A5073772769- Animal Nutrition and Physiology
- Viral gastroenteritis research and epidemiology
- Animal Virus Infections Studies
- Animal Disease Management and Epidemiology
- Meat and Animal Product Quality
- Virus-based gene therapy research
- Animal Behavior and Welfare Studies
- Salmonella and Campylobacter epidemiology
- Listeria monocytogenes in Food Safety
- Ruminant Nutrition and Digestive Physiology
- Vector-Borne Animal Diseases
- Food Safety and Hygiene
- Agriculture Sustainability and Environmental Impact
- Phytase and its Applications
- Viral Infections and Immunology Research
- Protein Hydrolysis and Bioactive Peptides
- Effects of Environmental Stressors on Livestock
- Pesticide Residue Analysis and Safety
- Rabbits: Nutrition, Reproduction, Health
- Genetic and phenotypic traits in livestock
- Food and Agricultural Sciences
- Food composition and properties
- Veterinary medicine and infectious diseases
- Biopolymer Synthesis and Applications
- Pharmaceutical and Antibiotic Environmental Impacts
Kansas State University
2015-2024
Arkansas Agricultural Experiment Station
2014-2023
Nuestras Raices
2023
Northumbria University
2023
University of South Dakota
2022
Feed Control (Norway)
2021
Fort Lewis College
2020
Center for Grain and Animal Health Research
2018
Murdoch University
2018
Vale (Canada)
2016
The goal of this study was to evaluate survival important viral pathogens livestock in animal feed ingredients imported daily into the United States under simulated transboundary conditions. Eleven viruses were selected based on global significance and impact industry, including Foot Mouth Disease Virus (FMDV), Classical Swine Fever (CSFV), African (ASFV), Influenza A (IAV-S), Pseudorabies virus (PRV), Nipah (NiV), Porcine Reproductive Respiratory Syndrome (PRRSV), Vesicular (SVDV),...
African swine fever virus (ASFV) is a contagious, rapidly spreading, transboundary animal disease and major threat to pork production globally. Although plant-based feed has been identified as potential route for introduction onto farms, little known about the risks ASFV transmission in feed. We aimed determine minimum median infectious doses of Georgia 2007 strain through oral exposure during natural drinking feeding behaviors. The dose liquid was 100 50% tissue culture (TCID50), compared...
Abstract An experiment was conducted to evaluate the effect of dietary medium-chain fatty acid (MCFA) addition on nursery pig growth performance, fecal microbial composition, and mitigation porcine epidemic diarrhea virus (PEDV) following storage. A total 360 pigs (DNA 400 × 200, Columbus, NE; initially 6.7 ± 0.07 kg) were randomized pens (5 per pen) day weaning (approximately 20 d age), allowed a 6-d acclimation, blocked by BW, treatment (9 treatment). All MCFA (Sigma–Aldrich, St. Louis,...
This study describes a model developed to evaluate the transboundary risk of PEDV-contaminated swine feed ingredients and effect two mitigation strategies during simulated transport event from China US. Ingredients imported USA China, including organic & conventional soybeans meal, lysine hydrochloride, D-L methionine, tryptophan, Vitamins A, D E, choline, carriers (rice hulls, corn cobs) grade tetracycline, were inoculated with PEDV. Control ingredients, treatments (ingredients plus liquid...
The quantification of total starch content (TS) or degree gelatinization (DG) in animal feed is always challenging because the potential interference from other ingredients. In this study, differences TS DG measurement pelleted swine due to variations analytical methodology were quantified. Pelleted was used create 6 different diets manufactured with various processing conditions a 2 × 3 factorial design (2 conditioning temperatures, 77 88°C, and retention times, 15, 30, 60 s). Samples at...
In 2 experiments, 602 pigs were used to evaluate the effects of fish meal, fermented soybean or dried porcine solubles on phase nursery pig performance. Exp. 1, (n = 252; PIC TR4 x 1050; 6.8 kg initial BW and 7 d after weaning) fed: 1) a control diet containing no specialty protein sources with 2) 5% 3) 3.5% solubles, 4) 6.0% 5) combination 1.75% meal 6) 3.0% 2.5% meal. There replications 6 per pen. Experimental diets fed for 14 d, then all common without d. From 0 14, alone had improved (P...
New protein ingredients are used to support pet food market growth and the development of new products while maintaining animal dietary needs. However, novel sources (e.g., spray-dried chicken, (or) rice, pea, potato concentrates) have limited data available regarding their quality. The objective this study was evaluate in industry by laboratory analysis a chick assay as model. Following for proximate amino acid composition, chicks (six birds per pen with four pens treatment) were fed...
In 2 experiments, 530 pigs were used to evaluate the effects of adding commercial enzymes diets containing dried distillers grains with solubles (DDGS) on pig growth performance. first experiment, 180 (9.0 kg initial BW) fed a corn-soybean meal-based control diet, diet 30% corn DDGS, or DDGS 0.05% enzyme A, B, C. There 6 per pen and pens treatment. Overall (d 0 27), neither nor addition increased ADG G:F. Pigs B had decreased (P < 0.05) as result tendency <or= 0.10) for ADFI compared without...
OBJECTIVE To determine the minimum infectious dose of porcine epidemic diarrhea virus (PEDV) in virus-inoculated feed. ANIMALS 30 crossbred 10-day-old pigs. PROCEDURES Tissue culture PEDV was diluted to form 8 serial 10-fold dilutions. An aliquot stock (5.6 × 10(5) TCID50/mL) and each dilution were mixed into 4.5-kg batches feed create 9 PEDV-inoculated doses; 1 virus-negative medium also created. Pigs challenge exposed via oral administration feed, fecal swab specimens collected. All pigs...
