Maternal genetic diversity of the Red-faced sheep of Covasna based on the mtDNA control region

Mátyás, Enikő and Johanson, Pernille Lieng and Gáspárdy, András and Hudák, Péter and Wagenhoffer, Zsombor and Maróti-Agóts, Ákos (2024) Maternal genetic diversity of the Red-faced sheep of Covasna based on the mtDNA control region. DANUBIAN ANIMAL GENETIC RESOURCES, 9 (2). pp. 65-72. ISSN 2498-5910

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Abstract

One of the variants of the Tsigaisheep is the reddish-headed and -legged, small-sized, so-called Redface Covasna. In 2014, the Institute for Farm Animal Gene Preservation brought in a small herd of these from Transylvania with the aim of national conservation of the breed.The aim of the study is to characterize the maternal background and maternal genetic diversity of the Red-faced sheep of Covasna. For this, the nucleotide sequence of the control region (CR) of the mitochondrial genome (mtDNA) was used. The sampling was achieved from 34individuals 2021 and 2022.The length of the aligned CR sequences is 621 bp with the number of polymorphic base sites 88. The number of haplotypes is 30 (from haplogroups A and B, which proves its origin in Asia Minor). The value of haplotype diversity (Hd) is 0.991, and its variance is 0.010. The mean of the nucleotide diversity (π) and the average nucleotide difference per pair (k) in the investigated flock are 21.27*10-3and 13.21, respectively. The value of the Tajima D test (-1.4427, p > 0.10) does not indicate a lack of alleles, nor does it indicate a narrowing of the genetic diversity occurring in the history of the population.

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