Victor Breno Pedrosa
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View article: Genome-wide association and functional genomic analyses for udder conformation traits derived from data recorded by robotic milking systems in American Holstein cattle
Genome-wide association and functional genomic analyses for udder conformation traits derived from data recorded by robotic milking systems in American Holstein cattle Open
The implementation of automatic milking systems (AMS) in modern dairy farming has significantly facilitated genetic evaluation of udder conformation traits in dairy cattle. As AMS-based udder conformation traits are highly heritable in Hol…
View article: Genotype imputation accuracy of X chromosome variants in Holstein cattle based on different software and imputation strategies
Genotype imputation accuracy of X chromosome variants in Holstein cattle based on different software and imputation strategies Open
The X chromosome is one of the largest in the cattle genome, but little is known about the imputation of X chromosome variants. Thus, the main objective of this study was to assess the imputation accuracy of SNPs located in the X chromosom…
View article: Longevity and Culling Reasons in Dairy Herds in Southern Brazil
Longevity and Culling Reasons in Dairy Herds in Southern Brazil Open
This study aimed to evaluate cow longevity and identify the main culling reasons in dairy herds in Southern Brazil. Two data sets from 26 predominantly confined Holstein herds were analyzed over a 10-year period (2007–2016). The first incl…
View article: Genetic parameters and genome-wide association studies including the X chromosome for various reproduction and semen quality traits in Nellore cattle
Genetic parameters and genome-wide association studies including the X chromosome for various reproduction and semen quality traits in Nellore cattle Open
View article: Genome-wide association and functional genomic analyses for body conformation traits in North American Holstein cattle
Genome-wide association and functional genomic analyses for body conformation traits in North American Holstein cattle Open
Body conformation traits are directly associated with longevity, fertility, health, and workability in dairy cows and have been under direct genetic selection for many decades in various countries worldwide. The main objectives of this stu…
View article: Investigating the genomic background of calving-related traits in Canadian Jersey cattle
Investigating the genomic background of calving-related traits in Canadian Jersey cattle Open
Traits related to calving have a significant impact on animal welfare and farm profitability in dairy production systems. Identifying genomic regions associated with calving traits could contribute to refining dairy cattle breeding program…
View article: Genome-Wide Association Study of Conformation Traits in Brazilian Holstein Cattle
Genome-Wide Association Study of Conformation Traits in Brazilian Holstein Cattle Open
The linear conformation of animals exerts an influence on health, reproduction, production, and welfare, in addition to longevity, which directly affects the profitability of milk-producing farms. The objectives of this study were (1) to p…
View article: Detection and evaluation of parameters influencing the identification of heterozygous-enriched regions in Holstein cattle based on SNP chip or whole-genome sequence data
Detection and evaluation of parameters influencing the identification of heterozygous-enriched regions in Holstein cattle based on SNP chip or whole-genome sequence data Open
View article: A systematic review with meta‐analysis of heritability estimates for temperament‐related traits in beef and dairy cattle populations
A systematic review with meta‐analysis of heritability estimates for temperament‐related traits in beef and dairy cattle populations Open
Temperament (docility) is a key breeding goal in the cattle industry due to its direct relationship with animal welfare, cattle handler's safety and animal productivity. Over the past six decades, numerous studies have reported heritabilit…
View article: Genetic parameters for udder conformation traits derived from Cartesian coordinates generated by robotic milking systems in North American Holstein cattle
Genetic parameters for udder conformation traits derived from Cartesian coordinates generated by robotic milking systems in North American Holstein cattle Open
Udder conformation is directly related to milk yield, cow health, workability, and welfare. Automatic milking systems (AMS, also known as milking robots) have become popular worldwide, and the number of dairy farms adopting these systems h…
