运用动物模型BLUP法估计荷斯坦牛育种值及制定总性能指数

Estimation of Breeding Values in Holstein Cattle Using Animal BLUP Model

【目的】探讨动物模型BLUP法在估计新疆地区荷斯坦牛育种值中的应用,为荷斯坦牛的选种选配计划提供理论依据。【方法】利用新疆呼图壁种牛场牧一场、牧二场及牧三场1996-2010年共15 a荷斯坦牛生产性能记录资料,运用动物模型BLUP法,对荷斯坦牛进行单性状育种值估计。【结果】估计得到公牛产奶量育种值、乳脂率育种值、乳蛋白率育种值排名第一的分别为94166、8466、11100120号;母牛产奶量育种值、乳脂率育种值、乳蛋白率育种值排名第一的分别为120030103、120040007、320030159号;并根据产奶量、乳脂率、乳蛋白率育种值制定了荷斯坦牛总性能指数公式（TPI）。【结论】为使种牛评定更准确,需综合考虑产奶量和乳成分等性状,制定荷斯坦奶牛总性能指数公式。

【Objective】The study aims to explore the animal model BLUP method to estimate the breeding value of Xinjiang Holstein cattle in actual application and provide a theoretical basis for the cattle selection scheme.【Method】The lactation production performance record of Hutubi Cattle Farm over the past 15 years（ 1996-2010） was collected. Estimation of breeding value for the Holstein cows was conducted using animal model BLUP.【Result】The results showed that the estimated breeding value for milk yield,milk fat percentage,and milk protein percentage ranked 94166,8466 and 11100120 in the cattle. The breeding value of milk yield,milk fat percentage,milk protein percentage ranked 120030103,120040007 and 320030159.【Conclusion】To make the estimation more accurate,a comprehensive selection index using a variety of trait should be developed.