Hair and Villus Production Performance of Tianzhu White Yak  

天祝白牦牛的毛绒生产性能

作　　者：牛春娥[1,2,3] 张利平[3] 高雅琴[1,2] 梁春年[1] 李维红[1,2] 魏云霞[1] 

机构地区：[1]中国农业科学院兰州畜牧与兽药研究所,甘肃兰州730050 [2]农业部动物毛皮及制品质量监督检验测试中心(兰州),甘肃兰州730050 [3]甘肃农业大学动物科技学院,甘肃兰州730050

出　　处：《Animal Husbandry and Feed Science》2009年第3期4-6,23,共4页动物与饲料科学（英文版）

基　　金：科技部公益类研究专项(2004DE100615);甘肃省教育厅项目(032-01);中央级公益性科研院所基本科研业务费专项资金项目(BRF070103)~~

摘　　要：[ Objective ] To analyze the hair and villus production performance of Tianzhu white yak and thus provide conditions for the genetic breed ing and product development. [Method] The hair and villus yield as well as villus rate of male and female Tianzhu white yaks from one year to six years old was detected and the villus yield was also determined. And these indexes of hair and villus were analyzed to evaluate the production per formance. [ Result] In Tianzhu white yaks from one year to two years old, the hair and villus yield was lower, but the villus rate and yield were high er. The hair and villus yield, villus rate, and villus yield were all higher in Tianzhu white yaks from three years to six years old but significantly de creased in 7yearold Tianzhu white yaks. In addition, the hair and villus yield was significantly （ P 〈 0.05） or very significantly （ P 〈 0.01 ） higher in male yaks than in female yaks. The villus rate was very significantly （ P 〈0.01 ） higher than in female yaks from five years to seven years old than in male yaks at the same age. [ Conclusion] Tianzhu white yaks from one year to two years old have the best hair and villus production perform ance; Tianzhu white yaks from three years to six years old are in the main phase of hair and villus production; Tianzhu white yaks older than seven years old should not be used for hair and villus production.[ Objective ] To analyze the hair and villus production performance of Tianzhu white yak and thus provide conditions for the genetic breed ing and product development. [Method] The hair and villus yield as well as villus rate of male and female Tianzhu white yaks from one year to six years old was detected and the villus yield was also determined. And these indexes of hair and villus were analyzed to evaluate the production per formance. [ Result] In Tianzhu white yaks from one year to two years old, the hair and villus yield was lower, but the villus rate and yield were high er. The hair and villus yield, villus rate, and villus yield were all higher in Tianzhu white yaks from three years to six years old but significantly de creased in 7yearold Tianzhu white yaks. In addition, the hair and villus yield was significantly （ P 〈 0.05） or very significantly （ P 〈 0.01 ） higher in male yaks than in female yaks. The villus rate was very significantly （ P 〈0.01 ） higher than in female yaks from five years to seven years old than in male yaks at the same age. [ Conclusion] Tianzhu white yaks from one year to two years old have the best hair and villus production perform ance; Tianzhu white yaks from three years to six years old are in the main phase of hair and villus production; Tianzhu white yaks older than seven years old should not be used for hair and villus production.

关 键 词：Tianzhu white yak Hair and villusi Production performance 

分 类 号：S823[农业科学—畜牧学]