A5089465355- Salmonella and Campylobacter epidemiology
- Ruminant Nutrition and Digestive Physiology
- Animal Nutrition and Physiology
- Listeria monocytogenes in Food Safety
- Escherichia coli research studies
- Viral gastroenteritis research and epidemiology
- Probiotics and Fermented Foods
- Pharmaceutical and Antibiotic Environmental Impacts
- Fecal contamination and water quality
- Chemical Analysis and Environmental Impact
- Reproductive Physiology in Livestock
- Meat and Animal Product Quality
- Gut microbiota and health
- Clostridium difficile and Clostridium perfringens research
- Veterinary medicine and infectious diseases
- Genetic and phenotypic traits in livestock
- Water Treatment and Disinfection
- Vibrio bacteria research studies
- Animal Behavior and Welfare Studies
- Aquaculture disease management and microbiota
- Antibiotic Resistance in Bacteria
- Bacteriophages and microbial interactions
- Plant and fungal interactions
- Essential Oils and Antimicrobial Activity
- Turfgrass Adaptation and Management
United States Department of Agriculture
2015-2024
Agricultural Research Service
2015-2024
Southern Plains Agricultural Research Center
2015-2024
Texas College
2022
Olivia Newton-John Cancer Wellness & Research Centre
2022
ORCID
2020
University of Milano-Bicocca
2020
University of Belgrade
2011
University of California, Santa Cruz
2011
North Dakota State University
2005-2008
Dietary components and changes cause shifts in the gastrointestinal microbial ecology that can play a role animal health productivity. However, most information about populations gut of livestock species has not been quantitative. In present study, we utilized new molecular method, bacterial tag-encoded FLX amplicon pyrosequencing (bTEFAP) perform diversity analyses populations. cattle (n = 6) were fed basal feedlot diet subsequently randomly assigned to 1 3 diets 2 cows per diet). each...
The crop is a known source of Salmonella and Campylobacter contamination. We evaluated the use selected organic acids (0.5% acetic, lactic, or formic) in drinking water during simulated 8-h pretransport feed withdrawal (FW). typhimurium was recovered from 53/100 control crops 45/100 acetic acid-treated broilers. However, treatment with lactic acid (31/100) formic (28/76) caused significant (P < 0.05) reduction incidence. Reductions incidence were also associated reduced numbers S. (e.g.,...
Escherichia coli O157:H7 can live undetected in the gut of food animals and be spread to humans directly indirectly. Bacteriophages are viruses that prey on bacteria, offering a natural, nonantibiotic method reduce pathogens from supply. Here we show cocktail phages isolated commercial cattle feces reduced E. populations experimentally inoculated sheep. A was used order prevent development resistance phages. In our first vivo study found sheep (p < 0.05) by 24 hours after phage treatment....
Research was conducted to determine the effects of level supplementation with quebracho condensed tannins (CT) on in vitro ruminal fluid gas production, vivo protein fractions, bloat dynamics, and ADG steers grazing winter wheat. Two experiments were 1) enumerate effect from fed CT (0, 1, 2% CT/kg DMI) methane production minced fresh wheat forage; 2) quantify influence characteristics, biofilm complexes, potential, pasture. Eighteen ruminally cannulated (386 +/- 36 kg BW) randomly allocated...
Epidemiologic studies commonly use mercury (Hg) level in hair as a valid proxy to estimate human exposure methylmercury (MeHg) through fish consumption. This study presents the results yielded by complete data set on consumption habits, Hg levels edible resources, and corresponding accumulation hair, gathered three distinct communities of eastern Canada. For one these communities, average concentration was 14 times less than expected value based calculated daily oral current knowledge MeHg...
Laying hens are typically induced to molt begin a new egg-laying cycle by withdrawing feed for up 12 14 d. Fasted more susceptible colonization and tissue invasion Salmonella enterica serovar Enteritidis. Much of this increased incidence in fasted is thought be due changes the native intestinal microflora. An alternative withdrawal involves feeding alfalfa meal crumble hens, which indigestible poultry but provides fermentable substrate microbial population reduces compared with withdrawal....
Linalool is a natural plant-product used in perfumes, cosmetics, and flavoring agents. has proven antimicrobial insect-repellant properties, which indicate it might be useful for control of enteropathogens or insect pests poultry production. However, there are no published reports that linalool may safely administered to tolerated by chickens. was added the diets day-of-hatch chicks, they were fed linalool-supplemented 3 wk. We studied effects on serum chemistry, gross pathology, feed...
Cattle are a natural reservoir of the food-borne pathogen Escherichia coli O157:H7. Therefore, strategies that reduce E. O157:H7 prior to slaughter will human exposures this virulent pathogen. When bacteria can anaerobically respire on nitrate (e.g., coli) exposed chlorate, they die because intracellular enzyme reductase converts nitrite, but also co-metabolically reduces chlorate cytotoxic chlorite. Because is bactericidal only against reductase-positive bacteria, it has been suggested...
ABSTRACT By using molecular methods for the identification and quantification of methanogenic archaea in adult chicken ceca, 16S rRNA genes 11 different phylotypes, 10 which were 99% similar to Methanobrevibacter woesei , found. Methanogen populations, as assessed by cultivation, copy number between 6.38 8.23 cells/g (wet weight) 5.50 7.19 log /g weight), respectively.
Seasonal shedding of Escherichia coli O157:H7 in ruminants is well documented; however, viable explanations for this phenomenon are lacking. The fecal prevalence E. the highest summer months, decreasing to low or undetectable levels winter. To determine if day length correlated seasonal shedding, nine reports cattle were selected similarity sampling technique, culture methodology, type, and ability approximate month location, representing three regions North America (southern Canada,...
Salmonella is a foodborne pathogenic bacterium that causes human illnesses and morbidity mortality in swine. Bacteriophages are viruses prey on bacteria naturally found many microbial environments, including the gut of food animals, have been suggested as potential intervention strategy to reduce levels live animal. The present study was designed determine if anti-Salmonella phages isolated from feces commercial finishing swine could gastrointestinal populations pathogen Typhimurium...