Correlation analysis of CLA in forage, milk, and rumen of grazing yak.

CP, crude protein; EE, crude fat; CF, crude fiber; NFE, nitrogen free extract; TD, tannic acid; TFA, total fatty acid; PUFAs, polyunsaturated fatty acid; TVFA, total volatile fatty acid; TVA, trans-11-oleic acid; * P>0.05; ** P< 0.01; ns, not significant.