2 AND ACUTE PHASE CYTOKINE RESPONSES BY GENETICALLY SELECTED CHICKENS FOLLOWING AN LPS CHALLENGE -(Abstract Only)   EICHER, S.D., CHENG, H. TOLL-LIKE RECEPTOR 2 AND ACUTE PHASE CYTOKINE RESPONSES BY GENETICALLY SELECTED CHICKENS FOLLOWING AN LPS CHALLENGE. JOURNAL OF IMMUNOLOGY. 2003. P. 28.   
- SOCIAL STRESS IN LAYING HENS: DIFFERENTIAL EFFECT OF STRESS ON PLASMA DOPAMINE CONCENTRATIONS AND ADRENAL FUNCTION IN GENETICALLY SELECTED CHICKENS -(Peer Reviewed Journal)   CHENG, H., SINGLETON, P.B., MUIR, W.M. SOCIAL STRESS IN LAYING HENS: DIFFERENTIAL EFFECT OF GENETIC-ENVIRONMENTAL INTERACTIONS ON PLASMA DOPAMINE CONCENTRATIONS AND ADRENAL FUNCTION IN GENETICALLY SELECTED CHICKENS. POULTRY SCIENCE. 2003. V. 82. P. 192-198.   
- DIFFERENTIAL PHYSIOLOGICAL RESPONSES TO LPS INJECTION IN CHICKENS FROM DIFFERENT GENETIC LINES -(Abstract Only)   CHENG, H., FREIRE, R., MUIR, W.M. DIFFERENTIAL PHYSIOLOGICAL RESPONSES TO LPS INJECTION IN CHICKENS FROM DIFFERENT GENETIC LINES. SOCIETY FOR NEUROSCIENCE. 2002. V. 32. ABSTRACT P. 304.3.   
- MORPHOLOGICAL AND PHYSIOLOGICAL RESPONSES TO INDUCED MOLTING IN LAYING HENS -(Abstract Only)   CHENG, H., FREIRE, R. MORPHOLOGICAL AND PHYSIOLOGICAL RESPONSES TO INDUCED MOLTING IN LAYING HENS. MEETING ABSTRACT. 2002. P. 100.   
- BEHAVIORAL RESPONSES TO INDUCED MOLTING IN LAYING HENS -(Abstract Only)   CHENG, H., FREIRE, R. BEHAVIORAL RESPONSES TO INDUCED MOLTING IN LAYING HENS. POULTRY SCIENCE ASSOCIATION MEETING ABSTRACT. 2002. V. 80(SUPPL.1): ABSTRACT P. 102.   
- DEVELOPMENT OF SPATIAL COGNITION AND HIPPOCAMPUS STRUCTURE IN DOMESTIC CHICKS -(Abstract Only)   FREIRE, R., CHENG, H. DEVELOPMENT OF SPATIAL COGNITION AND HIPPOCAMPUS STRUCTURE IN DOMESTIC CHICKS. INTERNATIONAL SOCIETY OF APPLIED ETHOLOGY. 2002. ABSTRACT P. 49.   
- SOCIAL STRESS IN LAYING HENS:DIFFERENTIAL DOPAMINE ANDCORTICOSTERONE RESPONSES FOLLOWING INTERMINGLING DIFFERENT GENETIC STRAIN CHICKENS -(Peer Reviewed Journal)   CHENG, H., SINGLETON, P.B., MUIR, W.M. SOCIAL STRESS IN LAYING HENS:DIFFERENTIAL DOPAMINE ANDCORTICOSTERONE RESPONSES FOLLOWING INTERMINGLING DIFFERENT GENETIC STRAIN CHICKENS. POULTRY SCIENCE. 2002. V. 81. P. 1265-1272.   
