Abstract
Birth and weaning data on zebu cattle (Gudali and Wakwa) of north Central Cameroon were analysed. Calf breed, sire and sex had significant effects (P < 0.01 or 0.001) on birth weight while parity and season of birth were not important. Calf breed, sex, season of birth and birth weight had significant effects (P < 0.05 or 0.01 or 0.001) on 8-month weaning weight. Sire and parity had no significant effects (P > 0.05) on weaning weight. Wakwa calves were heavier at birth (24.30 +/- 0.42 versus 22.6 +/- 0.56 kg) and weaning (158.32 +/- 3.46 versus 148.77 +/- 2.88 kg) than Gudali calves. An increase of 1 kg in birth weight led to an increase of 1.27 kg in weaning weight. Calves born at the end of the rainy season were heavier at birth, but were lighter at weaning than those born at the beginning of the rainy season. These results suggest that under extensive low input husbandry conditions calving should be programmed for the end of dry season/early rainy season (breeding during middle to end of the rainy season).
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