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Detection of single nucleotide polymorphisms at major prolificacy genes in the Mehraban sheep and association with litter size Cover

Detection of single nucleotide polymorphisms at major prolificacy genes in the Mehraban sheep and association with litter size

Open Access
|Aug 2018

Abstract

The present study aimed to investigate the presence of polymorphisms at four known genes controlling ovine prolificacy i.e. BMP15, GDF9, BMPR1B and B4GALNT2 in a sample of 115 Iranian Mehraban ewes and their association with litter size (LS) and lambs’ birth weight (BW) traits. Using Sanger sequencing of exons and polymorphism specific genotyping, ten SNPs (Single Nucleotide Polymorphisms) were observed in only two genes, GDF9 and BMPR1B. Seven SNPs were found in the GDF9 gene on the chromosome 5. Among them, six were already described in the coding sequence, and a new one (g.41840985C>T) was found in the 3’UTR. In the BMPR1B gene on the chromosome 6, three novel SNPs were detected in the exon 7 (g.29382184G>A; g.29382337G>A and g.29382340G>A). Allelic frequencies were established for six SNPs among the ten identified and they were in Hardy-Weinberg equilibrium. A significant association was found between the novel SNPs found in the exon 7 of BMPR1B and LS. Present results indicate the potential role of the BMPR1B locus in controlling prolificacy of Mehraban sheep and provide genetic markers for further exploitation in selection to improve reproductive efficiency.

DOI: https://doi.org/10.2478/aoas-2018-0014 | Journal eISSN: 2300-8733 | Journal ISSN: 1642-3402
Language: English
Page range: 685 - 698
Submitted on: Aug 3, 2017
Accepted on: Feb 12, 2018
Published on: Aug 1, 2018
Published by: National Research Institute of Animal Production
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2018 Reza Talebi, Ahmad Ahmadi, Fazlollah Afraz, Julien Sarry, Florent Woloszyn, Stéphane Fabre, published by National Research Institute of Animal Production
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.