Associations of mtDNA haplotypes with productive traits in pigs

• Published in: Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Scienze fisiche e naturali Vol. 30; no. 4; pp. 807 - 813
• Main Authors: Kolosova, Maria A., Getmantseva, Lubov V., Bakoev, Siroj Yu, Kolosov, Anatoly Yu, Bakoev, Nekruz F., Shevtsova, Varvara S., Lyashenko, Elena N., Kostyunina, Olga V.
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.12.2019; Springer Nature B.V
• Subjects: Animal husbandry; Biomedicine; Earth and Environmental Science; Earth Sciences; Environment; Genomes; Haplotypes; History of Science; Hogs; Life Sciences; Livestock breeding; Meat; Mitochondria; Mitochondrial DNA; Productivity; Swine; Variance analysis; Haplotypes; Pigs; Percent Meat; Muscle Depth; mtDNA; Productive traits; D-loop
• ISSN: 2037-4631; 1720-0776
• DOI: 10.1007/s12210-019-00853-1

The mitochondrial genome plays an important role in energy production and cells functions control. Therefore, it can affect the traits which are significant for selection of farm animals. The published data allow assuming that the mtDNA variability in pigs is one of the ways to assess and predict the breeding and productive qualities. The aim of our work was to determine the mtDNA haplotypes by the D-loop region sequencing and evaluate their associations with the selection features in pigs. Studies were carried out on landrace sows ( n  = 2626) bred in the Russian Federation. We estimated the Muscle Depth and the Percent Meat. As a result, three mtDNA haplogroups (C, D, and E) were identified. In the studied group of pigs, haplotype E was determined in 1378 sows (52.5%) and had the highest frequency. Haplotype D was detected in 1064 sows (40.6%). In general, haplotypes of European origin were more common in our population. Among the haplotypes of Asian origin (including A, B, and C), only haplotype C was identified in our group of pigs. It was determined in 182 sows (6.9%). Haplotypes A and B were not identified. Analysis of variance (ANOVA) has demonstrated the significance of differences in the haplotypes of the mtDNA regarding the studied traits of meat productivity in sows. These facts confirm the prospects of mtDNA studies as determinants of pig productivity. Our results have shown that some haplotypes of mtDNA are largely related to phenotypic traits.