Abstract
This paper discusses factors affecting dystocia and birth weight in Grati cattle in three villages in the Pujon district, East Java. Records of birth weight, dystocia score, village, season, parity, sex, artificial versus natural service, and age and weight of dam, were obtained from 268 parturitions. Village and weight of the dam had a significant effect on birth weight but not on dystocia. Parity had a significant effect on dystocia score. More abnormal births occurred with AI using exotic bulls. Calves from an abnormal birth were on average more than three kg heavier. First parity births combined with Al with exotic bulls had a particularly high incidence of dystocia. It is concluded that farmers in Pujon can reduce the incidence of dystocia in heifers by using local bulls only.
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