Calving Difficulties among Pure-bred Charolais, Limousin, Maine-anjou and Hereford Cattle in France
نویسنده
چکیده
Calving difficulties were examined in pure-bred Charolais, Limousin, MaineAnjou and Hereford cattle maintained in stalls at Bourges, France. The cows were born in 1970 and raised together from weaning. Records of calving performance, birth weights, gestation lengths and dam weights after calving from 2 to 5 years of age were analysed to compare breeds and to estimate maternal and direct genetic components of breed differences.
منابع مشابه
Genetic parameters for calving difficulty, stillbirth, and birth weight for Hereford and Charolais at first and later parities.
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