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http://dx.doi.org/10.5352/JLS.2020.30.1.58

Association of Melanocortin 4 Receptor (MC4R) Genotypes with Fatty Acid Compositions in an Intercross Population between Duroc and Jeju Native Pigs  

Kang, Yong-Jun (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Kim, Sang-Geum (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Kim, Su-Yeon (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Shin, Moon-Cheol (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Woo, Jae-Hoon (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Kim, Nam-Young (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Shin, Sang-Min (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Choi, Jae-Young (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Yoo, Ji-Hyun (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Park, Nam-Geon (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Yang, Byoung-Chul (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Cho, In-Cheol (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
Publication Information
Journal of Life Science / v.30, no.1, 2020 , pp. 58-63 More about this Journal
Abstract
This study was conducted to examine association between melanocortin-4-receptor (MC4R) genotypes and fatty acid (FA) composition in an F2 intercross between Duroc and Jeju (South Korea) Native pigs (JNP). Fourteen FA composition traits were measured in more than 290 F2 progeny population produced between Duroc and JNP. All experimental pigs were successfully genotyped for the MC4R c.1426A>G (p.Asp298Asn) single nucleotide polymorphism (SNP) by using Taq I PCR-RFLP methods. We detected three MC4R genotypes, AA, AG, and GG with 0.299, 0.542, and 0.159 genotype frequencies, respectively. The MC4R AA genotype animals showed higher levels in palmitic acid (C16:0, p<0.05), stearic acid (C18:0, p<0.01), eicosenoic acid (C20:1n9, p<0.05), saturated fatty acid (SFA, p<0.01) than GG homozygotes, respectively. Whereas MC4R GG genotype showed higher values in linoleic acid (C18:2n6, p<0.001), linolenic acid (C18:3n3, p<0.001), linolenic acid (C18:3n6, p<0.001), arachidonic acid (C20:4n6, p<0.001) and unsaturated fatty acid (USFA, p<0.01) than AA pigs, respectively. The MC4R GG genotype was associated with increasing USFA and decreasing SFA in the F2 progeny population produced between Duroc and JNP. Our finding suggests that the MC4R polymorphisms can be used as a valuable genetic marker for Duroc and JNP breeding programs to improve meat quality and to control FA compositions.
Keywords
Association; fatty acid; genotype; Jeju native pig; MC4R;
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