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Yak is an ancient breed and Bazhou Yak is also one of China's unique yak breed resources. In the present study, its complete mitochondrial genome was assembled from Illumina sequencing data and we identified the complete mitochondrial genome of the Bazhou yak (Bos grunniens). The complete mitochondrial DNA is a circular molecule with 16,325 bp length consisting of 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes, and a non-coding control region (D-loop). The overall nucleotide composition is A (33.69%), T (27.30%), C (25.79%), and G (13.22%), respectively. The content of C + G is 39.01%. Phylogenetic analysis of the mitochondrial genomes of 15 related species by MEGA7.0 showed that the genetic relationship of Bazhou yak is closer to Datong yak and polled yak. [ABSTRACT FROM AUTHOR]

Jialuo sheep is one of the important production materials of herdsmen in the pastoral areas of northwestern Sichuan in China. We reported the complete mitogenome of Jialuo sheep for the first time. It is 16,617 bp in length, containing 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and a control region (D-loop). In the evolutionary relationship, the mitogenome of Jialuo sheep is closer to Texel sheep. This report will help the further studies of sheep species classification and resource protection. [ABSTRACT FROM AUTHOR]

Maiwa yak is a unique local strain of yak breed resource in China. The complete mitochondrial genome was identified in this work. The mitochondrial DNA is a circular molecule with 16,324 bp in length, including 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes, and a non-coding control region(D-loop). The overall nucleotide ratio is A (33.70%), G (13.22%), T (27.26%), C (25.82%) with a C + G content of 39.04%. Phylogenetic analysis of mitochondrial genomes of 17 close species using MEGA7.0 showed that Maiwa yak is most related to Pali yak and polled yak. [ABSTRACT FROM AUTHOR]