Productive and reproductive performance of dairy cattle Guzerath

Abstract

Evaluated the reproductive and productive performance of a dairy herd Guzerath in Uberlândia - MG. Were analyzed: age at first insemination, age at first birth, gestation period, period of service, calving interval, lactation length, dry period of the udder, milk yield per lactation, birth weight, and number of services per conception and percentage of calf mortality. The average age at first insemination and calving showed up late for practices, inadequate management, especially nutrition and reproductive systems. The imprecision in the detection of estrus may have contributed to the delay of these ages. The gestation period was found to be within expectations, since it is a characteristic of low phenotypic variability. The average service period was found to be above what is considered ideal to obtain mean calving interval of around twelve months. Calving interval proved to be compromised by the high period of service. The average lactation period was found to be within the range normally found in the literature. The mean dry period of the udder was found to be well above the normally recommended to efficient dairy farm. The average milk yield per lactation was found to be lower than those cited in the literature. Birth weight and number of services per conception and mortality of calves were in favor according to the literature.