U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Food Animal Environmental Systems Research: Bowling Green, KY
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    Careers


        


                    Models & Software
                        Sorption Isotherm Spreadsheets
                                    Annual Phosphorus Loss Estimator (APLE) Model
                                    Modified Arcsine Log Calibration Curve (ALCC)Search small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Midwest Area Bowling Green, Kentucky Food Animal Environmental Systems Research People







Getahun  Agga    Research Microbiologist /ARSUserFiles/49388/Agga-ProfilePicture-1-mod.JPG
 **Contact Information** Phone: +1 270-781-2260 ext. 232 Email: getahun.agga@usda.gov  **Areas of Expertise** Antimicrobial Resistance Foodborne Pathogens Research Microbiology Epidemiology Veterinary Medicine
 **Education** **DVM:** Veterinary Medicine, 2003, Addis Ababa University **MSc:** Veterinary Epidemiology and Economics, 2008, Utrecht University **PhD:** Pathobiology (epidemiology concentration), 2013, Kansas State University **Postdoc:** Research Microbiologist, 2013-2017, USDA-ARS, U.S. Meat Animal Research Center
 Dr. Getahun E. Agga is a Research Microbiologist at USDA-ARS Food Animal Environmental Systems Research Unit in Bowling Green, Kentucky focusing on antimicrobial resistance and food safety. **Areas of research** 1) understand the epidemiology and dynamics of Salmonella, its antimicrobial resistance and serotype distribution in broiler production, 2) understand the epidemiology of antimicrobial resistance in broiler production using extended spectrum beta-lactamase producing E. coli as an indicator bacterium, 3) identify and evaluate alternative to antibiotics such as vaccines, biochar, phages, and probiotics for the control of antimicrobial resistant and foodborne bacteria in animal production facilities, 4) evaluate and improve manure treatment technologies such as anaerobic digestion and composting for safe utilization of animal manure as organic fertilizer, 5) evaluate detection and sampling methods for the study of antimicrobial resistant bacteria from animal production facilities, 6) use mathematical modeling, systematic reviews and meta-analysis, quantitative risk analysis, and machine learning to understand the complexity of antimicrobial resistance and to devise mitigation strategies.
 /ARSUserFiles/49388/rohan and getahun lab.jpg
 /ARSUserFiles/49388/getahun lab.JPG
 Publications(Clicking on the reprint iconReprint Icon  will take you to the publication reprint.)Effect of biochar on generic and antibiotic resistant bacteria in dairy cattle manure composting-(Abstract Only)Effect of poultry litter soil amendment on antibiotic-resistant Escherichia coli-(Peer Reviewed Journal) Agga, G.E., Durso, L.M., Sistani, K.R. 2024. Effect of poultry litter soil amendment on antibiotic-resistant Escherichia coli. Journal of Environmental Quality. https://doi.org/10.1002/jeq2.20560.Efficacy of novel staphylococcal surface associated protein vaccines against Staphylococcus aureus and non-aureus staphylococcal mastitis in dairy cows-(Peer Reviewed Journal) Vidlund, J., Gelalcha, B.D., Gillespie, B.E., Agga, G.E., Schneider, L., Swanson, S.M., Frady, K.D., Kerro Dego, O. 2024. Efficacy of novel staphylococcal surface associated protein vaccines against Staphylococcus aureus and non-aureus staphylococcal mastitis in dairy cows. Vaccine. https://doi.org/10.1016/j.vaccine.2024.01.067.Prevalence and antimicrobial resistance of escherichia coli O157:H7 and salmonella, and the prevalence of staphylococcus aureus in dairy cattle and camels under pastoral production system-(Peer Reviewed Journal) Hunduma, D., Amenu, K., Desta, H., Grace, D., Agga, G.E., Kerro Dego, O. 2023. Prevalence and antimicrobial resistance of escherichia coli O157:H7 and salmonella, and the prevalence of staphylococcus aureus in dairy cattle and camels under pastoral production system. Antibiotics. 13(1). Article 26. https://doi.org/10.3390/antibiotics13010026.Microbiome diversity of anaerobic digesters is enhanced by microaeration and low frequency sound-(Peer Reviewed Journal) Loughrin, J.H., Parekh, R.R., Agga, G.E., Silva, P.J., Sistani, K.R. 2023. Microbiome diversity of anaerobic digesters is enhanced by microaeration and low frequency sound. Microorganisms. 11(9), Article 2349. https://doi.org/10.3390/microorganisms11092349.Dynamics of extended spectrum beta-lactamase producing, third generation cephalosporin-resistant and tetracycline-resistant Escherichia coli in feedlot cattle with or without tylosin administration-(Peer Reviewed Journal) Agga, G.E., Galloway, H.O. 2023. Dynamics of extended spectrum beta-lactamase producing, third generation cephalosporin-resistant and tetracycline-resistant Escherichia coli in feedlot cattle with or without tylosin administration. Journal of Food Protection. https://doi.org/10.1016/j.jfp.2023.100144.Aminopyralid herbicide residual concentration in dairy manure composted with biochar-(Abstract Only) Netthisinghe, A., Woosley, P., Agga, G.E., Strunk, W., Parris, S., Sistani, K.R. 2023. Aminopyralid herbicide residual concentration in dairy manure composted with biochar [abstract]. American Society of Agronomy Meetings. https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/149626.Effects of cropping systems on soil physicochemical properties and abundances and spatial distributions of nitrogen-cycling bacteria-(Peer Reviewed Journal) Netthisinghe, A., Galloway, H., Agga, G.E., Gunter, P., Sistani, K.R. 2023. Effects of cropping systems on soil physicochemical properties and abundances and spatial distributions of nitrogen-cycling bacteria. Agronomy. 