野牦牛和家养牦牛牛毛的扫描电子显微镜观察

应用扫描电子显微镜对野牦牛和家牦牛胸部、腹部、背部牛毛的鳞片花纹类型及分布、鳞片间距、毛细度等特征进行研究。结果表明,家牦牛和野牦牛牛毛的显微结构在扫描电子显微镜视野下存在一定差异,3个部位中,相对规则波浪形鳞片长度占毛总长比例家牦牛小于野牦牛;单回纹形鳞片长度占毛总长比例家牦牛大于野牦牛;毛鳞片间距家牦牛略高于野牦牛;毛最粗处直径平均值野牦牛整体大于家牦牛,以上分析表明家牦牛和野牦牛的毛可为2者鉴定提供依据。

An observation on the hair of wild Yak and domestic Yak by SEM

A study of the scaly pattern and distribution,distance of adjacent scales and the fineness of hair from the chest,abdomen and back of wild Yak and domestic Yak was conducted by Scanning Electron Microscope(SEM).The result showed as follows:The microstructure of hair from 3 parts had some differences between domestic Yak and wild Yak.The proportion of relative regular wavy scale length of domestic Yak to the total length of hair was smaller than that of wild Yak but the proportion of the relative single back pattern length to the total length of hair is larger than that of wild Yak.The distance of adjacent scales of domestic Yak slightly excelled that of wild Yak.The average diameter of the thickest hair of wild Yak was superior to that of domestic Yak.It was concluded that the above mentioned differences in microstructure of hair between domestic Yak and wild Yak could provide a basis for their identification.