›› 2016, Vol. 43 ›› Issue (12): 3257-3262.doi: 10.16431/j.cnki.1671-7236.2016.12.026

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Comparison of Blood Physiological and Biological Indexes of the Polled Yak and Horned Yak

ZHANG Zhi-fei1, LIANG Chun-nian1, GUO Xian1, WANG Hong-bo1, DING Xue-zhi1, WU Xiao-yun1, CHU Min1, PEI Jie1, LA Huan2, ZHANG Guo-mo2, YAN Ping1   

  1. 1. Key Laboratory of Yak Breeding Engineering, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China;
    2. Qinghai Datong Yak Farm, Xining 810000, China
  • Received:2016-03-01 Online:2016-12-20 Published:2016-12-22

Abstract:

The blood physiological and biological indexes were determined in both polled and horned yaks, to investigate the differences of body condition and metabolism between the two breeds, and provide a comprehensive understanding for new yak breeds. Thirty physiological and biochemical indexes of the polled and horned yaks were measured, and all these data were analyzed by independent-samples t test to compare the same index between the two groups. The results showed that there were extremely significant differences (P<0.01) in 11 indexes,5 indexes reached significant differences (P<0.05) and no significant differences (P>0.05) in 14 indexes between the polled and horned yaks. The results suggested that the polled yak was easier to adapt to the plateau hypoxia and there were many differences in adaptability of plateau hypoxia, kidney metabolism, liver metabolism and the growth and development of the bone between the polled and horned yak. This study could provide scientific basis for better protection and utilization of yak and the selection of the new yak breeds.

Key words: yak; polled and horned yaks; physiological and biochemical indexes

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