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Efeito da idade da vaca ao parto e da data juliana de nascimento sobre caracteristicas pre-desmama de bezerros da raca Gir


, : Efeito da idade da vaca ao parto e da data juliana de nascimento sobre caracteristicas pre-desmama de bezerros da raca Gir. Revista Brasileira de Zootecnia 31(1): 61-70

The aims of this research were to estimate the influence of age of dam at calving (AC), and julian date of birth (JDB) on weaning weight (WW) and preweaning average daily gain (ADG) of gyr calves and adjustment factors for them. It was analyzed 10,685 and 18,339 records, on WW and ADG of Gyr calves, from the Associacao Brasileira dos Criadores de Zebu data set belonging to 1229 and 1979 contemporary groups (CG), respectively.

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