Aromatase gene and its effects on growth, reproductive and material ability traits in a multibreed sheep from Brazil.

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dc.contributorANA MARIA BEZERRA OLIVEIRA LÔBO, UNIVERSIDADE FEDERAL DE VIÇOSA
dc.contributorRAIMUNDO NONATO BRAGA LÔBO, CNPC
dc.contributorSAMUEL REZENDE PAIVA, CENARGEN.
dc.creatorLÔBO, A. M. B. O.
dc.creatorLÔBO, R. N. B.
dc.creatorPAIVA, S. R.
dc.date2023-07-11T10:24:11Z
dc.date2023-07-11T10:24:11Z
dc.date2009-09-24
dc.date2009
dc.date.accessioned2026-07-01T00:22:40Z
dc.descriptionAbstract: We determined the polymorphism C242T of the aromatase gene (Cyp19) and its allelic frequency, as well as the effect of the variants on productive and reproductive traits in 71 purebred Santa Inês sheep, 13 purebred Brazilian Somali sheep, nine purebred Poll Dorset sheep, and 18 crossbred 1/2 Dorper sheep. The animals were genotyped using the PCR-RFLP technique. The influence of the animal's genotype on its performance or on the performance of its lambs was analyzed by the least square method. Another factor assessed was the importance of the animal's genotype in analysis models for quantitative breeding value estimates, and whether there were differences among the averages of breeding values of animals with different genotypes for this gene. In the sample studied, no AA individuals were observed; the AB and BB frequencies were 0.64 and 0.36, respectively. All Brazilian Somali sheep were of genotype BB. All 1/2 Dorper BB animals presented a lower age at first lambing, and the Santa Inês BB ewes presented a lower lambing interval. In these same genetic groups, AB ewes presented higher litter weight at weaning. This is evidence that BB ewes have a better reproductive performance phenotype, whereas AB ewes present a better maternal ability phenotype. However, in general, animals with genotype AB presented better average breeding values than those with genotype BB.
dc.identifierGenetics and Molecular Biology, v. 32, n. 3, p. 484-490, 2009.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/534365
dc.identifierhttp://dx.doi.org/10.1590/S1415-47572009005000054
dc.identifier.urihttp://hdl.handle.net/123456789/402910
dc.languageeng
dc.rightsopenAccess
dc.subjectPeso corporal
dc.subjectPCR-RFLP
dc.subjectSNP
dc.subjectBrasil
dc.subjectLambing interval
dc.subjectOvino
dc.subjectPolimorfismo Genético
dc.subjectSheep
dc.subjectBody weight
dc.subjectLitter weight
dc.subjectPolymorphism
dc.subjectGenetic polymorphism
dc.subjectGenotype
dc.subjectBrazil
dc.subjectGenetic variation
dc.subjectAnimal genetics
dc.titleAromatase gene and its effects on growth, reproductive and material ability traits in a multibreed sheep from Brazil.
dc.typeArtigo de periódico

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