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Arq. bras. med. vet. zootec ; 59(3): 805-809, jun. 2007. ilus, tab
Article in Portuguese | LILACS | ID: lil-461170

ABSTRACT

Identificou-se e determinou-se a freqüência do gene miostatina (GDF-8) normal e mutante em rebanhos Marchigiana, em 377 bovinos da raça Marchigiana, criados nos estados de São Paulo e Paraná. Identificaram-se 37,9 por cento de animais normais, 55,2 por cento de portadores e 6,9 por cento homozigotos afetados para musculatura dupla. Estes resultados indicam que os criadores têm interesse na característica musculatura dupla, promovendo, ainda que aleatoriamente, selecão a favor da mutação.


The frequency of the normal myostatin gene (GDF-8) and the mutant allele in Marchigiana herds was detected. Three hundred and seventy-seven animals of Marchigiana breed raised in São Paulo and Paraná States, Brazil, were tested. The results showed that 37.9 percent were homozygous normal animals, 55.2 percent heterozygous and 6.9 percent homozygous double muscling. The results suggest the interest of the breeders in having interest in the character double muscling, randomly promoting, the selection in favor of the mutation.


Subject(s)
Animals , Cattle , Gene Frequency , Muscle Development , Mutation/genetics , Polymerase Chain Reaction/methods
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