A5018465076- Animal Nutrition and Physiology
- Salmonella and Campylobacter epidemiology
- Viral gastroenteritis research and epidemiology
- Livestock and Poultry Management
- Listeria monocytogenes in Food Safety
- Insect symbiosis and bacterial influences
- Genetics, Aging, and Longevity in Model Organisms
- Amyotrophic Lateral Sclerosis Research
- Probiotics and Fermented Foods
- Antimicrobial agents and applications
- Fecal contamination and water quality
- Animal health and immunology
- Mycotoxins in Agriculture and Food
- Plant and animal studies
- Animal Behavior and Reproduction
- Microbial Metabolites in Food Biotechnology
- Microbial Inactivation Methods
- Bird parasitology and diseases
- Occupational and environmental lung diseases
- Neurogenetic and Muscular Disorders Research
- Genetic diversity and population structure
- Meat and Animal Product Quality
- Orthodontics and Dentofacial Orthopedics
- Nematode management and characterization studies
- Animal Virus Infections Studies
Universidad Nacional Hermilio Valdizán
2025
Universidad de Alcalá
2024
University of Malta
2021-2023
University of Vienna
2015-2023
University of Exeter
2014
University of Arkansas at Fayetteville
2007-2011
Food Safety and Inspection Service
2010
United States Department of Agriculture
2010
Texas A&M University
2000-2008
Southern Plains Agricultural Research Center
2005
Molting is a common practice used by the commercial egg industry to rejuvenate flocks for second or third laying cycle. During this time hens rest from production, and reproductive organs are rejuvenated increase production quality during next Although feed withdrawal (FW) most popular effective method of molt induction, it has come under scrutiny due food safety issues animal welfare issues. This study involved feeding alfalfa mixed with layer ration at different ratios determine their...
<title>Abstract</title> Background Soil is a reservoir for parasites that can affect human and animal health, especially in tropical regions where soil-transmitted helminths protozoa thrive. Understanding how environmental factors like temperature, humidity, soil type strongly influence parasite distribution essential, particularly given climate change may intensify their impacts, altering habitats increasing transmission risks. The primary goal of this study was to understand conditions...
Abstract Background Soil is a reservoir for many parasites that can affect human and animal health, especially in tropical regions where soil-transmitted helminths protozoa thrive. Understanding how environmental factors influence parasite distribution will provide basis relating climate changes may intensify their impacts, altering habitats increasing transmission risks. We surveyed soil prevalence, burden, diversity several different Peruvian ecologies to catalog current presence baseline...
Abstract: The growing interest in organic and natural foods warrants a greater need for information on the food safety of these products. In this study, samples were taken from 2 pasture flock farms ( N = 178; feed, water, drag swabs, insect traps), retail carcasses 48) 1 processing facility 16) over period 8 mo. A total 105 Campylobacter isolates obtained 53 (30%), 36 (75%), 16 (100%) farms, carcasses, facility, respectively. Of collected, 65 C. jejuni, 31 coli , 9 other spp. Using PCR,...
The objective of this in vitro study was to evaluate the effects combining a prebiotic with alfalfa on fermentation by laying hen cecal bacteria. Cecal contents from hens were diluted 1:3,000 concentration an anaerobic dilution solution and added serum tubes filled ground or layer ration without fructooligosaccharide (FOS) prebiotic. Samples processed hood, pressurized using pressure manifold, incubated at 37°C. Volatile fatty acid (VFA) lactic concentrations quantified 6 24 h substrate...
A study was conducted to evaluate effects of different bone preparation methods on parameters and the correlations between breaking strength other parameters. Bone is dramatically changed depending methods, whereas such as ash content concentration are not significantly influenced by methods. Thus, objective this 3 preparations (fresh, dry, fat-free dry) relationship Sixty Single Comb White Leghorn hens were used for study. Hens euthanized CO2 gas, right tibia femur collected. The bones...
A study was conducted to evaluate skeletal quality and eggshell parameters of molted hens at the end second laying cycle. Sixty Single Comb White Leghorn were used for this study. There 2 controls 4 molting treatments: full-fed control 1 (82 wk old; FF1), (122 FF2), feed withdrawal (FW), 100% alfalfa (A100), 90% alfalfa/10% layer ration (A90), 70% alfalfa/30% (A70). At cycle (approximately 122 age), euthanized by CO2. Tibia femur collected. no differences in bone between FF1 FF2 (P > 0.05)...
Significance Symbiotic relationships with microbes are ubiquitous among living beings and can be parasitic, such as in bacterial pathogens, or mutualistic, beneficial microbiomes. Among other factors, the outcome of microbe–host is determined by mode symbiont transmission from host to host. Here we describe how symbionts increased infectivity virulence toward their amoeba when a new was essential for survival. The enhanced parasitism result genomic changes pronounced switch gene expression...
Amyotrophic lateral sclerosis (ALS) is a rapidly progressive neuromuscular disease that has strong genetic component. Deleterious variants in the DCTN1 gene are known to be cause of ALS diverse populations. encodes p150 subunit molecular motor dynactin which key player bidirectional transport cargos within cells. Whether mutations lead through either gain or loss function mechanism remains unresolved. Moreover, contribution non-neuronal cell types, especially muscle tissue, phenotypes...
Sperm commonly compete within females to fertilize ova, but research has focused on short-term sperm storage: that are maintained in a female for only few days or weeks before use. In nature, of many species store months years, often during periods environmental stress, such as cold winters. Here we examine the outcome competition fruit fly Drosophila pseudoobscura, simulating conditions which survive winter. We mated two males and then stored up 120 at 4°C. found was consistent when from 0,...
The cross-reactivity of egg yolk antibodies specific to antigens Salmonella Enteritidis and Typhimurium killed bacterial cells common serovars were tested using an indirect Enzyme Linked Immunosorbent Assay (ELISA). Egg produced against purified fimbriae, flagella lipopolysaccharide (LPS) S. strain ATCC13076 flagella, LPS outer membrane proteins (OMP) ATCC13311. For immunological specificity cells, we found that the titers anti-S. higher than those antibodies. In evaluation these various...
Female multiple mating, known as polyandry, is ubiquitous and occurs in a wide variety of taxa. Polyandry varies greatly from species which females mate with one or two males their lifetime to may several different on the same day. As mating by associated costs, numerous hypotheses attempt explain this phenomenon. One hypothesis not extensively explored possibility that polyandrous behavior captured "fixed" populations via genetic processes preserve independently any adaptive benefit...