柴达木绒山羊选育效果分析

对柴达木绒山羊的选育效果进行了分析,结果表明,选育后的柴达木绒山羊成年公、母羊产绒量分别提高50g和40g（P〈0.01）,体重分别增长4.49kg（P〈0.01）和1.47kg（P〈0.05）,生产性能明显提高。但在产绒量不断提高同时,绒纤维细度变粗趋势已经显现,种公羊的绒纤维细度增加0.7μm（P〈0.01）。

Analysis of Selecting and Breeding Effect for Chaidamu Down-producing Goat

The selecting and breeding effect for chaidamu Down-producing goat was analyzed,The results showed that the underfleece yeild of adult male and female Chaidamu down-producing goat increased by 50g and 40g（P〈0.01）and the body weight of them increased by 4.49kg（P〈0.01）and 1.47kg（P〈0.05）,respectively,after selecting and breeding,suggesting that the performance of them inproved obviously,But the trends of increasing thicker of underfleece fiber fineness have appeared with increasing underfleece yeild and the fineness of underfleece in adult breeding male goat increased by 0.75μm（P〈0.01）.