13(6). Article 1461. https://doi.org/10.3390/agronomy13061461.Effect of continuous in-feed administration of tylosin to feedlot cattle on macrolide and tetracycline resistant enterococci in a randomized field trial-(Peer Reviewed Journal) Agga, G.E., Galloway, H., Appala, K., Mahmoudi, F., Kasumba, J., Loughrin, J.H., Conte, E. 2023. Effect of continuous in-feed administration of tylosin to feedlot cattle on macrolide and tetracycline resistant enterococci in a randomized field trial. Preventive Veterinary Medicine. 215. Article 105930. https://doi.org/10.1016/j.prevetmed.2023.105930.Evaluation of immunogenicity of enterobactin conjugate vaccine for the control of E. coli mastitis in dairy cows-(Peer Reviewed Journal) Zeng, X., Vidlund, J., Gillespie, B., Cao, L., Agga, G.E., Lin, J., Kerro Dego, O. 2023. Evaluation of immunogenicity of enterobactin conjugate vaccine for the control of E. coli mastitis in dairy cows. Journal of Dairy Science. https://doi.org/10.3168/jds.2022-23219.Plant extracts mediated syntheses of nanoparticles and their effectiveness on agricultural pathogens-(Abstract Only) Lovanh, N.C., Oh, B., Agga, G.E., Ruiz, G., Loughrin, J.H., Sistani, K.R. 2023. Plant extracts mediated syntheses of nanoparticles and their effectiveness on agricultural pathogens. American Society for Microbiology Annual Meeting. abstract# 2634.Experimental evaluation of tylosin use for the prevention of liver abscesses in beef cattle on bacterial resistance to critically important antibiotics for human use-(Abstract Only)Occurrence and prevalence of antimicrobial resistance in urban karst
groundwater systems based on targeted resistome analysis-(Peer Reviewed Journal) Kaiser, R.A., Polk, J., Datta, T., Keely, S., Brinkman, N., Parekh, R.R., Agga, G.E. 2023. Occurrence and prevalence of antimicrobial resistance in urban karst groundwater systems based on targeted resistome analysis. Science of the Total Environment. 874. Article 162571. https://doi.org/10.1016/j.scitotenv.2023.162571.Prevalence and whole-genome sequencing characterization of
Salmonella in urban karst groundwater and predominantly
groundwater-fed surface waters for serotypes and antimicrobial
resistance-(Peer Reviewed Journal) Agga, G.E., Kaiser, R., Polk, J., Allard, M. 2023. Prevalence and whole-genome sequencing characterization of Salmonella in urban karst groundwater and predominantly groundwater-fed surface waters for serotypes and antimicrobial resistance. Journal of Environmental Quality. 52(3):691-705. https://doi.org/10.1002/jeq2.20470.Core genome sequencing analysis of E. coli O157:H7 unravelling genetic relatedness among strains from cattle, beef and humans in Bishoftu, Ethiopia-(Peer Reviewed Journal) Gutema, F.D., De Zutter, L., Piérard, D., Hinckel, B., Imamura, H., Rasschaert, G., Abdi, R.D., Agga, G.E., Crombé, F. 2023. Core genome sequencing analysis of E. coli O157:H7 unravelling genetic relatedness among strains from cattle, beef and humans in Bishoftu, Ethiopia. Microbiology Research. 14(1):148-160. https://doi.org/10.3390/microbiolres14010013.Liquid chromatography mass spectrometry (LCMS) method development for determination of ß-defensins in bovine milk-(Abstract Only)Identification of virulence genes of Mycoplasma bovis by transposon mutation coupled with in vivo infection-(Abstract Only)Effects of age and pasture type on the concentration and prevalence of tetracycline and macrolide resistant Enterococcus species in beef cow-calf production system-(Peer Reviewed Journal) Agga, G.E., Galloway, H.O., Netthisinghe, A.M. 2022. Effects of age and pasture type on the concentration and prevalence of tetracycline and macrolide resistant Enterococcus species in beef cow-calf production system. Frontiers in Antibiotics. 1:1052316. https://doi.org/10.3389/frabi.2022.1052316.Tetracycline-resistant, third-generation cephalosporin–resistant, and extended-spectrum b-lactamase–producing Escherichia coli in a beef cow-calf production system-(Peer Reviewed Journal) Agga, G.E., Galloway, H.O., Netthisinghe, A.M., Schmidt, J.W., Arthur, T.M. 2022. Tetracycline-resistant, third-generation cephalosporin–resistant, and extended-spectrum b-lactamase–producing Escherichia coli in a beef cow-calf production system. Journal of Food Protection. 85(11):1522-1530. https://doi.org/10.4315/JFP-22-178.Hygienic assessment of fish handling practices along production and supply chain and its public health implications in Central Oromia, Ethiopia-(Peer Reviewed Journal) Bedane, T., Agga, G.E., Gutema, F.D. 2022. Hygienic assessment of fish handling practices along production and supply chain and its public health implications in Central Oromia, Ethiopia. Scientific Reports. 12:13910. https://doi.org/10.1038/s41598-022-17671-5.Antimicrobial resistance of staphylococci at animal human interface in smallholder dairy farms in Central Oromia, Ethiopia-(Peer Reviewed Journal) Marami, L.M., Berhanu, G., Tekle, M., Agga, G.E., Beyene, T.J., Tufa, T.B., Beyi, A.F., Edao, B.M. 2022. Antimicrobial resistance of staphylococci at animal human interface in smallholder dairy farms in Central Oromia, Ethiopia. Infection and Drug Resistance. 