bluuebunny/crossref_metadata_2025_split huggingface dataset:
PSVIII-10 An Experimental Weight Management Food Supports Metabolism and Allows for Less Calorie Restriction for Weight Loss in Both Dogs and Cats: a Retrospective Analysis
Authors: Motsinger Laura A , Jewell Dennis E , Hancock Leslie B , Morris Elizabeth M , Jackson Matthew I 
Published: November 2023

Abstract
Obesity is a growing health concern in dogs and cats. Furthermore, decreased maintenance energy requirements after body weight loss has been linked to rebound weight gain in dogs and cats. Previous research completed by our group has demonstrated that feeding a targeted weight management food to dogs and cats during both the maintenance and weight loss phases results in body weight loss and improved body condition despite increases in caloric intake during the weight maintenance phase. As such, the objective of this study was to investigate the effects of feeding two different weight management foods on weight loss on a per Kcal basis in dogs and cats. Obese adult dogs (n = 39) and cats (n = 38) were subjected to a 36-d maintenance phase and then a 112-d weight loss phase in which they were fed either a standard weight management food (control) or a weight management food that included a blend of specific fibers, immuno-modulators, antioxidant and anti-inflammatory botanicals, and lipotropes (test). During the maintenance phase, pets were fed an adjusted amount of calories needed to maintain weight. Diets were adjusted throughout the weight loss phase to achieve a 1 to 2% reduction in BW per week. Intake was collected daily, and body weight (BW) was recorded every 7 d. To calculate the calorie deficit needed to achieve one unit of weight loss, metabolizable energy estimated from modified Atwater equations and food intake were used and the delta of energy intake between maintenance and body weight loss phases was divided by the delta of the BW change during weight loss. Delta energy/delta weight was reduced (P = 0.020) in cats fed the test food when compared with pets fed the control food such that cats fed the weight loss food required a deficit of 56.5 kcal/d and cats fed the control food required a deficit of 82.8 kcal/d to achieve 1 kg of BW loss. Similarly, delta energy/delta weight was reduced (P = 0.045) in dogs fed the test food when compared with dogs fed the control food such that dogs fed the weight loss food required a deficit of 57.2 kcal/d and dogs fed the control food required a deficit of 95.0 kcal/d to achieve 1 kg of BW loss. Overall, feeding the targeted weight management test food resulted in body weight loss with less of a calorie deficit when compared with feeding the control food, suggesting that the metabolism of dogs and cats is altered by the test food. These data suggest that feeding a food that requires less calorie deficit to lose body weight allows pets to consume more food, contributing to improved satiety, without negating their weight loss process. Future research may support a benefit against rebound weight gain.
PSVIII-12 Hexanal, as Identified Through Flash Gas Chromatography Electronic Nose, Strongly Correlates with Pv in Rendered Chicken Meal Samples, Although Additional Compounds Influence Aromatic Palatability
Authors: Mccracken Fiona , Fowler Jason , Timlin Claire , Towa Lili , Dickerson Sarah M , Coon Craig N 
Published: November 2023

Abstract
Samples of rendered chicken meal (CM) and chicken by-product meal (CB) were obtained from a commercial plant with samples representing various storage time points and a range of peroxide values from &lt; 10 (1), 20-50 (2), 50-100 (3), 100-200 (4). Samples were utilized in a novel aromatic palatability trial with 20 working Labrador Retrievers (n = 10 males and n = 10 females). Aggregated interaction time showed the most pronounced difference between the lowest PV sample and the highest PV for both CB and CM (P &lt; 0.0001, 0.001). Both CB1 and CM1 were significantly different from all other samples (P = 0.05). Samples were also sent to a third party for HERACLES Neo flash gas chromatography electronic nose analysis (e-nose). Analysis of e-nose chromatograms showed good discrimination between samples (DI = 97) with the largest spatial differences between the low and high PV samples. Chromatogram peaks were tentatively identified according to their Kovats index and the AlphaChemBase database. Component 1 (X-axis) accounted for 99.4% of the difference while component 2 (Y-axis) showed 0.54% of the difference. The strongest odor, as determined by the highest area peak was hexanal which produces a fatty and fishy smell. When evaluated in a bivariate model hexanal vs PV was well correlated on a 2P curve (R2= 0.986, P &lt; 0.0001). However, hexanal was less correlated with aromatic palatability (R2 = 0.616. P = 0.09). Therefore, a primary least squares model was created to better display the relationship between palatability and oxidation. Utilizing two factors, the PLSR model explained 72% of the variation in the e-nose peak area data (X) and 90% of the variation in the PV*palatability (Y). Of the 61 aromatic compounds identified, the model identified 45 compounds with a VIP over 0.8. Both PV and palatability were well-fitted by the model as indicated by their position between the outer two ellipses (R2 = 75% to 100%). In the model, Hexanal had a VIP of 1.1 suggesting it was an important component, although other compounds had significantly better VIP scores and are likely to better predict palatability. Therefore, these data show aromatic hexanal is an accurate predictor of the oxidation of a product, although it may not provide the full picture regarding palatability.
