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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
24/09/2009 |
Data da última atualização: |
26/01/2010 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
LÔBO, A. M. B. O.; LÔBO, R. N. B.; PAIVA, S. R. |
Afiliação: |
Ana Maria Bezerra Oliveira Lôbo, pós-graduanda UFV; Raimundo Nonato Braga Lôbo, Embrapa Caprinos e Ovinos (CNPC); Samuel Rezende Paiva, Embrapa Recursos Genéticos e Biotecnologia. |
Título: |
Aromatase gene and its effects on growth, reproductive and material ability traits in a multibreed sheep from Brazil. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
Genetics and Molecular Biology, v. 32, n. 3, p. 484-490, 2009. |
Idioma: |
Inglês |
Conteúdo: |
Abstract: 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. |
Palavras-Chave: |
Brasil; Lambing interval; PCR-RFLP; Peso corporal; SNP. |
Thesagro: |
Ovino; Polimorfismo; Polimorfismo Genético. |
Thesaurus Nal: |
Animal genetics; Body weight; Brazil; Genetic polymorphism; Genetic variation; Genotype; Litter weight; Polymorphism; Sheep. |
Categoria do assunto: |
-- G Melhoramento Genético |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/52325/1/API-Aromatase-gene.pdf
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Marc: |
LEADER 02367naa a2200349 a 4500 001 1631104 005 2010-01-26 008 2009 bl uuuu u00u1 u #d 100 1 $aLÔBO, A. M. B. O. 245 $aAromatase gene and its effects on growth, reproductive and material ability traits in a multibreed sheep from Brazil.$h[electronic resource] 260 $c2009 520 $aAbstract: 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. 650 $aAnimal genetics 650 $aBody weight 650 $aBrazil 650 $aGenetic polymorphism 650 $aGenetic variation 650 $aGenotype 650 $aLitter weight 650 $aPolymorphism 650 $aSheep 650 $aOvino 650 $aPolimorfismo 650 $aPolimorfismo Genético 653 $aBrasil 653 $aLambing interval 653 $aPCR-RFLP 653 $aPeso corporal 653 $aSNP 700 1 $aLÔBO, R. N. B. 700 1 $aPAIVA, S. R. 773 $tGenetics and Molecular Biology$gv. 32, n. 3, p. 484-490, 2009.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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Registros recuperados : 68 | |
4. | | LOBO, R. N. B.; LOBO, A. M. B. O. Evolução do melhoramento de caprinos e ovinos no Brasil. In: ENCONTRO DE GENÉTICA DO NORDESTE, 19.; SIMPÓSIO DE GENÉTICA HUMANA E MÉDICA DO NORDESTE, 1.; GENÉTICA NA PRAÇA, 2012, Petrolina, Juazeiro. A genética, a natureza e o ser humano: mudando mentalidades e transformando vidas. Petrolina: Embrapa Semiárido: UNIVASF: SBG, 2012. 11 f. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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7. | | LOBO, R. N. B.; LOBO, A. M. B. O. Melhoramento genético como ferramenta para o crescimento e o desenvolvimento da ovinocultura de corte. Revista Brasileira de Reprodução Animal, v. 31, n. 2, p. 247-253, abr./jun., 2007. Palestra apresentada no XVII Congresso Brasileiro de Reprodução Animal, 31 de maio a 02 de junho de 2007, Curitiba, PR.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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12. | | LOBO, R. N. B.; FACO, O.; LOBO, A. M. B. O.; VILLELA, L. C. V. Brazilian goat breeding programs. In: INTERNATIONAL CONFERENCE ON GOATS, 9.; REUNIÓN NACIONAL SOBRE CAPRINOCULTURA, 23., 2008, Querétaro, México. Sustainable goat production: challenges and opportunities of small and large enterprises; proceedings. Querétaro: International Goat Association, 2008. p. 154. Abstract 176.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Caprinos e Ovinos. |
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Registros recuperados : 68 | |
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