Publications by authors named "Sindy L C Nasner"
This study aimed to investigate the differences between productive and reproductive performance traits of sexually precocious and non-sexually precocious Nellore heifers and to evaluate the genetic correlation of sexual precocity with traits of economic importance. For this purpose, 300,000 Nellore heifers were evaluated for reproductive traits: heifer pregnancy (HP) at 14 (HP), 18 (HP), and 24 (HP) months; heifer rebreeding (HR); number of progenies up to 53 months (NP); and probability of the cow remaining in the herd until 76 months with at least 3 progenies (Stay). The growth-related traits evaluated included female yearling weight (YW); average daily gain from weaning to yearling (ADG); weight at maturity (MW); weaning weight of first progeny (WW); and female visual scores at yearling for conformation (Conf), precocity (Prec) and muscling (Musc).
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- - The study focuses on improving beef cattle profitability by addressing reproductive traits like age at first calving and gestation length, which are challenging due to their low heritability and sex-limited characteristics.
- - Researchers aimed to identify specific genomic regions in the Blanco Orejinegro (BON) breed that affect these reproductive traits using a large dataset of 439 animals and over 118,000 genetic markers (SNPs).
- - Findings revealed significant genetic factors associated with reproductive, growth, immune response, and environmental adaptation traits, suggesting important implications for genetic improvement and conservation efforts for Colombian creole cattle.