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KMID : 1025520120540040255
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Journal of Animal Science and Technology
2012 Volume.54 No. 4 p.255 ~ p.265
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MC1R Genotypes, Coat Color, and Muzzle Phenotype Variation in Korean Native Brindle Cattle
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Park Jae-Hee
Lee Hae-Lee
Kim Yong-Su
Kim Jong-Gug
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Abstract
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The objectives of this study were to investigate MC1R genotype, coat color, and muzzle phenotype variationsin the Korean native brindle cattle(KNBC) maintaining family lines and to establish the mating system for increased brindle coat color appearance. KNBC with genotype and phenotype records were selected as experimental animals. The relationship between melanocortin 1 receptor(MC1R) genotypes, verified by PCR-RFLP, and brindle coat color appearance was determined. Fragments of the MC1R gene amplified by PCR were digested with MspI and RFLP was determined. KNBC had E+E+, E+e, and ee genotypes. The E+e genotype was most common with 65%, compared to E+E+(33.33%), or ee(1.67%). When the sire had E+e genotype and the dam had E+E+ genotype, and both of them had the whole body-brindle coat color, all of their offspring(4/4) had whole body-brindle coat color. When the sire had E+E+ genotype and the dam had E+e genotype, and both had whole body-brindle coat color, 44.44%(4/9) of the offspring had whole body-brindle coat color. The mating between the sires and dams with these two genotypes with whole body-brindle coat color may have the highest whole body-brindle coat color appearance in their offspring. Muzzle grades 3 or 4 were more common than other muzzle grades. This is the first report indicating the segregation of MC1R genotypes and the inheritance of coat color through family lines in KNBC. The mating system proposed from this study may increase the possibility of brindle coat color appearance in KNBC.
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KEYWORD
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Korean native brindle cattle, Brindle coat color, PCR-RFLP, MC1R gene, MspI
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