15:3767-3777. https://doi.org/10.2147/IDR.S370592.Regulation mechanisms of virulence genes in enterohemorrhagic Escherichia coli-(Peer Reviewed Journal) Gelalcha, B.D., Brown, S., Crocker, H., Agga, G.E., Kerro Dego, O. 2022. Regulation mechanisms of virulence genes in enterohemorrhagic Escherichia coli. Foodborne Pathogens and Disease. 19(9). https://doi.org/10.1089/fpd.2021.0103.Nitrogen cycling bacteria abundance in tall fescue pasture and wheat - soybean double crop soils with light spring grazing-(Abstract Only)Tetracycline- and macrolide-resistant Enterococcus species isolated from a mink farm in the United States-(Peer Reviewed Journal) Agga, G.E., Silva, P.J., Martin, R.S. 2022. Tetracycline- and macrolide-resistant Enterococcus species isolated from a mink farm in the United States. Microbial Drug Resistance. 28(6):734-743. https://doi.org/10.1089/mdr.2021.0438.Dynamics, serotypes, and antimicrobial resistance of salmonella in a karst ground water system-(Abstract Only) Agga, G.E., Kaiser, R., Polk, J., Allard, M. 2022. Dynamics, serotypes, and antimicrobial resistance of salmonella in a karst ground water system. International Association for Food Protection. P1-178.Occurrence of antibiotic resistant bacteria in urban karst groundwater systems-(Peer Reviewed Journal) Kaiser, R.A., Polk, J., Datta, T., Parekh, R.R., Agga, G.E. 2022. Occurrence of antibiotic resistant bacteria in urban karst groundwater systems. Water. 14(6). Article 960. https://doi.org/10.3390/w14060960.Prevalence of antimicrobial resistant and extended-spectrum beta-lactamase-producing Escherichia coli in dairy cattle farms in east Tennessee-(Peer Reviewed Journal) Gelalcha, B.D., Ensermu, D.B., Agga, G.E., Vancuren, M., Gillespie, B.E., D'Souza, D.H., Okafor, C., Dego, O.K. 2022. Prevalence of antimicrobial resistant and extended-spectrum beta-lactamase-producing Escherichia coli in dairy cattle farms in east Tennessee. Foodborne Pathogens and Disease. 19(6). https://doi.org/10.1089/fpd.2021.0101.Lagoon, anaerobic digestion, and composting of animal manure treatments impact on tetracycline resistance genes-(Peer Reviewed Journal) Agga, G.E., Couch, M., Parekh, R.R., Mahmoudi, F., Appala, K., Kasumba, J., Loughrin, J.H., Conte, E.D. 2022. Lagoon, anaerobic digestion, and composting of animal manure treatments impact on tetracycline resistance genes. Antibiotics. 11(3). Article 391. https://doi.org/10.3390/antibiotics11030391.Antimicrobial usage for the management of mastitis in the USA: Impacts on antimicrobial resistance and potential alternative approaches-(Book / Chapter) Gelalcha, B.D., Agga, G.E., Kerro Dego, O. 2021. Antimicrobial usage for the management of mastitis in the USA: Impacts on antimicrobial resistance and potential alternative approaches. Intech. https://doi.org/10.5772/intechopen.101533.Prevalence, serotypes, and antimicrobial resistance of Salmonella from mink feces and feed in the United States-(Peer Reviewed Journal) Agga, G.E., Silva, P.J., Martin, R.S. 2021. Prevalence, serotypes, and antimicrobial resistance of Salmonella from mink feces and feed in the United States. Foodborne Pathogens and Disease. 19(1):45-55. https://doi.org/10.1089/fpd.2021.0037.Evaluation of Streptococcus uberis surface proteins as vaccine antigens to control S. uberis mastitis in dairy cows-(Peer Reviewed Journal) Kerro Dego, O., Almeida, R.A., Ivey, S., Agga, G.E. 2021. Evaluation of Streptococcus uberis surface proteins as vaccine antigens to control S. uberis mastitis in dairy cows. Vaccines. 9(8). Article 868. https://doi.org/10.3390/vaccines9080868.Assessment of beef carcass contamination with Salmonella and E. coli O 157 in slaughterhouses in Bishoftu, Ethiopia-(Peer Reviewed Journal) Gutema, F.D., Abdi, R.D., Agga, G.E., Firew, S., Rasschaert, G., Mattheus, W., Crombe, F., Duchateau, L., Gabriel, S., De Zutter, L. 2021. Assessment of beef carcass contamination with Salmonella and E. coli O 157 in slaughterhouses in Bishoftu, Ethiopia. International Journal of Food Contamination. 8. Article 3. https://doi.org/10.1186/s40550-021-00082-1.Prevalence of mastitis and antibiotic resistance of bacterial
isolates from cmt positive milk samples obtained from
dairy cows, camels, and goats in two pastoral districts in
southern Ethiopia-(Peer Reviewed Journal) Balemi, A., Gumi, B., Amenu, K., Girma, S., Gebru, M., Tekle, M., Agga, G.E., Rius, A., D'Souza, D., Kerro Dego, O. 2021. Prevalence of mastitis and antibiotic resistance of bacterial isolates from cmt positive milk samples obtained from dairy cows, camels, and goats in two pastoral districts in southern Ethiopia. Animals. 11(6). Article 1530. https://doi.org/10.3390/ani11061530.Detection of extended-spectrum beta-lactamase-producing and carbapenem-resistant bacteria from mink feces and feed in the United States-(Peer Reviewed Journal) Agga, G.E., Silva, P.J., Martin, R.S. 2021. Detection of extended-spectrum beta-lactamase-producing and carbapenem-resistant bacteria from mink feces and feed in the United States. Foodborne Pathogens and Disease. 18(7): 497-505. https://doi.org/10.1089/fpd.2020.2898.Assessment of hygienic practices in beef cattle slaughterhouses and retail shops in Bishoftu, Ethiopia: Implications for public health-(Peer Reviewed Journal) Gutema, F.D., Agga, G.E., Abdi, R.D., Alemnesh, J., Duchateau, L., De Zeutter, L., Gabriel, S. 2021. Assessment of hygienic practices in beef cattle slaughterhouses and retail shops in Bishoftu, Ethiopia: Implications for public health. International Journal of Environmental Research and Public Health. 