Effects of sire and dam breed genotypes on preweaning traits of calves in indigenous (Boran and Barka) and indigenous x Bos Taurus crossbred cattle
2003
Hilu Daid(Adami Tulu Research Center, Adami Tulu (Ethiopia))
The influence of sire and dam breed genotypes on birth weight (BW), average daily gain (ADG) and weaning weight (WW) in calves of Boran (B), Barka (K) and crosses of these indigenous with Bos Taurus (Friesian (F), Jersey (J), Simmental (S)) were investigated. BW of calves sired by Friesian bulls was significantly heavier (P0.05) than calves sired by Jersey, Boran, Barka, 1/2B1/2F and 1/2K1/2J bulls. Calves from Simmental were 4.5 kg heavier (p0.05) than calves sired by Barka. Calves from 1/2B1/2J-crossbred sires were 3.7 kg heavier at birth than purebred Jersey sires. ADG and WW of Barka sired calves were significantly (p0.05) different from Bos Taurus breed sires. Calves from 1/2B1/2S and 1/2B1/2F dams were heavier at birth than calves. The result also indicated that ADG and WW of Barka dams were superior (p0.05) to Boran dams.
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