PSVIII-23 Volatile Flavor Profile of Wet Pet Food Influences Canine and Feline Palatability Performance
Authors: Beer Lesleigh , Hernandez Sebastian , Legako Jerrad F , White Brittany L 
Published: November 2023

Abstract
Volatile flavor compounds as they relate to canine and feline palatability of wet pet food has yet to be established in the industry. The objectives of this study were to determine volatile compounds in wet pet food in diets that performed differently in palatability feeding studies. Five pairs of wet pet food diets (n = 3 feline; n = 2 canine) were obtained from separate manufacturing facilities and were selected based on palatability preference (P &lt; 0.05, n = 3) or palatability parity (P &gt; 0.05, n = 2). Volatile compounds were extracted using solid phase microextraction and analyzed via gas chromatography-mass spectrometry. Diets were analyzed in triplicate. Significance was determined at P &lt; 0.05. Alcohols, aldehydes, and hydrocarbons comprised the main groups, and 58 total volatile compounds were identified. 1-octen-3-ol, an artifact of lipid oxidation, was found in all diets and was consistently greater (P &lt; 0.05) in diets that were less preferred in palatability testing. A feline diet less preferred in palatability performance had increased concentrations (P &lt; 0.05) of volatile compounds such as furfuryl alcohol and 2-pentyl furan, derived from both the Maillard reaction and thermal lipid degradation pathways, respectively. Conversely, a canine diet with palatability preference was greater (P &lt; 0.05) in lipid degradation products such as 2-pentyl furan, 1-hexanol, and p-xylene. Overall, one set of diets had an increased (P &lt; 0.05) production of Maillard reaction products including Strecker aldehydes, furans, and pyrazines whereas lipid degradation products were predominant in the second set. In conclusion, these data generally showed a significant difference (P &lt; 0.05) in Maillard reaction and lipid degradation products in each pair of diets. Future studies are warranted to better understand how the volatile compound profile impacts palatability for canines and felines. Taken together, the results of this study suggest that volatile compound profile analysis could be utilized to further elucidate influencers of pet food palatability preferences.
