Evaluation of genetic diversity and structure of Vietnamese goat populations using multi locus microsatellite markers
文献类型: 外文期刊
第一作者: Le Thi Thuy
作者: Le Thi Thuy;Luu Quang Minh;Tran Thi Thu Thuy;Nguyen Van Ba;Dinh Van Binh;Nguyen Dang Ton;Han, Jian-Lin;Periasamy, Kathiravan
作者机构:
关键词: Co goat;Bach Thao goat;Microsatellite;Genetic diversity;Population structure;Individual assignment
期刊名称:SMALL RUMINANT RESEARCH ( 影响因子:1.611; 五年影响因子:1.813 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Goats are an important component of the Vietnamese livestock industry but little is known about their genetic diversity, differentiation and population structure. We evaluated genetic diversity of seven indigenous goat populations located in different provinces (CoVBV (Co goats from Ba Vi), (CoVSL) Co goats from Son La, CoVTH (Co goats from Thanh Hoa), CoVNT (Co goats from Ninh Thuan), CoVHg (Co goats from Ha Giang), BTVBV (Bach Thoa goat from Ba Vi) and BTVNT (Bach Thoa goats from Ninh Thuan)) and used microsatellite markers to assess the gene flow and population structure among them. The basic diversity measures viz. allelic diversity and heterozygosity were low in Vietnam goats as compared to West Asian and European goats. The overall mean F-IS was significantly positive in Co goats (0.203) whereas it was only 0.003 in Bach Thao goats. Considerable genetic differentiation existed among goat populations from different provinces with the mean global F-ST, F-IT and F-IS estimated to be 0.083, 0.178 and 0.104 respectively. The phylogenetic tree constructed on pair-wise allele sharing distances revealed clustering of the two Bach Thao goat populations together. Among the Co goat populations, Son La (CoVSL) and Ha Giang (CovHG) clustered together distinctly while Thanh Hoa (CoVTH), Ba Vi (CoVBV) and Ninh Thuan (CoVNT) populations clustered intermediately. The results of multi-dimensional scaling plot of pairwise F-ST showed a similar picture except that Co-Ninh Thuan (CoVNT) was differentiated from other Co goat populations. When genotype assignment was performed at breed level, the percent correct assignment of Bach Thao goats (93.7%-96.2%) was consistently higher than Co goats (86.8%-88.1%) across the three evaluated methods. When genotype assignment at sub-population level was done, both Co (CoVNT) and Bach Thao (BTHNT) goat populations in Ninh Thuan province were assigned correctly while the percent correct assignment differed among goat populations from other provinces. AMOVA and Bayesian clustering analysis revealed the existence of significant sub-population structure and varying levels of admixture within Co goats among different provinces. The present study is the first report on genetic diversity and structure of indigenous goat populations raised in different provinces of Vietnam. (C) 2017 International Atomic Energy Agency. Published by Elsevier B.V. All rights reserved.
分类号: Q95
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