Publications by authors named "F Penagaricano"
Changes in maternal nutrition during the periconceptional period can influence postnatal growth in cattle. This study aimed to identify the impact of supplementing beef cows with rumen-protected methionine (RP-Met) during the periconceptional period on their female progeny. In exp 1, plasma methionine (Met) levels were analyzed in samples from 10 Angus crossbred, non-lactating beef cows.
View Article and Find Full Text PDFThe placenta plays a pivotal role in fetal development and the dam's subsequent lactation performance, as it facilitates nutrient transfer, heat dissipation, gas exchange with the growing fetus, and regulates key hormones essential for mammary gland development. Heat stress experienced during gestation and lactation can significantly reduce the placenta's capacity to perform these critical functions. To investigate the impact of heat stress, trials were conducted over the summer months of 2020, 2022, and 2023 in Florida.
View Article and Find Full Text PDFBull fertility has been recognized as an important factor affecting dairy herd fertility. The objective of this study was to assess the feasibility of predicting male fertility in Brown Swiss cattle using genomic data. The dataset consisted of 1,102 Italian Brown Swiss bulls with sire conception rate (SCR) records and genotype data for roughly 480k SNP.
View Article and Find Full Text PDFFeeding behaviour traits, such as number, duration or intake per feeder visit, have been associated with feed efficiency in dairy cattle. Those traits, however, do not fully capture cows' feeding patterns throughout the day. The goal of this study was to propose a new phenotype for characterising within-day feeding patterns and estimate its heritability and genetic correlations with dry matter intake (DMI), secreted milk energy, metabolic body weight and residual feed intake.
View Article and Find Full Text PDFArticle Synopsis
- Ruminants, like dairy cows, can digest plant materials that humans cannot, thanks to the microbes in their rumen that provide essential nutrients for growth and milk production.
- This study aimed to explore the genetic and microbial factors influencing feed efficiency in lactating Holstein cows by analyzing their intake and milk production data alongside their genetic makeup.
- The researchers discovered genetic regions linked to the abundance of certain rumen microbes, revealing complex interactions where the cow's genome directly and indirectly influences feed efficiency and microbial populations, suggesting implications for breeding practices.