SILVA, Ana Mary da.; ALENCAR, Maurício Mello de.; OLIVEIRA, Márcia Cristina de Sena.; NOVAES, Antônio Pereira de.; TULLIO, Rymer Ramiz.
Resumo:
The genetic correlations of male body weight (MW12) at 12 months of
age with female weight (BWFC) and age (AFC) at first calving, adult weight (AW),
and mature weight (A) and maturation rate (k) obtained using the Von Bertalanffy
model, were estimated. The genetic correlations, obtained by the restricted
maximum likelihood method, were: 0.19 (parameter A), 0.62 (parameter k), -0.58
(AFC), 0.69 (BWFC), and 0.60 (AW). These results indicate that selection to
increase male body weight at 12 months of age should result in favorable changes
in AFC and parameter k of females, but with increases in BWFC and AW.