18(5),2729. https://doi.org/10.3390/ijerph18052729.Dipylidium caninum infection in dogs and humans in Bishoftu town, Ethiopia-(Peer Reviewed Journal) Gutema, F.D., Yohannes, G.W., Abdi, R.D., Abuna, F., Ayana, D., Waktole, H., Amenu, K., Hiko, A., Agga, G.E. 2020. Dipylidium caninum infection in dogs and humans in Bishoftu town, Ethiopia. Diseases. 9(1). https://doi.org/10.3390/diseases9010001.Antibiotic use in poultry production in selected districts of east Showa zone, central Ethiopia: from antibiotic stewardship perspective-(Peer Reviewed Journal) Woyessa, M., Agga, G.E., Gumi, B., Ayana, D., Mamo, G. 2020. Antibiotic use in poultry production in selected districts of east Showa zone, central Ethiopia: from antibiotic stewardship perspective. American-Eurasian Journal of Scientific Research. 15(3):101-111.Anaerobic digestion of tetracycline spiked livestock manure and poultry litter increased the abundances of antibiotic and heavy metal resistance genes-(Peer Reviewed Journal) Agga, G.E., Kasumba, J., Loughrin, J.H., Conte, E.D. 2020. Anaerobic digestion of tetracycline spiked livestock manure and poultry litter increased the abundances of antibiotic and heavy metal resistance genes. Frontiers in Microbiology. 11. Article 614424. https://doi.org/10.3389/fmicb.2020.614424.Prevalence, antimicrobial resistance, and molecular characterization of salmonella in cattle, beef, and diarrheic patients in Bishoftu, Ethiopia-(Peer Reviewed Journal) Gutema, F.D., Rasschaert, G., Agga, G.E., Merera, O., Duguma, A.B., Abdi, R.D., Duchateau, L., Mattheus, W., Gabriel, S., De Zeutter, L. 2021. Prevalence, antimicrobial resistance, and molecular characterization of salmonella in cattle, beef, and diarrheic patients in Bishoftu, Ethiopia. Foodborne Pathogens and Disease. 18(4):283-289. https://doi.org/10.1089/fpd.2020.2869.Evaluation of options to control bovine tuberculosis in Ethiopia using multi-criteria decision analysis-(Peer Reviewed Journal) Gutema, F.D., Agga, G.E., Makita, K., Smith, R.L., Mourits, M., Tufa, T.B., Leta, S., Beyene, T.J., Asseffa, Z., Urge, B., Ameni, G. 2020. Evaluation of options to control bovine tuberculosis in Ethiopia using multi-criteria decision analysis. Frontiers in Veterinary Science. 7. Article 586056. https://doi.org/10.3389/fvets.2020.586056.Prevalence and detection of antimicrobial-resistant bacteria in dairy cattle farm environments in East Tennessee-(Abstract Only)Grain yield and beef cow–calf growth performance in dual-Purpose and conventional grain wheat production systems and stockpiled tall fescue pasturing-(Peer Reviewed Journal) Netthisinghe, A., Galloway, H., DeGraves, F., Agga, G.E., Sistani, K.R. 2020. Grain yield and beef cow–calf growth performance in dual-Purpose and conventional grain wheat production systems and stockpiled tall fescue pasturing. Agronomy Journal. 10(10). Article 1543. https://doi.org/10.3390/agronomy10101543.Efficacy of diminazene diaceturate and isometamidium chloride hydrochloride for the treatment of Trypanosoma evansi in mice model-(Peer Reviewed Journal) Aregawi, W.G., Gutema, F., Tesfaye, J., Sorsa, A., Megersa, B., Teshome, P., Agga, G.E., Ashenafi, H. 2020. Efficacy of diminazene diaceturate and isometamidium chloride hydrochloride for the treatment of Trypanosoma evansi in mice model. Journal of Parasitic Diseases. 45:131-136. https://doi.org/10.1007/s12639-020-01289-3.Third-generation cephalosporin- and tetracycline-resistant escherichia coli and antimicrobial resistance genes from metagenomes of mink feces and feed-(Peer Reviewed Journal) Agga, G.E., Silva, P.J., Martin, R.S. 2020. Third-generation cephalosporin- and tetracycline-resistant escherichia coli and antimicrobial resistance genes from metagenomes of mink feces and feed. Foodborne Pathogens and Disease. 18(3):169-178. https://doi.org/10.1089/fpd.2020.2851.Occurrence, molecular characteristics, and antimicrobial resistance of Escherichia coli O157 in cattle, beef and humans in Bishoftu Town, Central Ethiopia-(Peer Reviewed Journal) Gutema, F.D., Rasschaert, G., Agga, G.E., Jufare, A., Duguma, A.B., Abdi, R.D., Duchateau, L., Crombe, F., Gabriel, S., De Zeutter, L. 2020. Occurrence, molecular characteristics, and antimicrobial resistance of Escherichia coli O157 in cattle, beef and humans in Bishoftu Town, Central Ethiopia. Foodborne Pathogens and Disease. 18(1);1-7. https://doi.org/10.1089/fpd.2020.2830.Milk symposium review: Community-tailored training to improve
the knowledge, attitudes, and practices of women regarding hygienic milk production and handling in Borana pastoral area of southern Ethiopia-(Peer Reviewed Journal) Amenu, K., Agga, G.E., Kumbe, A., Shibiru, A., Desta, H., Tiki, W., Kerro Dego, O., Wieland, B., Grace, D., Alonso, S. 2020. Milk symposium review: Community-tailored training to improve the knowledge, attitudes, and practices of women regarding hygienic milk production and handling in Borana pastoral area of southern Ethiopia. Journal of Dairy Science. 103(11):9748-9757. https://doi.org/10.3168/jds.2020-18292.Reused poultry litter microbiome with competitive exclusion potential against Salmonella Heidelberg-(Peer Reviewed Journal) Bucher, M., Zwirzitz, B., Oladeinde, A.A., Cook, K.L., Plymel, C., Zock, G., Aggrey, S., Ritz, C., Looft, T.P., Lipp, E., Agga, G.E., Sistani, K.R. 2020. Reused poultry litter microbiome with competitive exclusion potential against Salmonella Heidelberg. Journal of Environmental Quality. 49(4):869-881. https://doi.org/10.1002/jeq2.20081.Bovine cysticercosis and human taeniasis in a rural community in Ethiopia-(Peer Reviewed Journal) Gutema, F.D., Teferi, S., Agga, G.E., Abdi, R.D., Hiko, A., Tufa, T.B., Hailu, Y. 2020. Bovine cysticercosis and human taeniasis in a rural community in Ethiopia. Zoonoses and Public Health. 