辽宁绒山羊产绒性能年度效应分析

Analysis of annual effect of cashmere performance of Liaoning cashmere goats

为研究辽宁绒山羊不同年份生产性能变化状况,试验采集了辽宁绒山羊原种场和辽宁绒山羊示范场2003~2009年母羊的产绒量、绒长度、绒细度和体重数据。结果表明:绒山羊产绒量、绒长度、绒细度和体重随年份不同呈现显著变化。2003~2008年间产绒量呈递增趋势,但随着绒细度选育的加强,2009年略有下降;除2004年外,绒长度每年稳步上升,2007~2009年趋势平稳,说明选育趋于稳定,保持优良性状;2003~2006年绒细度逐步增加,2006~2008年绒细度逐步下降,到2009年趋于稳定并略有上升。体重随年份推进呈增加趋势。通过分析,可以得出本品种系统选育工作效果显著,各表型性状得到稳定提升。

In order to study the changes of production performance of Liaoning cashmere goats in different years,the experiment collected data on the yield,cashmere length,fineness and weight of ewes from 2003 to 2009 in the Liaoning cashmere goat stock farm and Liaoning cashmere goat demonstration farm.The results showed that the cashmere yield,cashmere length,cashmere fineness and body weight of the cashmere goats showed significant changes with different years.From 2003 to 2008,the amount of cashmere production showed an increasing trend,but with the increase in the selection of cashmere fineness,it decreased slightly in 2009.Except 2004,the cashmere length increased steadily every year,and the trend from 2007 to 2009 was stable,indicating that breeding trend is stable and maintains excellent characteristics.From 2003 to 2006,the fineness of velvet gradually increased,from 2006 to 2008,the fineness of velvet gradually.decreased,and it stabilized and slightly increased by 2009.Weight increases with the year.Through analysis,it can be concluded that the systematic selection of this variety has a significant effect,and various phenotypic traits have been steadily improved.