Studies on milk production and growth of Friesian x Bunaji crosses: II. Growth to yearling age.

The data analysed consisted of body weight records at birth, and at 3, 6, 9 and 12 months of age of 549 half Friesian x Bunaji crossbred heifers collected over a twenty-five yoar period(1965-1989). Least squares means ± s.e. of body weights at birth, 3, 6, 9 and 12 months of age were 26.7±1.3, 72.4±4.5, 112.9±6.9, 147.2±9.2 and 182.1±11.1 kg, respectively. Year of birth was highly significant(p<0.01) in affecting body weights at all ages, while the effect of month of birth was not. Seasonal influence on birth weight and body weights at 3 and 6 months of age was significant(p<0.05). Phenotypic correlations between body weights at all ages were positive and highly significant(p