PSIX-26 Reproductive Management Practices for Beef Cow-Calf Producers in Virginia: a Survey
Authors: Vidlund Trinity , Craun Hannah , Mercadante Vitor R G R G 
Published: November 2023

Abstract
The Virginia Master Cattlemen (VMC) is an extension program with the goal of educating beef cattle producers on best practices and management. Reproduction management strategies are essential in ensuring beef cow-calf producers achieve one healthy calf, per cow, every year. Every year, during the VMC, a survey on reproductive management practices and adoption of technologies is performed as a representation of current practices of beef cow-calf producers. Over three years (2021-2023), we obtained data from a total of 276 producers in VA. Out of all participants, 71.74% indicated that they had a defined breeding season. Of those, 33.17% had a breeding season of 70 days or less. Furthermore, 47.81% of producers had both a Fall and Spring breeding season, while 24.12% and 28.07% of participants designated their breeding seasons as either Fall or Spring, respectively. Moreover, 62.28% of participants reported that 40% or more of their cows calve within the first 21 days of the calving season. The bull-to-cow ratio was assessed on operations electing to use natural service, with 71.27% of producers having a minimum of a 1:25 bull-to-cow ratio. A total of 66.54% of the participants reported regularly measuring body condition score of their cows. Over the three years, the most adopted reproductive practice on farms was pregnancy diagnosis, with 31.13% of producers indicating they perform pregnancy diagnosis on their herds every year. The second most utilized practice is the bull breeding soundness exam, with 26.11%. Artificial insemination is continuously gaining popularity, with 19.44% of producers reporting they artificially inseminated their cattle over the past three years. Additionally, 15% of producers reported estrus synchronization of their cattle. However, embryo transfer and sexed semen are the two reproductive practices that were least adopted by producers, with 3.72% and 4.60%, respectively. Overall, compared with the 2017 USDA NAHMS cow-calf report, Virginia producers are more advanced with their reproductive management practices compared with the average cattlemen in the United States.
PSIX-24 Social Trust in a Small Dairy Farmer Organization in Southeast Brazil
Authors: dos Reis Beatriz Q Queiroz , Benardes Elaine , Sarturi Jhones O , Rodrigues Barbara , Mclain DeAnja , Goulais Marie , Pessoni Juliana 
Published: November 2023

Abstract
The objective of this study was to analyze the social trust in a group of dairy farmers in the State of São Paulo, Brazil. The related Association of Dairy Producers (ADP) is like most small rural organizations present in Brazil that emerged to meet the public policies. Current assessment had three stages: a) identifying producers; b) applying the surveys; and c) data analyses. The producer association was unable to provide some basic information about its members (such as phone number), which signals a lack of trust. To identify the ADP members, it was necessary to visit the milking parlor expansion tanks to find such contact. Another situation reinforced the first impression regarding the lack of social trust: an ADP member did not authorize the access to to the research conduct the surveys for the members that used the expansion tank installed on his land. The surveys were then conducted at four out of five locations where expansion tanks were installed. Among the ADP members surveyed, 68.75% answered the survey. Approximately 82% of respondents indicated caution when dealing people in general (inside or outside the ADP). Although there was an indication of lack of social trust, 54.4% of producers trusted entirely the ADP; 22.7% partially trusted; 13.6% were indifferent; 4.5% had low trust, and 4.5% did not trust. When voluntary participation in decision in the association activities was questioned, 68.2% of the surveyed members answered “actively participate”, 31.8% “participate without actions,” and none of the surveyed members admitted no participation. Approximately 82% of the surveyed members had a positive perception of the association, while 18% believed it was not properly managed and inferred no longer assist with it in the future. A greater participation in the association activities may have not being observed due to the fact that current association was transitioning into a cooperative business model at the time of current data collection. For 18.25% of the members, the two main causes of the distrust in the recently created agricultural cooperative was related to: a) the requirement to obligatory become a member; and b) the delay in the construction completion of the dairy processing plant. The results suggest that producers show signs of general social distrust, indicated by concerns regarding the advantages, disadvantages, or even the risks associated with becoming members of the agricultural cooperative. Nonetheless, the vast majority of producer members trusted in the association. Further assessment is warranted to investigate if the source of general social mistrust observed erupted from internal (local community) or external (city, state, and federal public policies) venues of the society.
