1Indonesian Goat Research Center Sei Putih, North Sumatera 20585, Indonesia
2Faculty of Animal Science, Universitas Gadjah Mada, Yogyakarta 55281, Indonesia.
Correspondence to Dyah Maharani, E-mail: d.maharani@ugm.ac.id
Volume 3, Number 1, Pages 37-44, March 2019.
Journal of Animal Breeding and Genomics 2019, 3(1), 37-44. https://doi.org/10.12972/jabng.20190005
Received on 16 March, 2019, Revised on 20 March, 2019, Accepted on 30 May, 2019, Published on March 31, 2019.
Copyright © 2019 Korean Society of Animal Breeding and Genetics.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0).
A member of growth factor and a member of the transforming growth factor β superfamily, growth differentiation factor 9 (GDF9) has a critical role in prolificacy of sheep and goat. In this study, we analyzed exon 1 of the GDF9 gene in Indonesian goats. For this purpose, 77 blood samples representing nine Indonesian goat breeds (Gembrong, Senduro, Ettawa Grade, Boerawa, Boerka, Kosta, Samosir, Boer, and Kacang) were collected. An exonic region of GDF9 gene, 462 bp in length, was amplified using specific primers. Two single nucleotide polymorphisms (SNPs); SNP g.306G>A and SNP g.228C>A, were identified based on reference and direct sequencing, respectively. SNP g.306G>A was used to genotype all animals using RFLP method with HhaI restriction enzyme. The results revealed an absence of polymorphism of GDF9 gene at SNP g.306G>A in all animals investigated. Further study on SNP g. 228C>A showed polymorphism of GDF9 gene in all Indonesia goats except Senduro, Ettawa Grade, Boerawa and Samosir goats. In average, the frequency of C allele (88%) is higher than A allele (12%), followed by CC (77%) and CA (23%) genotypes. However, in Boer goat, the CA genotype (75%) is higher than CC genotype (25%). These population was not deviated from Hardy Weinberg Equilibrium (P>0.05) based on SNP g.228C>A. In conclusion, SNP g.228C>A might be suggested as a tool for Indonesian goat marker selection based on the gene encoding prolificacy trait.
Growth Differentiation Factor (GDF9) gene, Indonesian Goat, Prolificacy
This work was financially supported by the Indonesian Ministry of Research, Technology and Higher Education (RISTEKDIKTI) with contract No.1713/UN1-PIII/DIT-LIT/LT/2018. Special thanks is also addressed to Retno Setyawati in The Laboratory of Animal Breeding and Genetics, Faculty of Animal Science, Universitas Gadjah Mada, and the research team in Indonesia Goat Research Center at Sei Putih for aiding samples collection and laboratory work.