The multivariate statistics analysis of three sides (ie: body measurement, morphology and ecology characters) was carried out on 3 indicus populations from cooled region of south Tibet and the 3 reference populations.

The results indicated that there were various ecotypes within Tibet zebu popul.

For the eye muscle of Gayal,Zebu,Zhongdian yak,Diqing yellow cattle and Zhongdian cattle yak,the muscle fiber diameter are 57 48±1 15,109 45±1 84,100 38±6 25,90 38±5 31,and 97 35±9 62 μm respectively;the musc les fiber density are 201 54±2 66,115 45±4 04,106±10 10,90 38±5 31 and 97 35±9 6 number/mm 2;respectively the fiber number in per fasciulus are 73 23±8 90,34 32±8 77,36 22.

The muscle′s mineral contents of Zhongdian yak, Gayal,Zebu,Diqing yellow cattle and Zhongdian cattle yak have been measured.

The meat performances of the gayals(G),zebu(Z),Diqin yellow cattle(DYC),Zhongdian yak(ZY)and Zhongdian cattle yak(ZCY) in Yunnan were firstly systematically evaluated ,The body weights of G,Z,DYC,ZY,ZCY were 170.

A metagenomic library of uncultured microorganism from bovine rumen fluid content was constructed, which contained 12,000 clones and the capacity of inserted DNA of which was 4.