Desempenho reprodutivo de um rebanho leiteiro girolando na Fazenda Califórnia, município de São Gonçalo do Amarante, Natal - RN.

Abstract

Reproductive performance of a dairy herd spinning at Fazenda California, municipality of São Gonçalo do Amarante, Natal - RN. The objective of this study was analysis the performance reproductive of a dairy herd at farm California in Natal-RN, evaluating the characterize of the reproductive efficiency and knowledge some factors of the environment as possible causes of variation in these parameters. Datas were collected on reproductive and productive life of 60 females girolando, a pattern of three pregnancy up, in the period between 2007 and 2008. Groups were formed for analysis of the datas on age at first pregnancy, considering month and year of the birth, time of year. For the interval between pregnancy groups were formed, considering the season, the order of birth and degree of miscegenation. The reproductive performance of females of the Girolando breed in farm California, was satisfactory considering the racial component, management conditions and feeding implemented in the property.