Acta Veterinaria et Zootechnica Sinica ›› 2022, Vol. 53 ›› Issue (2): 391-401.doi: 10.11843/j.issn.0366-6964.2022.02.007

• ANIMAL GENETICS AND BREEDING • Previous Articles     Next Articles

Construction of Molecular Pedigree and Analysis of Population Genetic Structure of Guangling Donkey

NIU Xiaoyan1, CAO Liang1, MING Shiqing2, LI Yanping1, ZHAN Haijie1, JIANG Zhiguang3, WEI Shunsheng4, ZHANG Yuanqing1*   

  1. 1. College of Animal Science, Shanxi Agricultural University, Taigu 030801, China;
    2. Shanxi Livestock Breeding Station, Taiyuan 030001, China;
    3. Guangling Donkey Breeding Farm, Guangling 037500, China;
    4. College of Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
  • Received:2021-06-10 Online:2022-02-23 Published:2022-03-02

Abstract: This study aimed to construct the molecular pedigree based on investigating of Guangling donkey population in breeding farm, and analyze its genetic structure. A total of 107 (including 13 males and 94 females) jugular vein blood of healthy adult donkey (body weight:350-400 kg) were collected, after condensant treatment, the DNA was extracted. After using 12 SSR markers for fluorescence PCR amplification, the products were genotyped on ABI3730 sequencing instrument. The molecular pedigree was constructed by Cervus 2.0 and Pedigraph 2.4 softwares, and the population genetic parameters were calculated by STRUCTURE2.3 and Fstat softwares. Moreover, the phylogenetic tree(NJ tree)of 7 male donkey and their offspring was established by hclust function of R software. In all, 107 donkey were included in the molecular pedigree and only 30 offspring were matched with their fathers, and 7 offspring were matched with their mothers, the reliance level of pedigree was higher than 90%. The HOb and PIC of SSR markers were 0.676 5 and 0.593 9, respectively. NJ phylogenetic tree included 7 male families, the FST of the current population was 0.184, the FIT was 0.033, and FIS was -0.238, the population was in Hardy-Weinberg equilibrium. This study constructed a high reliable molecular pedigree of Guangling donkey and analyzed its genetic structure. The results show that the Guangling donkey population has high genetic polymorphisms, with low inbreeding coefficient. Therefore, it is worthful to preserve the genetic information and develop its breed potentials.

Key words: Guangling donkey, microsatellite markers, molecular pedigree, population genetic structure, polymorphism

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