PSVII-14 Reduction in Heart Rate Variability Parameters in Horses Treated with a Mixture of Lavender and Eucalyptus Essential Oil
Authors: Secrest Maura , Wendorf Kathryn , Ferguson Clarence Edward 
Published: November 2023

Abstract
Routine medical examinations can produce stress which can negatively impact the health and well-being of horses. Heart rate variability (HRV) is a non-invasive and inexpensive method to measure the balance between sympathetic and parasympathetic nervous system activity, which can help identify stress in horses. This study examined the effect of a combination of lavender and eucalyptus essential oil on stress responses in horses undergoing a routine medical exam. After a five-minute stall rest (baseline reading) data were collected in three, five-minute intervals (walk to and enter stock, medical exam, and recovery in stall). This study utilized a switch-back design where each horse (n = 10) received both treatments on different dates. The treatment groups received lavender (20%) and eucalyptus essential oil (5%) dissolved in petroleum jelly and virgin sunflower oil applied to inner nostrils. The control treatment consisted of only petroleum jelly and virgin sunflower oil applied to inner nostrils. The root mean square of the successive differences of heartbeats (RMSSD) was significantly reduced (P &lt; 0.05) when horses were treated with essential oils while walking to stocks (51.7 ± 3.7), during the medical exam (50.5 ± 4.9), and during the recovery period (64.1.9 ± 5.7) compared with control treatment, to stocks (36.1 ± 4.4), the medical exam (39.0 .± 4.5), and during the recovery period (49.7 ± 5.5). The measured SD1 (parasympathetic) was significantly greater (P &lt; 0.008) at walk to stocks in horses treated with essential oils (37.2 ± 1.9) compared with control treated (30.3 ± 3.1). The measured SD2 (sympathetic) was significantly less (P &lt; 0.008) at walk to stocks in horses treated with essential oils (62.8 ± 1.9) compared with control treated (69.7 ± 6.8). The ratio of SD1/SD2 was significantly less (P &lt; 0.008) at walk to stocks in horses treated with essential oils (1.7 ± 0.17) compared with control treated (2.4 ± 0.26). The high frequency percent (HF%) was also greater (P &lt; 0.04) at walk to stocks in horses treated with essential oils (39.6 ± 4.9) compared with control treated (26.0 ± 4.1). The standard deviation of RR Interval (SDNN) values were increased (P &lt; 0.03) in horses treated with essential oils during walking to stalks (50.8 ± 1.9), the medical exam (56.7 ± 5.0), and the recovery period (72.4 ± 12.9) compared with the control treatment, to stalks (44.5 ± 5.2), medical exam (44.0 ± 4.5), and during the recovery period (54.6 ± 6.2). The results of this study indicate that lavender and eucalyptus oil could be an effective means of reducing short-term stress in horses. The findings of this study can help develop more effective and humane management strategies for horses.
PSX-15 Precision Beef Dry Matter Intake Estimation on Extensive Rangelands
Authors: Parsons Ira L , Menendez Hector M , Brennan Jameson R , Ehlert Krista 
Published: November 2023

Abstract
Predicting dry matter intake (DMI) for beef cattle on extensive rangelands presents a significant challenge to determining stocking rates. Traditionally, DMI is estimated by taking full body weight (BW) multiplied by a percentage selected based on animal class, production phase, and forage quality, which introduces tremendous levels of accumulated error at the herd level. Animal Unit Months (AUMs) are utilized to simplify the determination of stocking rate (animal units per area per a specific period of time) of pastures. This challenge represents a tremendous opportunity to leverage precision technology to account for individual animal variation in BW and growth, with subsequent impacts on herd-level decisions. Therefore, the objective of this study was to utilize precision livestock technology (PLT) collected data to build a precision system model (PSM) to evaluate the differences in predicted DMI using either initial BW, expected mid-season BW, or PLT measured BW. The PSM model was built utilizing BW data measured using SmartScale (C-Lock Inc.) for 60 days during the summers of 2021 and 2022 on Angus yearling steers (average initial BW 393.71 ± 39.01 and 315.23 ± 53.91 kg, n = 130 and 124, for year 2021 and 2022, respectively) on native pastures at the South Dakota State University Cottonwood Field Station. The PSM evaluated total forage consumption and deterministically estimated hectares of pasture required to meet the herd forage demands relative to available biomass (kg/ha). the PSM estimated 4.49% and 6.94% more DMI at the herd level compared with using initial BW for years 2021 and 22, respectively, and 1.64% less DMI than mid-season BW in 2021. This resulted in an additional 14.03 and 17.95 ha required for years 2021 and 22, respectively, according to PSM estimates compared with initial BW, while animals were understocked by 5 and 0.3 ha for 2021 and 2022, respectively, using mid-season BW. Individuals expressed a divergent growth rate, resulting in greater misalignment between static and PSM predicted DMI as the grazing period progressed (Menendez et al., 2023), indicating greater opportunities for targeted grazing management in long grazing periods. Therefore, applying precision data provides more precise DMI estimates and demonstrates the advantages and disadvantages of herd-level estimates. The use of PSM helps to identify high-leverage precision tools to minimize a performance gap like overgrazing extensive rangeland systems and demonstrates the critical need to develop robust data-collection and processing steps to leverage continuously collected PLT data.
