Arnold J W, Bertrand J K, Benyshek L L
Department of Animal and Dairy Science, University of Georgia, Athens 30602.
J Anim Sci. 1992 Nov;70(11):3322-32. doi: 10.2527/1992.70113322x.
Extension of beef cattle genetic evaluation procedures to multibreed data sets is proposed as a way to allow inclusion of crossbred animals into current analyses and to provide comparisons between purebred animals of different breeds. Previous papers dealing with multibreed BLUP have proposed sire or sire-maternal grandsire models. Because current models used in the beef industry are predominantly of the reduced animal model form, models were developed for animal model and reduced animal model mixed-model evaluations that would account for fixed and random additive genetic effects, along with fixed and random nonadditive genetic effects for populations with heterogeneous means and variances.
有人提议将肉牛遗传评估程序扩展到多品种数据集，以便将杂交动物纳入当前分析，并对不同品种的纯种动物进行比较。之前处理多品种最佳线性无偏预测（BLUP）的论文提出了父系或父系-母系祖父模型。由于肉牛行业目前使用的模型主要是简化动物模型形式，因此开发了用于动物模型和简化动物模型混合模型评估的模型，这些模型将考虑固定和随机加性遗传效应，以及具有异质均值和方差的群体的固定和随机非加性遗传效应。
