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. 2020 May 29;43(2):e20190054.
doi: 10.1590/1678-4685-GMB-2019-0054. eCollection 2020.

Importance of naturalized breeds as a base for the formation of exotic sheep (Ovis aries) breeds in tropical altitude regions

Joyce Azambuja de Oliveira  1 , Andrea Alves do Egito  2 , Bruno do Amaral Crispim  1 , Fernando Miranda de Vargas Junior  3 , Leonardo de Oliveira Seno  3 , Alexeia Barufatti  1
Affiliations

Importance of naturalized breeds as a base for the formation of exotic sheep (Ovis aries) breeds in tropical altitude regions

Joyce Azambuja de Oliveira et al. Genet Mol Biol. .

Abstract

Recent molecular tools and technologies have marked the discovery of the origin and domestication processes of a wide variety of species, using either genomic or mitochondrial molecular markers to provide input for selection programs, as well as the management and conservation of animal breeds. This study aimed to analyze genes of mitochondrial DNA of the following sheep (Ovis aries) breeds: Pantaneira, Bergamácia, Dorper, White Dorper, Ile de France and Hampshire Down, to obtain their population genetic parameters and investigate the origin of these sheep populations reared in the State of Mato Grosso do Sul. The analysis of mitochondrial DNA allowed to infer their phylogenetic relationships and revealed significant differences among them when compared with each other and with sequences obtained from GenBank. Through the formation of haplotypes, it was noted that the Pantaneira breed served as the maternal basis for the formation of the other breeds reared in the region, and it was possible to suggest a European origin for the sheep populations studied.

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Conflict of interest statement

Conflicts of Interest: The authors have no conflicts of interest to declare.

Figures

Figure 1
Figure 1. Network formed by the Median-Joining method, demonstrating the 24 haplotypes found for the different mtDNA genes in the GenBank reference sequences (A, B, C, D and E) and the State of Mato Grosso do Sul populations. The areas of the haplotype circles are proportional to their frequency. Line length is related to mutational steps separating each haplotype. The white dots are mean vectors representing hypothetical haplotypes introduced by the algorithm.
Figure 2
Figure 2. Median-joining network showing the 19 haplotypes found with different mtDNA genes for populations of the State of Mato Grosso do Sul. The areas of the haplotype circles are proportional to their frequency. Line length is related to mutational steps separating each haplotype. The white dots are mean vectors representing hypothetical haplotypes introduced by the algorithm.
See this image and copyright information in PMC

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Internet Resources

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