A5083843934- Genetic and phenotypic traits in livestock
- Effects of Environmental Stressors on Livestock
- Reproductive Physiology in Livestock
- Genetic diversity and population structure
- Reproductive Biology and Fertility
- Livestock Management and Performance Improvement
- Meat and Animal Product Quality
- Microbial Metabolites in Food Biotechnology
- Reproductive System and Pregnancy
- Silkworms and Sericulture Research
- Enzyme Catalysis and Immobilization
- Animal Diversity and Health Studies
- Agricultural Economics and Practices
- Advanced biosensing and bioanalysis techniques
- Heat shock proteins research
- Quantum Dots Synthesis And Properties
- Carbon and Quantum Dots Applications
- Food Chemistry and Fat Analysis
- Protein Hydrolysis and Bioactive Peptides
- Biochemical Analysis and Sensing Techniques
- Animal Behavior and Welfare Studies
- Milk Quality and Mastitis in Dairy Cows
University of Wisconsin–Madison
2021-2024
Dairy Management
2022
University of Florida
2018-2020
Heat stress represents a major environmental factor that negatively affects the health and performance of dairy cows, causing huge economic losses to industry. Identifying selecting animals are thermotolerant is an attractive alternative for reducing negative effects heat on cattle performance. As such, objectives present study were estimate genetic components milk yield, fat protein yield considering perform whole-genome scans subsequent gene-set analysis identifying candidate genes...
Abstract Pregnancy loss directly impairs reproductive performance in dairy cattle. Here, we investigated genetic factors associated with pregnancy following detection of a viable embryo around 42 days gestation. The objectives this study were to perform whole-genome scans and subsequent gene-set analyses for identifying candidate genes, functional gene-sets gene signaling pathways implicated US Holstein cows. Data consisted about 58,000 pregnancy/abortion records distributed over...
The present study aimed to estimate covariance components of milk fatty acids (FA) and compare the genomic estimated breeding values under general heat-stress effects. Data consisted 38,762 test-day records from 6,344 Holstein cows obtained May 2012 through January 2018 on 4 dairy herds Brazil. Single-trait repeatability models with random regressions as a function temperature-humidity index were used for genetic analyses. included contemporary groups, parity order (1-6), days in classes...
Milk fever is an important metabolic disorder that affects dairy cows around parturition. It associated with a breakdown in the mechanisms of calcium homeostasis, resulting very low blood levels (hypocalcemia). The main objective this study was to dissect genetic basis underlying milk incidence Holstein cattle. Data consisted 31.6k producer-recorded lactation records from 15.3k cows. analysis included whole-genome scan and subsequent gene-set order reveal individual genes, biological...
Heat stress negatively impacts the reproductive performance of dairy cows. The main objective this study was to dissect genetic basis underlying cow fertility under heat conditions. Our first goal estimate components conception across lactations considering stress. second reveal individual genes and functional gene-sets that explain a cow's ability conceive thermal Data consisted 74 221 insemination records on 13 704 Holstein Multitrait linear repeatability test-day models with random...
Successful delivery of plasmid DNA into the microbial cells is fundamental in recombinant technology. Natural bacterial transformation limited to only certain species due part repulsive forces between negatively charged and membranes. Most common method bacteria artificial through heat shock electroporation. These methods require sophisticated instruments tedious steps preparation competent cells. Transformation by conjugation also not applicable all plasmids. Nanoparticles have been used...
Genomic selection has revolutionized the dairy cattle breeding industry, with ripple effects that have greatly impacted herd management. Rate of genetic progress increased markedly, especially in Holstein and Jersey breeds, for production, health, fertility traits. testing young bulls heifers provides greater accuracy decisions involving traditional traits, such as daughter pregnancy rate, while creating opportunity to improve novel fetal loss. Cameras, wearable sensors, other precision...
Genetic selection has been an effective strategy to improve calving traits including stillbirth in dairy cattle. The primary objectives of the present study were characterize data and determine feasibility implementing routine genetic evaluations five non-Holstein breeds, namely Ayrshire, Guernsey, Milking Shorthorn, Brown Swiss, Jersey. An updated sire-maternal grandsire threshold model was used estimate parameters values for stillbirth. Stillbirth with birth years dams from 1995 2018...
Pregnancy loss is recognized as one of the major factors contributing to poor reproductive performance in dairy cattle. Here, we performed a comprehensive genetic analysis fetal loss, defined pregnancy that occurs after detection viable embryo around 42 d gestation. The objectives this study were reveal (1) whether heritable and, hence, it will respond selection, and (2) what extent current fertility traits, such daughter rate, are associated with loss. Data consisted 59,308 confirmed or...