西藏绒山羊绒纤维直径变异的研究  

CASHMERE DIAMETER DEVIATION OF TIBETAN CASHMERE GOATS

作　　者：李永军[1] 李卯年[1] 曹永新[2] 宋雅琴[1] 马秉红 张强[4] 

机构地区：[1]吉林农业大学动物科学系,长春130118 [2]农业部全国畜牧兽医总站 [3]西藏自治区日土县政府 [4]西藏自治区阿里地区农牧局

出　　处：《畜牧兽医学报》1999年第5期432-437,共6页ACTA VETERINARIA ET ZOOTECHNICA SINICA

摘　　要：本文研究了西藏绒山羊绒纤维直径的变异。西藏绒山羊在３ 周岁时绒纤维直径达到最粗，日土型母羊和公羊３ 周岁时羊绒平均细度为１４９７ 和１４９３μｍ ，尼玛型母羊和公羊３ 周岁时羊绒平均细度为１３９３ 和１３３５μｍ 。公羊的绒纤维直径明显比母羊小（ Ｐ＜ ０．０１）。单根纤维不同段间、毛丛内纤维间、体躯不同部位间绒纤维直径具有良好的匀度。西藏绒山羊群体中有６５％ 的个体绒纤维直径在１４００μｍ 以下，３ 周岁时绒纤维直径在１４μｍ 以下的个体比例最小，日土型为 ３１２５％ ，尼玛型为 ５８９７％ 。绒纤维直径在 １０～１１．９９、１２～１４．９９μｍ 之间个体比例，尼玛型为 ２８３％ 和９０４１％ ，日土型为６９８％ 和７７６５％ 。Cashmere diameter deviation of Ritu type(RTG)and Nima type (NTG) of Tibetan cashmere goats was investigated in this paper.The down diameter reached its maximum at the 3rd year of age,with mean down diameter 14.97 and 14.93 μm in does and bucks of RTG respectively,and 13.93 and 13.35μm in does and bucks of NTG.The mean down diameter of bucks was significantly lower than that of does ( P <0.01).Evenness of down diameters among different parts of single fiber,fibers of individual goat or different body regions of goat was excellent.Down diameters of 65% individuals in Tibetan goat population were higher than 14μm.The percentage of individuals with not higher than 14 μm down diameter in population was smallest at the third year of age,being 31.25% in RTG and 58.97% in NTG.The percentage of individuals with 10～11 99 and 12～14.99μm was 2.83 and 90.41% in NTG,and 6.98 and 77.65% in RTG.

关 键 词：西藏绒山羊 绒纤维直径变异 群体分布 绒山羊 

分 类 号：S827.83[农业科学—畜牧学] S827.2[农业科学—畜牧兽医]