67(5):525-533. https://doi.org/10.1111/zph.12716.Occurrence, genetic relatedness and antimicrobial resistance of Escherichia coli O157 in cattle, beef, and humans in Ethiopia-(Abstract Only)Effect of antibiotics on methane gas production during anaerobic digestion of agricultural waste-(Abstract Only) Bhavsar, V., Kasumba, J., Agga, G.E., Loughrin, J.H., Conte, E.D., Antle, S.W., Parekh, R.R. 2020. Effect of antibiotics on methane gas production during anaerobic digestion of agricultural waste. Meeting Abstract. Paper No. 626-2P.Effect of in-feed tylosin use in feedlot cattle on dynamics of antibiotic resistant enterococci and resistance genes-(Abstract Only)Effect of in-feed tylosin use in feedlot cattle on dynamics of antibiotic resistant enterococci and resistance genes-(Abstract Only) Agga, G.E., Galloway, H.O., Degraves, F., Conte, E.D. 2019. Effect of in-feed tylosin use in feedlot cattle on dynamics of antibiotic resistant enterococci and resistance genes. Research Workers in Animal Diseases Conference Proceedings. Paper No. P015.Anaerobic digestion of livestock and poultry manures spiked with tetracycline antibiotics-(Peer Reviewed Journal) Kasumba, J., Appala, K., Agga, G.E., Loughrin, J.H., Conte, E.D. 2019. Anaerobic digestion of livestock and poultry manures spiked with tetracycline antibiotics. Journal of Environmental Science and Health. 55(2):135-147. https://doi.org/10.1080/03601234.2019.1667190.Epidemiological survey of peste des petits ruminants in Ethiopia: Cattle as potential sentinel for surveillance-(Peer Reviewed Journal) Agga, G.E., Raboisson, D., Walch, L., Alemayehu, F., Semu, D.T., Bahiru, G., Woube, Y.A., Belihu, K., Tekola, B.G., Bekana, M., Roger, F., Waret-Szkuta, A. 2019. Epidemiological survey of peste des petits ruminants in Ethiopia: Cattle as potential sentinel for surveillance. Frontiers in Veterinary Science. 6:302. https://doi.org/10.3389/fvets.2019.00302.PFGE XbaI® Indistinguishable properties of Salmonella Kastrup and Salmonella Larochelle isolates at beef processing and distribution continuum-(Peer Reviewed Journal) Hiko, A., Agga, G.E., Brautigam, L., Irsigler, H., Ameni, G., Reinhard, F. 2019. PFGE XbaI® Indistinguishable properties of Salmonella Kastrup and Salmonella Larochelle isolates at beef processing and distribution continuum. Ethiopian Veterinary Journal. 23(2):1-12.Interventions towards improving the microbiological quality of traditional yoghurt in Borana pastoral communities, Ethiopia-(Abstract Only) Amenu, K., Wieland, B., Agga, G.E., Kerro Dego, O., Tiki, W., Desta, H., Grace, D., Amdhun, K., Hunduma, D., Hilali, M., Alonso, S. 2019. Interventions towards improving the microbiological quality of traditional yoghurt in Borana pastoral communities, Ethiopia. American Dairy Science Association Abstracts. Paper No. 77836.Temporal effects of organic and synthetic fertilizers on selected antibiotic resistant bacteria in the soil-(Abstract Only) Agga, G.E., Durso, L.M., Sistani, K.R. 2019. Temporal effects of organic and synthetic fertilizers on selected antibiotic resistant bacteria in the soil. American Society for Microbiology. Paper No. AES-1037.Prevalence and serotype diversity of Salmonella in apparently healthy
cattle: Systematic review and meta-analysis of published studies,
2000–2017-(Peer Reviewed Journal) Gutema, F.D., Agga, G.E., Abdi, R.D., De Zeutter, L., Duchateau, L., Gabriël, S. 2019. Prevalence and serotype diversity of Salmonella in apparently healthy cattle: Systematic review and meta-analysis of published studies, 2000–2017. Frontiers in Veterinary Science. 6:102. https://doi.org/10.3389/fvets.2019.00102.Occurrence and antimicrobial resistance patterns of Escherichia coli O157: H7 and non-typhoid Salmonella in milk and feces of lactating dairy cows and camels in Borana, Southern Ethiopia-(Abstract Only) Hunduma, D., Alonso, S., Agga, G.E., Kerro Dego, O., Wieland, B., Desta, H., Grace, D., Amenu, K. 2019. Occurrence and antimicrobial resistance patterns of Escherichia coli O157: H7 and non-typhoid Salmonella in milk and feces of lactating dairy cows and camels in Borana, Southern Ethiopia. International Association for Food Protection. Poster No. P2-249.Persistence of antibiotic resistance genes in beef cattle backgrounding environment over two years after cessation of operation-(Peer Reviewed Journal) Agga, G.E., Cook, K.L., Netthisinghe, A.M., Gilfillen, R.A., Woosley, P.B., Sistani, K.R. 2019. Persistence of antibiotic resistance genes in beef cattle backgrounding environment over two years after cessation of operation. PLoS One. 12(2):1-19. https://doi.org/10.1371/journal.pone.0212510.Biogenic silica extraction and comparison of agricultural residues for potential adsorbent material-(Abstract Only) Lovanh, N.C., Loughrin, J.H., Agga, G.E., Oh, B., Ruiz-Aguilar, G. 2019. Biogenic silica extraction and comparison of agricultural residues for potential adsorbent material. American Chemical Society Abstracts. Paper No. 3097306.Systematic review and meta-analysis on the global distribution, host range, and prevalence of Trypanosoma evansi-(Peer Reviewed Journal) Aregawi, W.G., Agga, G.E., Abdi, R.D., Buscher, P. 2019. Systematic review and meta-analysis on the global distribution, host range, and prevalence of Trypanosoma evansi. Parasites & Vectors. 12:67. https://doi.org/10.1186/s13071-019-3311-4.Abundances of tetracycline resistance genes and tetracycline
