van Zyl J G, Schoeman S J, Coertze R J, Groeneveld H T
Department of Livestock Science, University of Pretoria, South Africa.
Int J Biometeorol. 1991 Sep;35(2):88-91. doi: 10.1007/BF01087482.
The influence of different breeds of sire and dam types on cow productivity in an arid, subtropical environment was studied. Cows with calves sired by Simmentaler, Hereford and Bonsmara bulls were more (P less than 0.05) productive than those with calves sired by Afrikaner bulls. Simmentaler sires were superior (P less than 0.05) to Bonsmara sires. Crossbred cows of predominant (greater than 50%) Bos taurus breeding were generally superior to crossbreds of predominant B. indicus breeding and purebreds. Crossbreeding systems to utilize breed effects to optimise cow productivity within environmental constraints are discussed.
研究了不同品种的父本和母本类型对干旱亚热带环境中奶牛生产力的影响。与由阿非利卡公牛所产犊牛的母牛相比，由西门塔尔牛、赫里福德牛和邦斯玛拉公牛所产犊牛的母牛生产力更高（P<0.05）。西门塔尔牛种公牛优于（P<0.05）邦斯玛拉牛种公牛。以欧洲牛（Bos taurus）为主（大于50%）的杂交母牛通常优于以印度瘤牛（B. indicus）为主的杂交牛和纯种牛。讨论了在环境限制范围内利用品种效应优化奶牛生产力的杂交系统。