View article: Impact of parity number, milk production and somatic cell count on the reproduction of Holstein cows – ERRATUM
Impact of parity number, milk production and somatic cell count on the reproduction of Holstein cows – ERRATUM Open
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View article: Machine learning methods for genomic prediction of cow behavioral traits measured by automatic milking systems in North American Holstein cattle
Machine learning methods for genomic prediction of cow behavioral traits measured by automatic milking systems in North American Holstein cattle Open
Identifying genome-enabled methods that provide more accurate genomic prediction is crucial when evaluating complex traits such as dairy cow behavior. In this study, we aimed to compare the predictive performance of traditional genomic pre…
View article: Oxidative Stability of Flaxseed (Linum usitatissimum L.) Cake and its Inclusion in the Diet of Lactating Cows
Oxidative Stability of Flaxseed (Linum usitatissimum L.) Cake and its Inclusion in the Diet of Lactating Cows Open
The objective was to evaluate the oxidative stability of flaxseed cake and its inclusion in the diet of lactating cows, on milk production and composition and blood parameters (total cholesterol, triglycerides, high density lipoprotein -HD…
View article: Longitudinal genomic analyses of automatically-recorded vaginal temperature in lactating sows under heat stress conditions based on random regression models
Longitudinal genomic analyses of automatically-recorded vaginal temperature in lactating sows under heat stress conditions based on random regression models Open
Background Automatic and continuous recording of vaginal temperature (T V ) using wearable sensors causes minimal disruptions to animal behavior and can generate data that enable the evaluation of temporal body temperature variation under …
View article: A comprehensive meta-analysis of genetic parameters for resilience and productivity indicator traits in Holstein cattle
A comprehensive meta-analysis of genetic parameters for resilience and productivity indicator traits in Holstein cattle Open
Selection for resilience indicator (RIND) traits in Holstein cattle is becoming an important breeding objective as the worldwide population is expected to be exposed to increased environmental stressors due to both climate change and chang…
View article: Genome-wide association and functional genomic analyses for various hoof health traits in North American Holstein cattle
Genome-wide association and functional genomic analyses for various hoof health traits in North American Holstein cattle Open
Hoof diseases are a major welfare and economic issue in the global dairy cattle production industry, which can be minimized through improved management and breeding practices. Optimal genetic improvement of hoof health could benefit from a…
View article: 139 Genomic-Based Genetic Parameters of Behavioral Ethogram Traits in Lactating Sows Under Heat Stress Conditions and Their Relationship with Direct Indicators of Heat Tolerance
139 Genomic-Based Genetic Parameters of Behavioral Ethogram Traits in Lactating Sows Under Heat Stress Conditions and Their Relationship with Direct Indicators of Heat Tolerance Open
Increased global temperatures pose challenges to livestock agriculture. Domestic swine are particularly sensitive to hotter environments due to their inability to sweat, litter bearing nature, difficulty in expressing natural cooling behav…
View article: PSVII-4 Genetic Parameters for Various Semen Quality and Reproductive Performance Traits in Nellore Cattle Including X Chromosome Markers
PSVII-4 Genetic Parameters for Various Semen Quality and Reproductive Performance Traits in Nellore Cattle Including X Chromosome Markers Open
Estimating genetic parameters of male and female fertility and reproduction traits is essential for optimizing beef cattle breeding programs. In general, only markers located on autosomal chromosomes are used for genetic evaluations. Sex c…
View article: Genetic parameters for calf feeding traits derived from automated milk feeding machines and number of bovine respiratory disease treatments in North American Holstein calves
Genetic parameters for calf feeding traits derived from automated milk feeding machines and number of bovine respiratory disease treatments in North American Holstein calves Open
Precision livestock farming technologies, such as automatic milk feeding machines, have increased the availability of on-farm data collected from dairy operations. We analyzed feeding records from automatic milk feeding machines to evaluat…
View article: Unraveling the genomic background of resilience based on variability in milk yield and milk production levels in North American Holstein cattle through genome-wide association study and Mendelian randomization analyses