antibiotics during anaerobic digestion of swine waste-(Peer Reviewed Journal) Couch, M., Agga, G.E., Kasumba, J., Parekh, R.R., Loughrin, J.H., Conte, E.D. 2019. Abundances of tetracycline resistance genes and tetracycline antibiotics during anaerobic digestion of swine waste. Journal of Environmental Quality. 48(1):171-178. https://doi.org/10.2134/jeq2018.09.0331.Epidemiology of camelpox in Afar region of Ethiopia-(Abstract Only) Aregawi, W.G., Agga, G.E., Gishe, J., Abdi, R. 2018. Epidemiology of camelpox in Afar region of Ethiopia. Research Workers in Animal Diseases Conference Proceedings. Paper No. 150.Anaerobic degradation of tetracycline antibiotics in agricultural manure-(Abstract Only) Kasumba, J., Appala, K., Agga, G.E., Loughrin, J.H., Conte, E.D. 2019. Anaerobic degradation of tetracycline antibiotics in agricultural manure. Proceedings of Pittcon Meeting. Poster No. 890-2P.Quantification of tylosin antibiotics and antibiotic resistance genes in cattle waste-(Abstract Only) Appala, K., Conte, E., Kasumba, J., Agga, G.E., Loughrin, J.H., Carlisle, A. 2019. Quantification of tylosin antibiotics and antibiotic resistance genes in cattle waste. Proceedings of Pittcon Meeting. Poster No. 890-1P.Quantification of tylosin antibiotics and antibiotic resistance genes in cattle waste-(Abstract Only) Appala, K., Kasumba, J., Conte, E., Agga, G.E., Loughrin, J.H., Carlisle, A. 2018. Quantification of tylosin antibiotics and antibiotic resistance genes in cattle waste. Kentucky Academy of Sciences Symposium. Oral Presentation.Seroprevalence and participatory epidemiology of camelpox in Afar region of Ethiopia-(Peer Reviewed Journal) Aregawi, W.G., Agga, G.E., Gishe, J., Abdi, R.D. 2018. Seroprevalence and participatory epidemiology of camelpox in Afar region of Ethiopia. Preventive Veterinary Medicine. 161:25-32. https://doi.org/10.1016/j.prevetmed.2018.10.003.Solid phase extraction of tylosin from cattle waste with determination by liquid chromatography mass spectrometry-(Abstract Only) Carlisle, A., Appala, K., Conte, E., Kasumba, J., Agga, G.E., Loughrin, J.H. 2018. Solid phase extraction of tylosin from cattle waste with determination by liquid chromatography mass spectrometry. Kentucky Academy of Sciences Symposium. Paper No. 59.Enrichments of antibiotic resistome following poultry litter soil amendment-(Abstract Only) Agga, G.E., Fanelli, B., Looft, T.P., Cook, K.L., Durso, L.M., Hasan, N.A., Sistani, K.R. 2018. Enrichments of antibiotic resistome following poultry litter soil amendment. Research Workers in Animal Diseases Conference Proceedings. Poster No. 145.Short-term soil characteristic dynamics in beef cattle pastured winter wheat (Triticum aestivum) soybean (Glycine max) double crop production system-(Abstract Only) Netthisinghe, A.M., Galloway, H.O., Agga, G.E., Degraves, F. 2018. Short-term soil characteristic dynamics in beef cattle pastured winter wheat (Triticum aestivum) soybean (Glycine max) double crop production system. American Society of Agronomy Meetings. Poster No. 1033.Effects of in-feed Chlortetracycline prophylaxis in beef cattle on antimicrobial resistance genes-(Peer Reviewed Journal) Miller, E.W., Vikram, A., Agga, G.E., Arthur, T.M., Schmidt, J.W. 2018. Effects of in-feed Chlortetracycline prophylaxis in beef cattle on antimicrobial resistance genes. Foodborne Pathogens and Disease. 15(1):689-697. https://doi.org/10.1089/fpd.2018.2475.Helminthiasis and gram negative enteric bacteria in freshwater fish from selected lakes of Haramaya District, Ethiopia-(Peer Reviewed Journal) Hiko, A., Tasisa, K., Agga, G.E. 2018. Helminthiasis and gram negative enteric bacteria in freshwater fish from selected lakes of Haramaya District, Ethiopia. Journal of fisheries and Aquaculture. 9(2):242. doi: 10.4172/2150-3508.1000242.Abattoir based survey of bovine cystic echinococcosis in selected commercial abattoir in Ethiopia-(Peer Reviewed Journal) Hiko, A., Ibrahim, H., Agga, G.E. 2018. Abattoir based survey of bovine cystic echinococcosis in selected commercial abattoir in Ethiopia. Journal of Veterinary Science and Technology. 9(2):527. doi: 10.4172/2157-7579.1000527.Quantification of tylosin and tylosin antibiotic resistance genes in cattle waste-(Abstract Only) Appala, K., Conte, E., Kasumba, J., Agga, G.E., Loughrin, J.H. 2018. Quantification of tylosin and tylosin antibiotic resistance genes in cattle waste. Meeting Abstract. Paper No. 17, p. 7.Plant extracts mediated syntheses of silver nanoparticles and their effectiveness on agricultural pathogens-(Abstract Only) Lovanh, N.C., Agga, G.E., Oh, B., Lee, S., Gao, H., Cao, Y. 2018. Plant extracts mediated syntheses of silver nanoparticles and their effectiveness on agricultural pathogens. Meeting Abstract. Paper No. 365.Antimicrobial resistance of Staphylococcus aureus isolates from dairy cows and genetic diversity of resistant isolates-(Peer Reviewed Journal) Abdi, R.D., Gillespie, B.E., Vaughn, J., Merrill, C., Headrick, S.I., Ensermu, D.B., D'Souza, D.H., Agga, G.E., Almeida, R.A., Oliver, S.P., Kerro, D.O. 2018. Antimicrobial resistance of Staphylococcus aureus isolates from dairy cows and genetic diversity of resistant isolates. Foodborne Pathogens and Disease. https://doi.org/10.1089/fpd.2017.2362.Quantifying tetracycline resistance genes in swine waste anaerobic digester over a period of 100 days-(Abstract Only) Couch, M., Agga, G.E., Loughrin, J.H., Parekh, R.R., Antle, S.W., Kasumba, J., Couch, B., Conte, E.D. 