Abassa P K, Mbah D A, Zamba P, Tawah L C, Messine O, Oumate H
Joint ECA/FAO Agriculture Division, Addis Ababa, Ethiopia.
Trop Anim Health Prod. 1993 Aug;25(3):179-84. doi: 10.1007/BF02236238.
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).
对喀麦隆中北部瘤牛（古达利牛和瓦夸牛）的出生和断奶数据进行了分析。犊牛品种、父亲和性别对出生体重有显著影响（P < 0.01或0.001），而胎次和出生季节则不重要。犊牛品种、性别、出生季节和出生体重对8个月龄断奶体重有显著影响（P < 0.05或0.01或0.001）。父亲和胎次对断奶体重无显著影响（P > 0.05）。瓦夸犊牛出生时（24.30 +/- 0.42对22.6 +/- 0.56千克）和断奶时（158.32 +/- 3.46对148.77 +/- 2.88千克）比古达利犊牛更重。出生体重每增加1千克，断奶体重增加1.27千克。雨季末期出生的犊牛出生时较重，但断奶时比雨季初期出生的犊牛轻。这些结果表明，在粗放式低投入养殖条件下，产犊应安排在旱季末期/雨季初期（雨季中期至末期进行配种）。
