Data/hora: 01/06/2024 06:49:43

Biblioteca(s): | Embrapa Suínos e Aves.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 12/05/2017
Data da última atualização: | 18/12/2017
Autoria: | CORSO, J.; HEPP, D.; LEDUR, M. C.; PEIXOTO, J. de O.; FAGUNDES, N. J. R.; FREITAS, T. R. O.
Afiliação: | JOSMAEL CORSO, UFRGS/Departamento de Genética; DIEGO HEPP, IFRS/POA; MONICA CORREA LEDUR, CNPSA; JANE DE OLIVEIRA PEIXOTO, CNPSA; NELSON J. R. FAGUNDES, UFRGS/Departamento de Genética; THALES R. O. FREITAS, UFRGS/Departamento de Genética.
Título: | Genetic variation of the bronze locus (MC1R) in turkeys from Southern Brazil.
Ano de publicação: | 2017
Fonte/Imprenta: | Genetics and Molecular Biology, v. 40, n. 1, p. 104-108, 2017.
DOI: | http://dx.doi.org/10.1590/1678-4685-GMB-2016-0136
Idioma: | Inglês
Conteúdo: | Abstract: Domestic turkeys present several color phenotypes controlled by at least five genetic loci, but only one of these has been identified precisely: the bronze locus, which turned out to be the melanocortin-1 receptor (MC1R) gene. MC1R variation is important for breeders interested in maintaining or developing different color varieties. In this study, we sequenced most of the MC1R gene from 16 White Holland (the main commercial turkey variety) and 19 pigmented turkeys from southern Brazil with two purposes. The first was to describe the MC1R diversity in White Holland turkeys, which may serve as reservoirs of genetic diversity at this locus. The second was to test whether the traditional color classification used by Brazilian breeders is related to previously known MC1R alleles. White Holland turkeys had four different haplotypes corresponding to the bronze (b+) and black-winged bronze (b1) alleles. Pigmented turkeys also had four haplotypes corresponding to the b+ and b1 alleles, but different haplotypes represent the most common b+ allele in these two groups. The black (B) allele was absent from our samples. Overall, our results suggest that white and pigmented individuals form two different populations, and that the traditional color classification used by Brazilian breeders cannot accurately predict the genotypes at the bronze locus.
Palavras-Chave: | Ave.
Thesagro: | Melhoramento genético animal.
Thesaurus Nal: | Animal breeding; Turkeys.
Categoria do assunto: | --
Registro original: | Embrapa Suínos e Aves (CNPSA)
Exemplares: | CNPSA - (21043-1) - UPC - AP - DD -  -  -  - DIS