2018. Quantifying tetracycline resistance genes in swine waste anaerobic digester over a period of 100 days. American Chemical Society Abstracts. Paper No. 276.The global distribution, host range and prevalence of Trypanosoma evansi causing surra: A systematic review and meta-analysis-(Abstract Only) Aregawi, W.G., Buscher, P., Agga, G.E., Abdi, R.D. 2017. The global distribution, host range and prevalence of Trypanosoma evansi causing surra: A systematic review and meta-analysis. Meeting Abstract. Paper No. T1.Impact of "raised without antibiotics" beef cattle production practices on occurrences of antimicrobial resistance-(Peer Reviewed Journal) Vikram, A., Rovira, P., Agga, G.E., Arthur, T.M., Bosilevac, J.M., Wheeler, T.L., Morley, P., Belk, K., Schmidt, J.W. 2017. Impact of "raised without antibiotics" beef cattle production practices on occurrences of antimicrobial resistance. Applied and Environmental Microbiology. 83:e01682-17. https://doi.org/10.1128/AEM.01682-17.Effect of winter cover crop grazing on animal performance and antibiotic resistance during pre-weaning period in beef cattle-(Abstract Only) Agga, G.E., Galloway, H.O., Arthur, T.M., Schmidt, J.W., Netthisinghe, A.M. 2017. Effect of winter cover crop grazing on animal performance and antibiotic resistance during pre-weaning period in beef cattle. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Paper No. 1327.Effect of cessation of beef cattle pasture-feedlot type backgrounding operation on the persistence of antibiotic resistance genes in the environment-(Abstract Only) Agga, G.E., Cook, K.L., Netthisinghe, A.M., Parekh, R.R. 2017. Effect of cessation of beef cattle pasture-feedlot type backgrounding operation on the persistence of antibiotic resistance genes in the environment. Meeting Abstract. p. 97.Rapid detection and classification of Salmonella enterica shedding in feedlot cattle utilizing Roka Bioscience Atlas Salmonella detection assay for the analysis of rectoanal mucosal swabs-(Peer Reviewed Journal) Chaney, W.E, Agga, G.E., Nguyen, S.V., Arthur, T.M., Bosilevac, J.M., Dreyling, E., Rishi, A., Brichta-Harhay, D. 2017. Rapid detection and classification of Salmonella enterica shedding in feedlot cattle utilizing Roka Bioscience Atlas Salmonella detection assay for the analysis of rectoanal mucosal swabs. Journal of Food Protection. 80(10):1760-1767. https://doi.org/10.4315/0362-028X.JFP-17-124.A systematic review and meta-analysis of trypanosome prevalence in tsetse flies-(Peer Reviewed Journal) Abdi, R.D., Agga, G.E., Aregawi, W.G., Bekana, M., Van Leeuwen, T., Delespaux, V., Duchateau, L. 2017. A systematic review and meta-analysis of trypanosome prevalence in tsetse flies. BMC Veterinary Research. 13:100. doi:10.1186/s12917-017-1012-9.Prevalence of Escherichia coli O157:H7 in beef cattle at slaughter and beef carcasses at retail shops in Ethiopia-(Peer Reviewed Journal) Abdissa, R., Haile, W., Fite, A.T., Beyi, A.F., Agga, G.E., Edao, B.M., Tadesse, F., Korsa, M.G., Beyene, T., Beyene, T.J., De Zutter, L., Cox, E., Goddeeris, B.M. 2017. Prevalence of Escherichia coli O157:H7 in beef cattle at slaughter and beef carcasses at retail shops in Ethiopia. BMC Infectious Diseases. 17:277. doi:10.1186/s12879-017-2372-2.Effect of in-feed Chlortetracycline prophylaxis in beef cattle on levels of 10 antimicrobial resistance genes-(Abstract Only) Miller, E.W., Agga, G.E., Vikram, A., Arthur, T.M., Schmidt, J.W. 2017. Effect of in-feed Chlortetracycline prophylaxis in beef cattle on levels of 10 antimicrobial resistance genes. [Abstract]. American Society for Microbiology Meeting. p.43, no.13.Providing context: antimicrobial resistance from multiple environmental sources-(Abstract Only) Arthur, T.M., Agga, G.E., Schmidt, J.W. 2017. Providing context: antimicrobial resistance from multiple environmental sources. [Abstract]. American Society for Microbiology General Meeting. p.32, S4:8.Impact of raised without antibiotics practices on occurrences of antimicrobial resistance-(Abstract Only) Vikram, A., Rovira, P., Miller, E.W., Agga, G.E., Wheeler, T.L., Arthur, T.M., Schmidt, J.W. 2017. Impact of raised without antibiotics practices on occurrences of antimicrobial resistance. [Abstract].  American Society for Microbiology General Meeting. p. 14, S1:5.Effects of in-feed Chlortetracycline Prophylaxis of beef cattle on animal health and antimicrobial-resistant Escherichia coli-(Abstract Only) Agga, G.E., Schmidt, J.W., Arthur, T.M. 2017. Effects of in-feed Chlortetracycline Prophylaxis of beef cattle on animal health and antimicrobial-resistant Escherichia coli. Meeting Abstract. [Abstract]. Beef Industry Safety Summit, February 28-March 2, 2017, Houston, Texas, Available:http://bifsco.org/search.aspx?qal=2017 abstracts.Impact of antimicrobial use during beef production on fecal occurrence of antimicrobial resistance-(Abstract Only) Vikram, A., Rovira, P., Agga, G.E., Arthur, T.M., Bosilevac, J.M., Wheeler, T.L., Morley, P., Belk, K., Schmidt, J.W. 2017. Impact of antimicrobial use during beef production on fecal occurrence of antimicrobial resistance. Meeting Abstract. [Abstract]. Beef Industry Safety Summit, February 28-March 2, 2017, Houston, Texas. Available:http://bifsco.org/search.aspx?qal=2017 abstracts.Evaluation of rectoanal mucosal swab sampling for molecular detection of Enterohemorrhagic Escherichia coli in beef cattle-(Peer Reviewed Journal) Agga, G.E., Arthur, T.M., Hinkley, S., Bosilevac, J.M. 2017. Evaluation of rectoanal mucosal swab sampling for molecular detection of Enterohemorrhagic Escherichia coli in beef cattle. Journal of Food Protection. 