- CHRONIC SOCIAL STRESS DIFFERENTIALLY REGULATES NEUROENDOCRINE RESPONSES IN LAYING HENS: I. GENETIC BASIS OF DOPAMINE RESPONSES UNDER THREE DIFFERENT  SOCIAL CONDITIONS -(Peer Reviewed Journal)   CHENG, H., CHEN, Y., SINGLETON, P.B., MUIR, W.M. CHRONIC SOCIAL STRESS DIFFERENTIALLY REGULATES NEUROENDOCRINE RESPONSES IN LAYING HENS: I. GENETIC BASIS OF DOPAMINE RESPONSES UNDER THREE DIFFERENT  SOCIAL CONDITIONS. JOURNAL OF PSYCHONEUROENDOCRINOLOGY. 2003. V. 28. P. 597-611.   
- CHRONIC SOCIAL STRESS DIFFERENTIALLY REGULATES NEUROENDOCRINE RESPONSES IN LAYING HENS: II. GENETIC BASIS OF ADRENAL RESPONSES UNDER THREE DIFFERENT  SOCIAL CONDITIONS -(Peer Reviewed Journal)   Cheng, H., Chen, Y., Singleton, P.B., Muir, W.M. 2004. Chronic social stress differentially regulates neuroendocrine responses in laying hens: II. Genetic basis of adrenal responses under three different  social conditions. Journal of Psychoneuroendocrinology. 97:961-971.   
- PHYSIOLOGICAL INDICATORS OF HENS' WELL-BEING ARE RELATED TO GENETIC SELECTIONS FOR ADAPTABILITY TO CAGED PRODUCTION SYSTEMS -(Proceedings)   CHENG, H., SINGLETON, P.B., MUIR, W.W. PHYSIOLOGICAL INDICATORS OF HENS' WELL-BEING ARE RELATED TO GENETIC SELECTIONS FOR ADAPTABILITY TO CAGED PRODUCTION SYSTEMS. MEETING ABSTRACT. 2001. P. 325-334.   
- DIFFERENT REGULATION OF PHYSIOLOGICAL HOMEOSTASIS AND BEHAVIORAL RESPONSE  TO SOCIAL STRESS IN TWO GENETICALLY SELECTED LINES OF LAYING HENS -(Abstract Only)   CHENG, H., FREIRE, R., SINGLETON, P.B., CHEN, Y., PAJOR, E., MUIR, M.W. DIFFERENT REGULATION OF PHYSIOLOGICAL HOMEOSTASIS AND BEHAVIORAL RESPONSE  TO SOCIAL STRESS IN TWO GENETICALLY SELECTED LINES OF LAYING HENS. INTERNATIONAL SOCIETY OF APPLIED ETHOLOGY. 2001. V. 35. P. 128.   
- GENETICALLY DIFFERENTIAL REGULATION OF THE SEROTONIN SYSTEM BETWEEN BLOOD AND BRAIN IN LAYING HENS IN RESPONSE TO SOCIAL STRESS -(Abstract Only)   CHENG, H., SINGLETON, P.B., CHEN, Y., MUIR, W.M. GENETICALLY DIFFERENTIAL REGULATION OF THE SEROTONIN SYSTEM BETWEEN BLOOD AND BRAIN IN LAYING HENS IN RESPONSE TO SOCIAL STRESS. SOCIETY FOR NEUROSCIENCE. 2001. V. 31. P. 1896.   
- EFFECT OF GENETIC SELECTION FOR PRODUCTIVITY AND LONGEVITY ON BLOOD CONCENTRATIONS OF SEROTONIN, CATECHALAMINE AND CORTICOSTERONE OF CHICKENS -(Peer Reviewed Journal)   CHENG, H., DILLWORTH, G.A., SINGLETON, P.B., CHEN, Y., MUIR, W.M. EFFECT OF GENETIC SELECTION FOR PRODUCTIVITY AND LONGEVITY ON BLOOD CONCENTRATIONS OF SEROTONIN, CATECHALAMINE AND CORTICOSTERONE OF CHICKENS. JOURNAL OF POULTRY SCIENCE. 2001. V. 80. P. 1278-1285.   
- SOCIAL STRESS INDUCED DIFFERENT ALTERATIONS OF DOPAMINE CONCENTRATIONS AND ADRENAL FUNCTION TO GENETICALLY SELECTED CHICKEN LINES -(Abstract Only)   CHENG, H., SINGLETON, P.B., CHEN, Y., MUIR, M.W. SOCIAL STRESS INDUCED DIFFERENT ALTERATIONS OF DOPAMINE CONCENTRATIONS AND ADRENAL FUNCTION TO GENETICALLY SELECTED CHICKEN LINES. JOURNAL OF ANIMAL SCIENCE. 2001. V. 80(1). P. 345.   
