山南市黄牛改良横交固定研究及推广应用

Study and Application of Improved Crossbreed Fixation of Cattle in Shannan City

山南市是藏族的摇篮和藏文化的发祥地,是西藏自治区黄牛养殖大市,自开展黄牛改良工作30多年来,取得了巨大的成就。随着黄牛改良级进杂交的逐步推行,黄牛退化现象逐渐明显,亟需开展横交固定工作,在提高群体遗传性能的同时,保留西藏黄牛优良基因。本文就山南市黄牛改良横交固定工作的研究及推广应用做初步探讨。

Shannan City is the cradle of the Tibetan people and the birthplace of Tibetan culture,it is the big cattle market in Tibet.Since carrying out cattle improvement work for more than 30 years, it has been made great achievements.With the gradual improvement of cattle breeding ,the degeneration of cattle is becoming more and more obvious.It is urgent to carry out the cross fixation, and to improve the genetic performance of cattle while keeping the excellent gene.In this paper,we mainly conducted a preliminary discussion about the study and application of improved crossbred fixation of cattle in Shannan City of Tibet.