title: Polymorphisms of the Ovine BMPR-IB, BMP-15 and FSHR and Their Associations with Litter Size in Two Chinese Indigenous Sheep Breeds.
abstract: The Small Tailed Han sheep and Hu sheep are two prolific local sheep in China. In this study, the polymorphisms of BMPR-IB (Bone morphogenetic protein receptor IB), BMP-15 (Bone morphogenetic protein 15) and FSHR (follicle stimulating hormone receptor) were investigated to check whether they are associated with litter size in Small Tailed Han sheep and Hu sheep. Consequently, three polymorphisms, FecB mutation in BMPR-IB (c.746A>G), FecG mutation in BMP-15 (c.718C>T) and the mutation (g. 47C>T) in FSHR were found in the above two sheep breeds with a total number of 1630 individuals. The single marker association analysis showed that the three mutations were significantly associated with litter size. The ewes with genotype FecBB/FecBB and FecBB/FecB+ had 0.78 and 0.58 more lambs (p < 0.01) than those with genotype FecB+/FecB+, respectively. The heterozygous Han and Hu ewes with FecXG/FecX+ genotype showed 0.30 (p = 0.05) more lambs than those with the FecX+/FecX+ genotype. For FSHR gene, the ewes with genotype CC had 0.52 (p < 0.01) and 0.75 (p < 0.01) more lambs than those with genotypes TC and TT, respectively. Combined effect analyses indicated an extremely significant interaction (p < 0.01) between the random combinations of BMPR-IB, BMP-15 and FSHR genes on litter size. In addition, the Han and Hu ewes with BB/G+/CC genotype harbor the highest litter size among ewes analyzed in current study. In conclusion, BMPR-IB, BMP-15 and FSHR polymorphisms could be used as genetic markers in multi-gene pyramiding for improving litter size in sheep husbandry.
authors.affiliation: College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730000, China. wangwm@gsau.edu.cn.
authors.forename: Weimin
authors.initials: W
authors.lastname: Wang
authors.affiliation: College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730000, China. 15604258787@163.com.
authors.forename: Shijia
authors.initials: S
authors.lastname: Liu
authors.affiliation: College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730000, China. lifd@gsau.edu.cn.
authors.forename: Fadi
authors.initials: F
authors.lastname: Li
authors.affiliation: College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730000, China. bendanpanxiangyu@163.com.
authors.forename: Xiangyu
authors.initials: X
authors.lastname: Pan
authors.affiliation: College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730000, China. lichong@gsau.edu.cn.
authors.forename: Chong
authors.initials: C
authors.lastname: Li
authors.affiliation: College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730000, China. zhangxx@gsau.edu.cn.
authors.forename: Xiaoxue
authors.initials: X
authors.lastname: Zhang
authors.affiliation: College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730000, China. litingfu@ztyangye.com.|Engineering Laboratory of Sheep Breeding and Reproduction Biotechnology in Gansu Province, Minqin 733300, China. litingfu@ztyangye.com.
authors.forename: Youji
authors.initials: Y
authors.lastname: Ma
authors.affiliation: College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730000, China. 15294158469@163.com.
authors.forename: Yongfu
authors.initials: Y
authors.lastname: La
authors.affiliation: College of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730000, China. 527233669xr@sina.com.
authors.forename: Rui
authors.initials: R
authors.lastname: Xi
authors.affiliation: Engineering Laboratory of Sheep Breeding and Reproduction Biotechnology in Gansu Province, Minqin 733300, China. litingfu@ztyangye.com.|Minqin Zhongtian Sheep Industry Co., Ltd., Minqin 733300, China. litingfu@ztyangye.com.
authors.forename: Tingfu
authors.initials: T
authors.lastname: Li
mesh_terms: D000818:Animals; D055430:Bone Morphogenetic Protein 15 / Q000235:genetics*; D052005:Bone Morphogenetic Protein Receptors, Type I / Q000235:genetics*; D001947:Breeding; D002681:China; D005787:Gene Frequency; D005819:Genetic Markers; D005838:Genotype; D006579:Heterozygote; D008098:Litter Size / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide; D011962:Receptors, FSH / Q000235:genetics*; D012756:Sheep
chemical_list: D055430:Bone Morphogenetic Protein 15; D005819:Genetic Markers; D011962:Receptors, FSH; D052005:Bone Morphogenetic Protein Receptors, Type I
keywords: BMP-15 gene; BMPR-IB gene; FSHR gene; Hu sheep; Small Tailed Han sheep; litter size