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Artigo Produção Nacional Revisado por pares
BIBTEX RIS

Genetic aspects of productive and reproductive traits in a Murrah buffalo herd in São Paulo, Brazil

2000; Wiley; Volume: 117; Issue: 5 Linguagem: Inglês

10.1046/j.1439-0388.2000.00249.x

ISSN

1439-0388

Autores

Humberto Tonhati, F. B. Vasconcellos, Lúcia Galvão de Albuquerque,

Tópico(s)

Effects of Environmental Stressors on Livestock

Resumo

Summary This study investigated genetic trends of some productive and reproductive traits in a herd of Murrah buffalo raised in São Paulo, Brazil. Variance components for milk production (MP), length of lactation (LL), calving interval (CI) and age of first calving (AFC) were estimated by the restricted maximum likelihood method, using an animal model. Estimated heritability values were 0.38; 0.01; 0.10 and 0.20 for MP, LL, CI and AFC, respectively. Estimated repeatability values were 0.50, 0.13 and 0.20 for MP, LL and CI, respectively. Means of predicted breeding values for cows, dams and sires according to calving year and the genetic correlations were presented.

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