Identification of Partial GDF9 Gene for Genotyping Bligon Goats and Its Origin
Abstract
GDF9, a peptide in the TGF-β growth factor family, plays a crucial role in oocyte growth and maturation, affecting reproduction through genetic factors. This makes it valuable for livestock selection via SNPs, which are used in genotyping methods like PCR-RFLP. This study aimed to identify SNPs, map restriction enzyme sites, and perform genotyping to explore reproductive traits in Bligon goats. A total of 91 female goats were analysed, including 36 Bligon goats, 26 Peranakan Etawa goats, and 29 Kacang goats, and all of them had single births. PCR amplification was conducted using two pairs of primers for the GDF9 gene: the forward primer 5'-CTCCTCTTGAGCCTCTGGTG-3' and reverse primer 5'-TCCAGTTGTCCCACTTCAGC-3' for GDF9-3, and forward primer 5'-TGTAAGATCGTCCCGTCACC-3' and reverse primer 5'-CACACTTCCTCTCCCTCTCA-3' for GDF9-6. Sequencing was done after amplification. Six SNPs were identified at positions g.2565C>M, g.2589G>A, g.2634G>A, g.2653G>T, g.2679A>G, and g.2691A>G, with one being synonymous (g.2653G>T) and five non-synonymous, causing amino acid changes. Among these, g.2565C>M was recognized by the restriction enzymes HpaII and MspI, was recommended for use in PCR-RFLP for genotyping with the GDF9-3 primer. The study also found that the genotype frequencies in Bligon, Peranakan Etawa, and Kacang goats were in Hardy-Weinberg equilibrium (HWE), supporting the use of SNP g.2565C>M as a genetic marker. Enzym MspI can be used for genotyping the target gene in exon 2 of the GDF9 gene in three types of goats: Bligon, Peranakan Etawa, and Kacang.
References
Ahlawat, S. et al., 2015a. Review article: Current status of molecular genetics research of goat fecundity. Small Ruminant Research, 125, pp.34-42. doi; 10.1016/j.smallrumres.2015.01.027
Ahlawat, S. et al., 2015b. Association analysis of novel SNPs in BMPR1B, BMP15 and GDF9 genes with reproductive traits in Black Bengal goats. Small Ruminant Research, 132(1), pp.92-98. doi: 10.1080/10495398.2016.1167706.
Albakri, M.W. & Hartatik, T., 2021. Restriction mapping of melanocortin 4 receptor in Bos taurus and Bos indicus based on genbank data. Research Journal of Biotechnology, 16(1), pp.100–105.
Arta, P.D. & Rahayu, S., 2013. Analysis of Growth Differentiation Factor 9 (GDF-9) gene polymorphism and its relationship with the success of artificial insemination in PO cattle. Journal of Biotropika, 1(3), pp.95-100.
Chairunissa, F.A., Bintara, S. & Hartarik, T., 2022. Single nucleotide polymorphism of partial GDF9 Gene in three local goats of Indonesia compared with several goats in Asia. Bulletin of Animal Science, 46(1), pp.41-45. doi: 10.21059/buletinpeternak.v46i1.67188.
Du, Z.Y. et al., 2008. Study on the polymorphisms of exon 2 of GDF9 gene in Guizhou White goat. Animal Husbandry & Veterinary Medicine, 40(1), pp.46–48.
Feng, T. et al., 2011. Polymorphisms of caprine GDF9 gene and their association with litter size in Jining Grey goats. Molecular Biology Reports, 38, pp.5189–5197. doi: 10.1007/s11033-010-0669-y.
Ghoreishi, H. et al., 2019. Identification of mutations in BMP15 and GDF9 genes associated with prolificacy of Markhoz goats. Archives Animal Breeding, 62, pp.565–570. doi: 10.5194/aab-62-565-2019.
Ginting, S.P, 2009. Prospek pengunaan pakan kompllit pada kambing: Tinjauan manfaat dan aspek bentuk fisik pakan serta respon ternak. Loka Penelitian Kambing Potong, Sumatra Utara.
Hartatik, T. et al., 2023. Mutation Analysis and Restriction Site Mapping of GDF9 in Indonesian Bligon Goat. Tropical Animal Science Journal, 46(2), pp.163-171. doi: 10.5398/tasj.2023.46.2.163.
Hossain, F., Sharmin, A.S. & Mohammad, S.A.B., 2020. Association of GDF9 gene polymorphisms with litter size in indigenous sheep of Bangladesh. Research Agriculture Livestock Fisheries, 7(1), pp.283-292. doi: 10.3329/ralf.v7i2.48871.
Irawan, A. et al., 2024. Nutrient Digestibility, N Balance, Performance, and Blood Parameters of Kacang Goats Differing in GDF9 Genotype Fed Different Sources of Dietary Fiber. Tropical Animal Science Journal, 47(1), pp.33-41.
Jia, X. et al., 2015. GDF9 gene polymorphisms and its association with reproductive traits in livestock species. Animal Reproduction Science, 159(1), pp.45-53.
Kim, S., Park, J. & Lee, H., 2023. Combining SNP genotyping with PCR-RFLP: A tool for marker-assisted selection in animal breeding. Animal Genetics, 54(3), pp.244-253.
Liu, Y. & Chen, Z., 2020. Application of PCR-RFLP for detecting SNP markers in livestock breeding. Livestock Science, 234(1), pp.45-51.
Perdana, Y.C., 2022. Identifikasi keragaman koding sekuen Gen MC4R (target III) serta hubunganya terhadap berat dan ukuran tubuh pada sapi persilangan tiga bangsa. Universitas Gadjah Mada.
Perdana, Y. C. & Hartatik, T., 2022. Restriction mapping of MC4R gene on Bali Cattle (Bos sondaicus) as genetic marker for breeding program in compared to Bos taurus and Bos indicus. Journal of Tropical Biodiversity and Biotechnology, 7(2), jtbb67636. doi: 10.22146/jtbb.67636.
Prihandini P.W & Maharani, D. 2019. Melanocortin-4 receptor (MC4R) gene is the main gene for Fast Growth Selection in Beef Cattle. Wartazoa, 29(2), pp.85-96. doi: 10.14710/jab.v%25vi%25i.20880.
Sarwono., 2011. Beternak kambing unggul, Jakarta: Penebar Swadaya.
Wang, L. et al., 2018. Impact of SNPs in the GDF9 gene on reproductive traits in goats. Animal Reproduction Science, 195(1), pp.77-85.
Wang, X., Liu, H. & Zhang, X., 2021. Identification of SNP markers associated with growth traits in livestock using PCR-RFLP. Journal of Animal Science and Biotechnology, 12(1), pp.35-42.
Warwick, E.J., Astuti, J.M. & Hardjosubroto, W., 1990. Pemuliaan Ternak, Yogyakarta, Indonesia: Universitas Gadjah Mada Press..
Wouobeng, P. et al., 2020. Polymorphism of prolificacy genes (BMP15, BMPR1B, and GDF9) in the native goat (Capra hircus) of Cameroon. Genetics & Biodiversity Journal, 4(1), pp.28-43. doi: 10.46325/gabj.v4i1.69.
Zhao, L. et al., 2016. Rac1 modulates the formation of primordial follicles by facilitating STAT3-directed Jagged1, GDF9 and BMP15 transcription in mice. Scientific Reports, 6, 23972. doi: 10.1038/srep23972.
Zhu, Y. et al., 2013. Comparison of SNPs in the GDF9 gene in different goat breeds. Journal of Animal Science, 91(9), pp.4234-4241.