- THE RELATIONSHIP BETWEEN PHYSIOLOGICAL PARAMETERS AND BEHAVIORAL RESPONSE TO SOCIAL STRESS AMONG THREE GENETIC LINES OF LAYING HENS -(Abstract Only)   FREIRE, R., SINGLETON, P.B., CHEN, Y., MUIR, M.W., PAJOR, E., CHENG, H. THE RELATIONSHIP BETWEEN PHYSIOLOGICAL PARAMETERS AND BEHAVIORAL RESPONSE TO SOCIAL STRESS AMONG THREE GENETIC LINES OF LAYING HENS. JOURNAL OF ANIMAL SCIENCE. 2001. V.80(SUPPL.1): ABSTRACT P. 280.   
- STRESS INDUCED DIFFERENT CHANGES OF IGG CONCENTRATIONS AND HEMATOLOGICAL PARAMETERS IN GENETICALLY SELECTED CHICKEN LINES -(Abstract Only)   CHEN, Y., SINGLETON, P.B., MUIR, M.W., CHENG, H. STRESS INDUCED DIFFERENT CHANGES OF IGG CONCENTRATIONS AND HEMATOLOGICAL PARAMETERS IN GENETICALLY SELECTED CHICKEN LINES. JOURNAL OF ANIMAL SCIENCE. 2001. V. 80(SUPPL.1): ABSTRACT P. 280.   
- EFFECT OF GENETIC SELECTION FOR GROUP PRODUCTIVITY AND LONGEVITY ON IMMUNOLOGICAL AND HEMATOLOGICAL PARAMETERS OF CHICKENS -(Peer Reviewed Journal)   CHENG, H., EICHER, S.D., CHEN, Y., SINGLETON, P.B., MUIR, W.M. EFFECT OF GENETIC SELECTION FOR GROUP PRODUCTIVITY AND LONGEVITY ON IMMUNOLOGICAL AND HEMATOLOGICAL PARAMETERS OF CHICKENS. JOURNAL OF POULTRY SCIENCE. 2001. V. 80. P. 1079-1086.   
- EFFECT OF GENETIC SELECTION ON IMMUNOCOMPETENCE IN CHICKEN LINES SELECTED FOR HIGH AND LOW AGGRESSIVENESS -(Abstract Only)   CHEN, Y., CHENG, H., EICHER, S.D., MUIR, W.M. EFFECT OF GENETIC SELECTION ON IMMUNOCOMPETENCE IN CHICKEN LINES SELECTED FOR HIGH AND LOW AGGRESSIVENESS. SOCIETY FOR NEUROSCIENCE. 2001. V. 26. ABSTRACT P. 1181.   
- GENETIC SELECTION-INDUCED ALTERATIONS IN EXPRESSION OF CATECHOLAMINE AND SEROTONIN IN CHICKENS -(Abstract Only)   CHENG, H., DILLWORTH, G.A., MUIR, W.M. GENETIC SELECTION-INDUCED ALTERATIONS IN EXPRESSION OF CATECHOLAMINE AND SEROTONIN IN CHICKENS. INTERNATIONAL SOCIETY OF APPLIED ETHOLOGY. 2000. P. 15.   

- Projects Thermal perches as warming devices for reducing cold stress in laying hensCooperative Agreement (A) Accession Number:445376Thermal perches as warming devices for reducing cold stress in laying hensCooperative Agreement (A) Accession Number:445408Optimizing Welfare for Food Producing AnimalsIn-House Appropriated (D) Accession Number:442656Thermal Perches as Warming Devices for Reducing Cold Stress in Caged Laying HensInteragency Reimbursable Agreement (I) Accession Number:444006Institutional Biological Safety Committee (IBC) Agreement - Purdue UniversityNon-Funded Cooperative Agreement (N) Accession Number:442029
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