Additive and Dominance Effects of MC4R and PIT1 Polymorphisms on Production and Carcass Traits in Duroc Pigs

Date Received: Apr 13, 2022

Date Published: Dec 30, 2022

DOI: https://doi.org/10.31817/vjas.2022.5.4.03

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Issue: Vol. 5 No. 4 (2022): Vietnam Journal of Agricultural Sciences

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ANIMAL SCIENCE – VETERINARY MEDICINE – AQUACULTURE

How to Cite:

Bo, H., Hung, N., Manh, N., Vinh, N., & Luc, D. (2022). Additive and Dominance Effects of MC4R and PIT1 Polymorphisms on Production and Carcass Traits in Duroc Pigs. Vietnam Journal of Agricultural Sciences, 5(4), 1638–1644. https://doi.org/10.31817/vjas.2022.5.4.03

Additive and Dominance Effects of MC4R and PIT1 Polymorphisms on Production and Carcass Traits in Duroc Pigs

Ha Xuan Bo (*) 1 , Nguyen Van Hung 2 , Nguyen Xuan Manh 2 , Nguyen Thi Vinh 1   , Do Duc Luc 1

  • Corresponding author: hxbo@vnua.edu.vn
  • 1 Faculty of Animal Science, Vietnam National University of Agriculture, Hanoi 131000, Vietnam
  • 2 Dabaco Nucleus Breeding Pig Company, Bac Ninh 220000, Vietnam

    • Keywords

    MC4R, PIT1, polymorphisms, additive effect, Duroc pigs

    Abstract


    This study aimed to estimate the allelic and genotypic frequencies of single nucleotide polymorphisms (SNPs) of MC4R (melanocortin-4-receptor gene) and PIT1 (pituitary specific transcription factor-1) genes, and their additive dominance genetic effects on production and carcass traits in Duroc pigs. A total of 2170 tail tissue samples (1728 gilts and 442 male pigs) were collected from Dabaco Nucleus Breeding Pig Company, Bac Ninh province, Vietnam from January 2017 to June 2020. Polymorphisms in the MC4R and PIT1 genes were detected using the PCR-RFLP method. For MC4R, the frequencies of alleles A and G were 0.430 and 0.570, respectively. For PIT1, the frequencies of alleles A and B were 0.460 and 0.540, respectively. The genotype frequency distribution of the MC4R gene was in Hardy-Weinberg equilibrium (P = 0.375), but the genotype frequency distribution of PIT1 (P <0.001) was not. The MC4R and PIT1 polymorphisms were significantly associated with final body weight and average daily gain (P <0.001). Significant additive effects were also found (P <0.05) for the two traits. The selection of individuals with the MC4R genotype AA and PIT1 genotype AA could improve final body weight and average daily gain in Duroc pigs.

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