A genome-wide scan to detect signatures of recent selection in Australian Merino sheep

Author(s)
Montazeri, M
Asadi Fozi, Masood
Esmailizadeh, A
Ferdosi, Mohammad
Van Der Werf, Julius H
Publication Date
2017
Abstract
Domestication and selection are processes that conserve the pattern of genetic diversities between and within populations. Identification of genomic regions that are targets of selection for phenotypic traits is one of the main aims of research in animal genetics. An approach for identifying divergently selected regions of the genome is to compare FST values among loci to estimate the genetic variability between and within populations. In this study, a whole genome scan using the 50K Illumina Ovine SNP chip was performed in seventeen flocks of Australian Merino sheep (8 CRC flocks and 9 SG flocks). Population differentiation using FST in these flocks revealed seven genomic regions. These areas were located on chromosomes 2 (two region), 3, 6, 7, 16 and 26 (Wintheta> 0.15). In this study, a number of candidate genes associated with reproductive and growth traits were identified. Study of the reported QTLs in these regions of the ovine and bovine genomes also showed that they associated with important traits such as reproduction, carcass yield, growth and wool traits. Further validation studies of these regions can be used to identify the candidate genes for economically important traits in sheep breeds. The results also provided intuitions for further understanding of the genetic diversities among the Merino flocks.
Citation
Journal of Livestock Science and Technologies, 5(2), p. 63-73
ISSN
2322-374X
2322-3553
Link
Publisher
Shahid Bahonar University of Kerman
Title
A genome-wide scan to detect signatures of recent selection in Australian Merino sheep
Type of document
Journal Article
Entity Type
Publication

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