• Title/Summary/Keyword: Asian Animal Science

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Genetic Diversity Analysis of South and East Asian Duck Populations Using Highly Polymorphic Microsatellite Markers

  • Seo, Dongwon;Bhuiyan, Md. Shamsul Alam;Sultana, Hasina;Heo, Jung Min;Lee, Jun Heon
    • Asian-Australasian Journal of Animal Sciences
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    • v.29 no.4
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    • pp.471-478
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    • 2016

  • Native duck populations have lower productivity, and have not been developed as much as commercials duck breeds. However, native ducks have more importance in terms of genetic diversity and potentially valuable economic traits. For this reason, population discriminable genetic markers are needed for conservation and development of native ducks. In this study, 24 highly polymorphic microsatellite (MS) markers were investigated using commercial ducks and native East and South Asian ducks. The average polymorphic information content (PIC) value for all MS markers was 0.584, indicating high discrimination power. All populations were discriminated using 14 highly polymorphic MS markers by genetic distance and phylogenetic analysis. The results indicated that there were close genetic relationships among populations. In the structure analysis, East Asian ducks shared more haplotypes with commercial ducks than South Asian ducks, and they had more independent haplotypes than others did. These results will provide useful information for genetic diversity studies in ducks and for the development of duck traceability systems in the market.

  • https://doi.org/10.5713/ajas.15.0915 인용 PDF KSCI

Identification of polymorphisms in MITF and DCT genes and their associations with plumage colors in Asian duck breeds

  • Sultana, Hasina;Seo, Dongwon;Choi, Nu-Ri;Bhuiyan, Md. Shamsul Alam;Lee, Seung Hwan;Heo, Kang-Nyeong;Lee, Jun-Heon
    • Asian-Australasian Journal of Animal Sciences
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    • v.31 no.2
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    • pp.180-188
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    • 2018

  • Objective: The aim of this study was to investigate the effect of single nucleotide polymorphisms (SNPs) of the melanogenesis associated transcription factor (MITF) and dopachrome tautomerase (DCT) genes on plumage coloration in Asian native duck breeds. MITF encodes a protein for microphthalmia-associated transcription factor, which regulates the development and function of melanocytes for pigmentation of skin, hair, and eyes. Among the tyrosinase-related family genes, DCT is a pigment cell-specific gene that plays important roles in the melanin synthesis pathway and the expression of skin, feather, and retina color. Methods: Five Asian duck varieties (black Korean native, white Korean native, commercial Peking, Nageswari, and Bangladeshi Deshi white ducks) were investigated to examine the polymorphisms associated with plumage colors. Among previously identified SNPs, three synonymous SNPs and one indel of MITF and nine SNPs in exon regions of DCT were genotyped. The allele frequencies for SNPs of the black and white plumage color populations were estimated and Fisher's exact test was conducted to assess the association between the allele frequencies of these two populations. Results: Two synonymous SNPs (c.114T>G and c.147T>C) and a 14-bp indel (GCTGCAAAC AGATG) in intron 7 of MITF were significantly associated with the black- and white-colored breeds (p<0.001). One non-synonymous SNP [c.938A>G (p.His313Arg)] in DCT, was highly significantly associated (p<0.001) and a synonymous SNP (c.753A>G) was significantly associated (p<0.05) with black and white color plumage in the studied duck populations. Conclusion: The results of this study provide a basis for further investigations of the associations between polymorphisms and plumage color phenotypes in Asian duck breeds.

  • https://doi.org/10.5713/ajas.17.0298 인용 PDF KSCI

Insertional Variations of Two Porcine Endogenous Retroviruses (PERVs) in Korean Native Pigs and Asian Wild Boars

  • Jung, K.C.;Yu, S.L.;Kim, T.H.;Jeon, J.T.;Rogel-Gaillard, C.;Park, C.S.;Jin, D.I.;Moran, C.;Lee, J.H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.20 no.4
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    • pp.461-465
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    • 2007

  • Porcine Endogenous Retroviruses (PERVs) are a major concern in relation to xenotransplantation. Previous research indicated that PERVs are present at about 50 copies in the pig genome and their chromosomal insertion sites are different among pig breeds. We examined nine Korean native pigs and seven Asian Wild Boars for the presence of a PERV-A at SSC 1q2.4 and a PERV-B at SSC 7p1.1-2 previously reported in a Large White pig. The PERV-B at locus 7p1.1-2 displayed insertional variability in Korean native pigs and Asian Wild Boars. Using the primers for the PERV-A at 1q2.4 from Large White pig, we only can amplify an unclassified 798 bp sequence, which showed insertional variability only in Korean native pigs. This study indicates that there are differences within and between Asian and European pigs in PERV insertions and suggests that selection could generate PERV-free lines of pigs more suitable for xenotransplantation.

  • https://doi.org/10.5713/ajas.2007.461 인용 PDF KSCI