AVALIAÇÃO DO DESEMPENHO PRODUTIVO/REPRODUTVO DE VACAS LEITEIRAS MESTIÇAS ANTES E DEPOIS DO MANEJO NO SISTEMA “COMPOST BARN”
Keywords:
Dairy cattle, milk production, postpartum health, reproductive efficiencyAbstract
Factors such as high temperatures and low reproductive efficiency in herds halt the advance of Brazilian milk production. The Compost Barn (CB) is a type of confinement system used for dairy herds, which can provide greater confort to the animals,but because it is still a new management system in Brazil, there are few studies on its impact on productivity in tropical environments. Therefore, the aim was to compare the service period and the corrected milk production for 305 lactation days of crossbred dairy cows (Holstein x Gir), previously managed in the grazing system and then introduced in the “Compost Barn” system. One hundred twenty two cows were evaluated, one lactation before and one lactation after entry into the CB management system. A reduction in the period of service (p=0.02) was detected from 104.92 to 84.46 days after entering the CB management system, but milk production, corrected for 305 days of lactation, was not affected by management system (p>0.05). It was concluded that there was a reduction in the service period in crossbred dairy cows after the animals entered the Compost Barn system, indicating an improvement in the fertility of the dairy herd.
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