›› 2015, Vol. 42 ›› Issue (12): 3274-3281.doi: 10.16431/j.cnki.1671-7236.2015.12.024

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Study on Identification of Xinjiang Brown Cattle Inbred Group

MA Li-peng1, HUANG Tao1, LU Guo-chang2, LI Xiu-ying2, LU Zhen-yu2, ZHAI Teng-jiao1, CHENG Yue-cong1, FENG Shu-tang3   

  1. 1. College of Animal Science and Technology, Shihezi University, Shihezi 832000, China;
    2. Brown Cattle Farms of Tacheng Qiaxia, Tacheng 834700, China;
    3. Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
  • Revised:2015-10-20 Online:2015-12-20 Published:2015-12-30

Abstract: This study was aimed to detect the genetic similarity and groups homozygosity of Xinjiang Brown cattle inbred group.Use 13 pairs of microsatellite primers to structure of genetics in the comparative analysis by the two Xinjiang Brown cattle over 40 years completely closed breeding out 55 Xinjiang Brown cattles group and 25 Xinjiang Brown cattles in control group,in order to carry out the identification of inbred groups.For Xinjiang Brown inbred group,the homozygosity was 0.9064,the polymorphism information content was 0.0873,it was found that the groups had a low polymorphism;The homozygosity was 0.4647,and polymorphic information content was 0.4882 in Xinjiang Brown cow of control group.According to the coat color of the inbreeding groups was divided into four subgroups A,B,C and D.The genetic purity of each subgroup were 0.9029,0.9632,0.9208 and 0.9551.The results showed that the detection of Xinjiang Brown cattle inbred group had higher homozygosity and lower heterozygosity,had became a high genetic purity of inbreeding group.The closure of Xinjiang Brown cattle inbred group was rare breeds of cattle,and was valuable genetic resources.

Key words: Xinjiang Brown cattle; inbred groups; genetic similarity; homozygosity

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