Porcine Epidemic Diarrhea Virus (PEDV) was the first virus of wide scale concern to be linked possible transmission by livestock feed or ingredients. Measures exclude pathogens, prevent cross-contamination, and actively reduce pathogenic load ingredients are being developed. However, research thus far has focused on role chemicals thermal treatment RNA in actual feedstuffs, not addressed potential residual contamination within manufacturing facility that may lead continuous finished feeds....
Feed has been identified as a vector of transmission for porcine epidemic diarrhea virus (PEDV). The objective this study was to determine if feed batch sequencing methods could minimize PEDV cross-contamination. Porcine virus-free swine manufactured represent the negative control. A 50 kg mixed in pilot scale mill 5 min, sampled, then discharged 10 min into bucket elevator and sampled again upon exit. Next, pathogenic isolate used inoculate 49.5 PEDV-free form positive control mixed,...
Transmission of biological hazards capable causing disease in livestock can occur through a wide variety direct and indirect routes. In swine production, there are large number possible routes exposure pathogen into susceptible population. African fever virus (ASFV) has been significant challenge for Southeast Asia since first detected China 2018 spread many countries within the region. order to understand potential transmission pathways an ASFV endemic region, diagnostic investigation was...
This experiment aimed to evaluate commercially available disinfectants and their application methods against porcine epidemic diarrhea virus (PEDV) reproductive respiratory syndrome (PRRSV) on truck cab surfaces. Plastic, fabric, rubber surfaces inoculated with PEDV or PRRSV were placed in a full-scale then treated one of eight randomly assigned disinfectant treatments. After application, environmentally sampled cotton gauze tested for using qPCR duplex analysis. There was × surface...
In 2 experiments, a total of 184 pigs (PIC, initial BW 10.3 and 9.7 kg for Exp. 1 2, respectively) were used to develop an available P (aP) release curve commercially Escherichia coli-derived phytases. both fed corn-soybean meal basal diet (0.06% aP) diets with added inorganic (iP) from monocalcium phosphate (Exp. 1: 0.075 0.15% aP; 2: 0.07 0.14% standard curve. 1, 100, 175, 250, or 500 phytase units (FTU)/kg OptiPhos 2000 200, 350, 500, 1,000 FTU/kg Phyzyme XP the diet. 750, 2000; 1,000,...
Abstract Porcine epidemic diarrhea virus (PEDV) is a heat-sensitive that has devastated the U.S. swine industry. Because of its heat sensitivity, we hypothesized steam conditioner and pellet mill mimicking traditional commercial thermal processing may mitigate PEDV infectivity. Pelleting, common feed method, includes use shear forces, resulting in increased temperature processed feed. Two experiments were designed to determine if different retention times temperatures would impact quantity...
New regulatory and consumer demands highlight the importance of animal feed as a part our national food safety system. Porcine epidemic diarrhea virus (PEDV) is first viral pathogen confirmed to be widely transmissible in food. Because potential for contamination not well characterized, objectives this study were 1) observe magnitude an manufacturing facility, 2) investigate proposed method, sequencing, decrease decontamination on food-contact surfaces. A U.S. virulent PEDV isolate was used...
Various strategies have been proposed to mitigate potential risk of porcine epidemic diarrhea virus (PEDV) transmission via feed and ingredients. Wet disinfection has found be the most effective decontamination mill surfaces; however, this is not practical on a commercial production scale. Another mitigation strategy would using chemically treated rice hulls flushed through manufacturing equipment. Therefore, objective study was determine effects medium-chain fatty acids (MCFA) or...
Abstract Salmonella is a pathogen of public health concern. Each year, infections cost to the food industry approximately $2.3 billion and 33% reported cases are associated with beef, poultry, or pork. Pathogen presence in feed mills can represent one many potential routes for entry transmission into production chain. Nevertheless, little known about incidence association these types environments. The objective this study was investigate different across United States. Eleven facilities were...
Development of a feed mill biosecurity plan can minimize risk introduction biologic hazards and limit potential economic losses from animal or human pathogens such as Salmonella porcine epidemic diarrhea virus. A should be detailed contain hazard controls at each step the manufacturing process. Biologic cause illness injury in humans animals. These introduced through number means, including ingredients, equipment, people, so must aim to prevent reduce their prevalence. The Food Safety...
The overall objective of this study was to compare the efficacy medium-chain fatty acids (MCFA) other common fat sources minimize risk porcine epidemic diarrhea virus (PEDV) cross-contamination in a pig bioassay. Treatments were feed with mitigants inoculated PEDV after application and were: 1) positive control no chemical treatment; 2) 0.325% commercially available formaldehyde-based product; 3) 1% blend 1:1:1 caproic (C6), caprylic (C8), capric (C10) applied an aerosolizing nozzle; 4)...
The unprecedented increase in litter size over the last decade has led to a perceived number of fallback pigs (Sus scrofa). However, there is little peer-reviewed data available regarding biological differences between and their normal cohorts. Therefore, objective this experiment was identify biology physiology, thus growth metabolism, with varying weaning weights (WW) postweaning performance. To accomplish objective, total 120 barrows (PIC C22/C29 × 337) were used comparative slaughter...
Two key feed processing parameters, conditioning temperature and time, were altered to determine their effects on concentration of gelatinized starch vitamin retention in a pelleted finishing swine diet. Diet formulation (corn–soybean meal based with 30% distillers dried grains solubles) was held constant. Treatments arranged 2 × 3 factorial design plus control temperatures (77 vs. 88°C) conditioner times (15, 30, 60 s). In addition, mash diet not subjected served as for total 7 treatments....