Publications by authors named "Artur Oliveira Rocha"
Background: The profitability of the beef industry is directly influenced by the fertility rate and reproductive performance of both males and females, which can be improved through selective breeding. When performing genomic analyses, genetic markers located on the X chromosome have been commonly ignored despite the X chromosome being one of the largest chromosomes in the cattle genome. Therefore, the primary objectives of this study were to: (1) estimate variance components and genetic parameters for eighteen male and five female fertility and reproductive traits in Nellore cattle including X chromosome markers in the analyses; and (2) perform genome-wide association studies and functional genomic analyses to better understand the genetic background of male and female fertility and reproductive performance traits in Nellore cattle.
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- Researchers analyzed vaginal temperature data from lactating sows to create 15 new indicators of climatic resilience (CR) to improve pig breeding, particularly during heat stress periods.
- Heritability estimates for CR traits varied, with some traits showing moderate to high genetic correlations with key reproductive traits and indicators of heat stress.
- Sows with higher genomic estimated breeding values (GEBV), indicating they are more sensitive to climate conditions, tended to have higher skin temperature and respiration rates, but lower body condition scores compared to those with lower GEBV, suggesting differences in resilience.