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Ianella P, Albuquerque MSM, Paiva SR, et al. D-loop haplotype diversity in Brazilian horse breeds. Genet Mol Biol. 2017;40(3):604-609doi: 10.1590/1678-4685-GMB-2016-0166.
Ianella, P., Albuquerque, M. S. M., Paiva, S. R., Egito, A. A., Almeida, L. D., Sereno, F. T. P. S., Carvalho, L. F. R., Mariante, A. S., & McManus, C. M. (2017). D-loop haplotype diversity in Brazilian horse breeds. Genetics and molecular biology, 40(3), 604-609. https://doi.org/10.1590/1678-4685-GMB-2016-0166
Ianella, Patrícia, et al. "D-loop haplotype diversity in Brazilian horse breeds." Genetics and molecular biology vol. 40,3 (2017): 604-609. doi: https://doi.org/10.1590/1678-4685-GMB-2016-0166
Ianella P, Albuquerque MSM, Paiva SR, Egito AA, Almeida LD, Sereno FTPS, Carvalho LFR, Mariante AS, McManus CM. D-loop haplotype diversity in Brazilian horse breeds. Genet Mol Biol. 2017 Jul-Sep;40(3):604-609. doi: 10.1590/1678-4685-GMB-2016-0166. Epub 2017 Aug 31. PMID: 28863209; PMCID: PMC5596364.
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Genet Mol Biol. 2017 Jul-Sep;40(3):604-609. doi: 10.1590/1678-4685-GMB-2016-0166. Epub 2017 Aug 31.

D-loop haplotype diversity in Brazilian horse breeds.

Genetics and molecular biology

Patrícia Ianella, Maria do Socorro Maués Albuquerque, Samuel Rezende Paiva, Andréa Alves do Egito, Leonardo Daniel Almeida, Fabiana T P S Sereno, Luiz Felipe Ramos Carvalho, Arthur da Silva Mariante, Concepta Margaret McManus

Affiliations

  1. Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica, Brasília, DF, Brazil.
  2. Embrapa Gado de Corte, Campo Grande, MS, Brazil.
  3. Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Darcy Ribeiro, Brasília, DF, Brazil.
  4. Ministério da Agricultura, Pecuária e Abastecimento, Brasília, DF, Brazil.

PMID: 28863209 PMCID: PMC5596364 DOI: 10.1590/1678-4685-GMB-2016-0166

Abstract

The first horses were brought to Brazil by the colonizers after 1534. Over the centuries, these animals evolved and adapted to local environmental conditions usually unsuitable for exotic breeds, thereby originating locally adapted Brazilian breeds. The present work represents the first description of maternal genetic diversity in these horse breeds based on D-loop sequences. A D-Loop HSV-I fragment of 252 bp, from 141 horses belonging to ten Brazilian breeds / genetic groups (locally adapted and specialized breeds) were analysed. Thirty-five different haplotypes belonging to 18 haplogroups were identified with 33 polymorphic sites. Haplotype diversity (varying from 0.20 to 0.96) and nucleotide diversity (varying from 0.0039 to 0.0239) was lower for locally adapted than for specialized breeds, with the same pattern observed for FST values. Haplogroups identified in Brazilian breeds are in agreement with previous findings in South American samples. The low variability observed mainly in locally adapted breeds, indicates that, to ensure conservation of these breeds, careful reproductive management is needed. Additional genetic characterization studies are required to support accurate decision-making.

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