中国美利奴羊（新疆型）各品系间毛性状的差异分析

【目的】以新疆巩乃斯种羊场的985只中国美利奴羊（新疆型）母羊为研究对象，采集其毛样，分析各品系间毛性状的差异并做相关分析。【方法】收集整理所有个体鉴定记录和剪毛记录，实验室完成平均纤维直径、纤维直径变异系数和弯曲数的测定。利用SAS8．1软件，分析品系及出生季节合并效应和群别效应对中国美利奴羊（新疆型）毛性状的影响，明确各性状间的相关关系。【结果】品系与出生季节合并效应对自然毛长、弯曲数、体格大小、剪毛量、剪毛后体重、鉴定时体重和细度支数有极显著的影响（P＜0.01），对纤维直径变异系数有显著影响（P＜0.05）；群别效应对羊毛平均纤维直径、弯曲数、油汗、鉴定时体重和细度支数有极显著影响（P＜0.01），各毛性状之间存在不同程度的相关。【结论】比较各品系间毛性状的差异，明确各性状间的相关关系，为中国美利奴羊（新疆型）羊毛品质评定提供理论依据，增加选育工作的预见性。

The Difference Analysis of Wool Traits among Strains in Chinese Merino(Xinjiang Type)

Objective]This project mainly analyzes the differences and correlation relationship with wool traits among each strain.[Method]985 ewes of Chinese Merino Sheep(Xinjiang type)in Kunas breeding farm were taken as the research object,all the individual identification and shearing records were collected and the mean fiber diameter,fiber diameter coefficient of variance and crimp number were measureed in the laboratory room.SAS8.1 software was used to analyze the strains and birth season combined effects and groups effect in each wool trait in Chinese Merino Sheep (Xinjiang type)in order to identify the correlation between them.[Re-sult]The results showed that the strains and birth season combined effects have a extremely significant effect on staple length,crimp number,body size,greasy fleece weight,body weight B,body weight A and spinning count (P<0.01),and they also have a significant effect on fiber diameter coefficient of variance(P<0.05);Groups have a extremely significant effect on the mean fiber diameter,crimp number,oil,body weight A and spinning count (P<0.01)as well,and there were some correlations of each wool traits to different degrees.[Conclu-sion]Therefore,by means of comparing the difference between the wool traits among different strains and clear relationship among each trait,the results hope to provide a theoretical support for evaluating the wool quality and further selecting Chinese Merino Sheep (Xinjiang type).