Unraveling the genomic background of resilience based on variability in milk yield and milk production levels in North American Holstein cattle through genome-wide association study and Mendelian randomization analyses Open
Breeding more resilient animals will benefit the dairy cattle industry in the long term, especially as global climate changes become more severe. Previous studies have reported genetic parameters for various milk yield-based resilience ind…
View article: Genomic-based genetic parameters for resilience across lactations in North American Holstein cattle based on variability in daily milk yield records
Genomic-based genetic parameters for resilience across lactations in North American Holstein cattle based on variability in daily milk yield records Open
Considering the increasing challenges imposed by climate change and the need to improve animal welfare, breeding more resilient animals capable of better coping with environmental disturbances is of paramount importance. In dairy cattle, r…
View article: Genetic parameters for various semen production and quality traits and indicators of male and female reproductive performance in Nellore cattle
Genetic parameters for various semen production and quality traits and indicators of male and female reproductive performance in Nellore cattle Open
View article: Genomic-based genetic parameters for milkability traits derived from automatic milking systems in North American Holstein cattle
Genomic-based genetic parameters for milkability traits derived from automatic milking systems in North American Holstein cattle Open
The number of dairy farms adopting automatic milking systems (AMS) has considerably increased around the world aiming to reduce labor costs, improve cow welfare, increase overall performance, and generate a large amount of daily data, incl…
View article: A comprehensive characterization of longevity and culling reasons in Canadian Holstein cattle based on various systematic factors
A comprehensive characterization of longevity and culling reasons in Canadian Holstein cattle based on various systematic factors Open
The decision of premature culling cows directly impacts the profitability of dairy farms. A comprehensive characterization of the primary causes of culling reasons would greatly improve both management and selection objectives in dairy cat…
View article: Holstein_Meta_Analysis_ Supplementary_Material
Holstein_Meta_Analysis_ Supplementary_Material Open
Supplementary Materials
View article: Holstein_Meta_Analysis_ Supplementary_Material
Holstein_Meta_Analysis_ Supplementary_Material Open
Supplementary Materials
View article: Weighted Single-Step Genome-Wide Association Study and Functional Enrichment Analyses for Gastrointestinal Nematode Resistance Traits in Santa Ines Sheep
Weighted Single-Step Genome-Wide Association Study and Functional Enrichment Analyses for Gastrointestinal Nematode Resistance Traits in Santa Ines Sheep Open
View article: Genome-Wide Association Analysis Reveals Novel Loci Related with Visual Score Traits in Nellore Cattle Raised in Pasture–Based Systems
Genome-Wide Association Analysis Reveals Novel Loci Related with Visual Score Traits in Nellore Cattle Raised in Pasture–Based Systems Open
Body conformation traits assessed based on visual scores are widely used in Zebu cattle breeding programs. The aim of this study was to identify genomic regions and biological pathways associated with body conformation (CONF), finishing pr…
View article: Genetic and Genomic Characterization of a New Beef Cattle Composite Breed (Purunã) Developed for Production in Pasture-Based Systems
Genetic and Genomic Characterization of a New Beef Cattle Composite Breed (Purunã) Developed for Production in Pasture-Based Systems Open
Purunã is a composite beef cattle breed, developed in Southern Brazil by crossing the Angus, Charolais, Canchim, and Caracu breeds. The goal of this study was to perform the first genetic characterization of the Purunã breed, based on both…
View article: Identifying pleiotropic variants and candidate genes for fertility and reproduction traits in Holstein cattle via association studies based on imputed whole-genome sequence genotypes
Identifying pleiotropic variants and candidate genes for fertility and reproduction traits in Holstein cattle via association studies based on imputed whole-genome sequence genotypes Open
Background Genetic progress for fertility and reproduction traits in dairy cattle has been limited due to the low heritability of most indicator traits. Moreover, most of the quantitative trait loci (QTL) and candidate genes associated wit…