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| Goats are preferred as a source of good quality meat and milk. Their production efficiency can be improved and increased by introducing highly fecundity goats. The aim of this study was to investigate the polymorphism of BMP15 fecundity gene by PCR-RFLP and single nucleotide polymorphism (SNP) in four goat breeds in Egypt (Zaraibi, Baladi, Damascus, and Alpine) and their association with litter size. The genomic DNA was extracted from the whole blood, and 141 base pair fragment encoding BMP15 exon 2 was amplified, purified and sequenced. The sequencing data analysis revealed four SNPs for high litter size does and three SNPs in low litter size. Three SNPs in BMP15 exon 2 at nucleotide position 757 A>C, 762 G>A and 769 G>C in Alpine, Zaraibi, and Baladi respectively. These nucleotide changes associated with amino acid substitution. Furthermore, one novel non-synonymous mutation has been detected in all higher litter size studied goat breeds and lead to change amino acid where Glutamic acid>Glutamine. The SNPs and amino acid substitutions were detected and repeated in higher and lower litter size animals, which can be used as marker-assisted selection for both traits in the four goat breeds under study.

Genetic Improvement of Litter Size in Four Goat Breeds in Egypt Using Polymorphism in Bone Morphogenetic Protein 15 Gene