Genetic diversity of the Brazilian Creole cattle Pé-duro assessed by microsatellites and mitochondrial DNA
AUTOR(ES)
Oliveira, Ana Paula Ferreira de, Carvalho, José Herculano de, Miretti, Marcos Mateo, Lara, Maria Aparecida Cassiano, Contel, Eucleia Primo Betioli
FONTE
R. Bras. Zootec.
DATA DE PUBLICAÇÃO
2012-11
RESUMO
The objective of this study was to describe the genetic diversity and structure of the largest Pé-duro population by assessing variation at ten autosomal microsatellite (STR) loci and mitochondrial DNA (mtDNA) sequences. The mean expected heterozygosity was 0.755, the mean observed heterozygosity was 0.600 and significant inbreeding coefficient (Fis) and deviations from the Hardy-Weinberg equilibrium in most of analyzed loci demonstrate the impact of inbreeding and homozygosis on this population. A more in-depth genetic analysis could be achieved by expanding the STR list. The analysis of mtDNA provided evidence of ancestral African taurine haplotypes in Pé-duro and excluded maternal Zebuine introgression. In this report, the main Pé-duro population is genetically portrayed by sampling approximately 40% of it. As this herd represents the core of the Pé-duro conservation program, these findings are of outstanding value for the management and preservation of this Brazilian 'native' cattle breed.
Documentos Relacionados
- Caracterização genética de uma população do gado crioulo Pé-duro do Piauí, através de marcadores microssatélites
- Conservacao do gado pe-duro (curraleiro).
- Conservação do bovino pé-duro ou curraleiro: situação atual.
- Pé-Duro: the local cattle from semiarid areas of Brazil.
- Polimorfismo do cromossomo y no plantel de gado pe-duro da EMBRAPA/PI