PSX-20 Effects of a Phytogenic Supplement Pre- and Post-Calving on Colostrum Yield and Composition, and Cow-Calf Performance
Authors: Jardon Grace H , Kovarna Madison , Moening Katherine , Brandner Andrea , Werner Hannah , Heldt Jeff S , Menezes Ana Clara Baiao 
Published: November 2023

Abstract
Objectives were to determine the effects of a phytogenic supplement (a blend of turmeric, capsicum, and pepper extracts), fed pre- and post-calving, on colostrum yield and quality, and cow-calf performance. Twenty-three (BW = 532.08 ± 9.13 kg; age 36 mo) crossbred Angus cows were randomly assigned to 3 treatment groups: 1) Not supplemented (CON, n = 7); 2) supplemented with 250 mg· animal-1· d-1 (PHYT250, n = 8); or 3) supplemented with 500 mg· animal-1· d-1 (n = 8) of the phytogenic supplement. Cows were individually fed the supplement from 30 days (± 5 days) pre-calving (d –30) to 60 days (d 60) post-calving. Total colostrum from the left-rear quarter was collected on d 0 (pre-suckling), and d 1, d 2, and d 3 post-calving. Colostrum weight and volume were recorded, and samples (50 mL) were collected and analyzed for percentages of fat, protein, milk urea nitrogen (MUN), other solids, and lactose. Cow BW was obtained on a biweekly basis from d -30 to d 60. Calf BW was measured on d 0, d 30, d 42, and d 60. Data were analyzed as repeated measures using the MIXED procedure of SAS with treatment, day, and their interaction as fixed effects and animal as a random effect. No treatment by day interaction (P = 0.42) nor main effects of treatment and day (P ≥ 0.25) were observed for colostrum volume. Fat concentration tended to be greater (P = 0.07) for PHYT250 and PHYT500 compared with CON. A treatment × day interaction (P = 0.05) was observed for MUN, with PHYT250 being greater than PHYT500 but similar to CON on d1. There was no difference between treatments for all other days for MUN. No treatment by day interactions (P ≥ 0.15) or main effects of treatment (P ≥ 0.16) were observed for other components. However, there were main effects of day (P ≤ 0.02) with protein being greater on d 0 compared with all other days, and other solids and lactose being greater on day 3 compared with all other days. Main effects of day were observed for cow and calf BW (P ≤ 0.01). Cows were heavier on d 28 and d 42, while calves were heavier on d 56 compared with all other days. Even though we did not observe differences in performance, our results suggest that feeding a phytogenic supplement 30 d pre-calving up to 60 d post-calving may impact fat and MUN in colostrum. To complement these data, we are currently evaluating concentrations of immunoglobulins (IgA, IgG, and IgM) in colostrum and calf blood. Further, milk collections will be performed in specific time-points up to weaning, to evaluate any possible effects of our treatments in milk yield and composition.