On maternal and some other influences on birth weight, growth and hair coat in two Dutch cattle breeds

Birthweight was very important for growth until 12 months of age, particularly in bull calves which were heavier fed than heifer calves. Correlation between birthweight and bodyweight in bull calves was ± 0.5.The early first calving of heifers in the Netherlands (24 months of age) decreased birthweight of the first calf considerably, being 5 kg less than of calves born of cows. This difference in calfweight increased to 24 kg at 12 months of age. Autumn calves were at birth 2.5 kg heavier than spring calves. This difference increased in the first year of life to 48 kg, presumably through the d... Mehr ...