Genetic origin of donkeys in Brazil.

Autor: Alves JS; Escola de Medicina Veterinária E Zootecnia, Departamento de Zootecnia, Universidade Federal da Bahia, Avenida Milton Santos, 500, Ondina, Salvador, Bahia, 40170-110, Brazil., de Araujo Oliveira CA; Escola de Medicina Veterinária E Zootecnia, Departamento de Zootecnia, Universidade Federal da Bahia, Avenida Milton Santos, 500, Ondina, Salvador, Bahia, 40170-110, Brazil., Escodro PB; Centro de Engenharias e Ciências Agrárias, Universidade Federal de Alagoas, Rio Largo, Alagoas, Brazil., Pinto LFB; Escola de Medicina Veterinária E Zootecnia, Departamento de Zootecnia, Universidade Federal da Bahia, Avenida Milton Santos, 500, Ondina, Salvador, Bahia, 40170-110, Brazil., Costa RB; Escola de Medicina Veterinária E Zootecnia, Departamento de Zootecnia, Universidade Federal da Bahia, Avenida Milton Santos, 500, Ondina, Salvador, Bahia, 40170-110, Brazil., de Camargo GMF; Escola de Medicina Veterinária E Zootecnia, Departamento de Zootecnia, Universidade Federal da Bahia, Avenida Milton Santos, 500, Ondina, Salvador, Bahia, 40170-110, Brazil. gregorio.camargo@ufba.br.
Jazyk: angličtina
Zdroj: Tropical animal health and production [Trop Anim Health Prod] 2022 Sep 12; Vol. 54 (5), pp. 291. Date of Electronic Publication: 2022 Sep 12.
DOI: 10.1007/s11250-022-03280-x
Abstrakt: Introduction: The genetic groups of native donkeys in Brazil are characterized by adaptation to the local environment. However, the donkey population in the country is declining, mainly because of agricultural mechanization and transportation that has led to the abandonment and the consequent indiscriminate slaughter of these animals. There are three local genetic groups of distinct geographic and temporal formation. However, analyses of their origin, phylogenetic relationship, and population structure are scarce. Within this context, molecular markers such as the mitochondrial control region (D-loop) are useful for these analyses.
Material and Methods: This study aimed to evaluate the variation and origin of maternal lineages of groups of naturalized donkeys in Brazil (Brazilian, Nordestino, and Pêga).
Results and Discussion: We detected five mitochondrial haplotypes with 19 polymorphic sites, two of them exclusively found in the Nordestino donkey; this group is in fact more distant from the others. Phylogenetic analysis indicates maternal contributions of two clades (Nubian and Somali) to the formation of the genetic groups of donkeys, a fact that explains the high diversity, structure, and distances of the groups, reported here for the first time. CONCLUSION : This analysis contributes production and conservation of native donkey breeds. It also gives clues about the formation of the Iberian breeds from which Brazilian donkeys originated.
(© 2022. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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