80(4):661-667.  doi:10.4315/0362-028X.JFP-16-435.Effects of in-feed chlortetracycline prophylaxis of beef cattle on animal health and antimicrobial-resistant Escherichia coli-(Peer Reviewed Journal) Agga, G.E., Schmidt, J.W., Arthur, T.M. 2016. Effects of in-feed chlortetracycline prophylaxis of beef cattle on animal health and antimicrobial-resistant Escherichia coli. Applied and Environmental Microbiology. 82(24):7197-7204. doi:10.1128/AEM.01928-16.Evaluation of bacteriophage application to cattle in lairage at beef processing plants to reduce Escherichia coli O157:H7 prevalence on hides and carcasses-(Peer Reviewed Journal) Arthur, T.M., Kalchayanand, N., Agga, G.E., Wheeler, T.L., Koohmaraie, M. 2017. Evaluation of bacteriophage application to cattle in lairage at beef processing plants to reduce Escherichia coli O157:H7 prevalence on hides and carcasses. Foodborne Pathogens and Disease. 14(1):17-22. doi:10.1089/fpd.2016.2189.Inflammation and emphysema in cigarette smoke-exposed mice when instilled with poly (I:C) or infected with influenza A or respiratory syncytial viruses-(Peer Reviewed Journal) Mebratu, Y.A., Smith, K.R., Agga, G.E., Tesfaigzi, Y. 2016. Inflammation and emphysema in cigarette smoke-exposed mice when instilled with poly (I:C) or infected with influenza A or respiratory syncytial viruses. Respiratory Research. 17(1):75. doi:10.1186/s12931-016-0392-x.Antimicrobial-resistant fecal bacteria from ceftiofur-treated and nonantimicrobial-treated comingled beef cows at a cow-calf operation-(Peer Reviewed Journal) Agga, G.E., Schmidt, J.W., Arthur, T.M. 2016. Antimicrobial-resistant fecal bacteria from ceftiofur-treated and nonantimicrobial-treated comingled beef cows at a cow-calf operation. Microbial Drug Resistance. 22(7):598-608. doi:10.1089/mdr.2015.0259.Diagnostic accuracy of rectoanal mucosal swab of feedlot cattle for detection and enumeration of Salmonella enterica-(Peer Reviewed Journal) Agga, G.E., Arthur, T.M., Schmidt, J.W., Wang, R., Harhay, D.M. 2016. Diagnostic accuracy of rectoanal mucosal swab of feedlot cattle for detection and enumeration of Salmonella enterica. Journal of Food Protection. 79(4):531-537. doi:10.4315/0362-028X.JFP-15-409.Antimicrobial-resistant bacterial populations and antimicrobial resistance genes obtained from environments impacted by livestock and municipal waste-(Peer Reviewed Journal) Agga, G.E., Arthur, T.M., Durso, L.M., Harhay, D.M., Schmidt, J.W. 2015. Antimicrobial-resistant bacterial populations and antimicrobial resistance genes obtained from environments impacted by livestock and municipal waste. PLoS One. 10(7).Antimicrobial resistance of enteric bacteria among ceftiofur treated and non-antimicrobial treated co-mingled pasture beef cows-(Abstract Only) Agga, G.E., Schmidt, J.W., Arthur, T.M. 2015. Antimicrobial resistance of enteric bacteria among ceftiofur treated and non-antimicrobial treated co-mingled pasture beef cows.[Abstract]. 4th American Society for Microbiology Conference on Antimicrobial Resistance in Zoonotic Bacteria and Foodborne Pathogens. S6:5, p.39.Variations in the fecal occurrences of antimicrobial-resistant bacteria are greater between seasons than between "raised without antibiotics" and "conventional" cattle production systems-(Abstract Only) Schmidt, J.W., Agga, G.E., Bosilevac, J.M., Wheeler, T.L., Arthur, T.M. 2015. Variations in the fecal occurrences of antimicrobial-resistant bacteria are greater between seasons than between "raised without antibiotics" and "conventional" cattle production systems.[Abstract] 4th American Society for Microbiology Conference on Antimicrobial Resistance in Zoonotic Bacteria and Foodborne Pathogens. S7:4,p.102.Effectiveness of an Increased Dose of Bovamine Compared to a Lower Dose to Reduce Salmonella in Fed Cattle-(Abstract Only) Arthur, T.M., Agga, G.E., Harhay, D.M. 2015. Effectiveness of an increased dose of Bovamine compared to a lower dose to reduce Salmonella in fed cattle. [Abstract]. Beef Industry Safety Summit. http://www.bifsco.org/2015researchsessionabstracts.aspx.Occurrence of antimicrobial-resistant Escherichia coli and Salmonella enterica in the beef cattle production and processing continuum-(Peer Reviewed Journal) Schmidt, J.W., Agga, G.E., Bosilevac, J.M., Harhay, D.M., Shackelford, S.D., Wang, R., Wheeler, T.L., Arthur, T.M. 2015. Occurrence of antimicrobial-resistant Escherichia coli and Salmonella enterica in the beef cattle production and processing continuum. Applied and Environmental Microbiology. 81(2):713-725.Antibiotic resistance by source: human-cattle-swine-(Abstract Only) Arthur, T.M., Agga, G.E., Schmidt, J.W. 2014. Antibiotic resistance by source: human-cattle-swine. [Abstract] Beef Industry Safety Summit. Available:  www.bifsco.org/attendees.aspx.
 ProjectsDeveloping Agronomically and Environmentally Beneficial Management Practices to Increase the Sustainability and Safety of Animal Manure UtilizationIn-House Appropriated (D)Accession Number:441096Institutional Biological Safety Committee (IBC) Agreement - Western Kentucky UniversityNon-Funded Cooperative Agreement (N)Accession Number:441628Biochar Bedding Amendment and Anaerobic Digestion Mitigate Foodborne Pathogens, Antimicrobial Resistance and Ammonia in Poultry ProductionNon-Funded Cooperative Agreement (N)Accession Number:445707
 ARS News ArticlesNo news articles listed for this employee.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov