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Registros recuperados : 90 | |
6. | | ROSADO, V. U.; ROSADO, A. Acudagem publica. In: ROSADO, V.U.; ROSADO, A. Decimo livro das secas. Natal: UFRN-Ed. Universitaria, 1985. p.355-361. (ESAM. Colecao Mossoroense, 304) E em Boletim do Departamento Nacional de Obras Contra Secas, Fortaleza, v.20, n.6, p.135-158, nov. 1959. Biblioteca(s): Embrapa Semiárido. |
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Registros recuperados : 90 | |
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Registro Completo
Biblioteca(s): |
Embrapa Pecuária Sul. |
Data corrente: |
23/08/2018 |
Data da última atualização: |
23/08/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
Internacional - A |
Autoria: |
HORN, M. M.; MORAES, J. C. F.; JAUME, C. M.; EDELWEISS, M. I. A.; ROSADO, A. |
Afiliação: |
Marilise M. Horn, UFRGS; JOSE CARLOS FERRUGEM MORAES, CPPSUL; CARLOS MIGUEL JAUME EGGLETON, CPPSUL; Maria I. A. Edelweiss, UFRGS; Adriano Rosado. |
Título: |
Reproductive deficiency in bulls from synthetic breeds according to the type of crossbreed and the morphology of the Y chromosome. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
Genetics and Molecular Biology, v. 28, n. 2, p. 225-229, 2005. |
Idioma: |
Inglês |
Conteúdo: |
We used 550 Braford and 214 Brangus-Ibagé bulls to study the association between Y chromosome morphology and the evaluation of breeding-soundness, karyotyping and breeding records were used to assess Y chromosome morphology. In general, no direct association was detected between the individual type of Y chromosome and reproductive fitness as previously estimated through breeding soundness examination. The type of breeding strategy used to form the synthetic breeds was also analyzed. The Braford breed is about 3/8 Zebu (Bos taurus indicus) and 5/8 Hereford (Bos taurus taurus) but when the breeding strategy used 1/4 Zebu animals to produce Braford bulls which were 3/8 Zebu a greater percentage of the bulls had to be culled due to reproductive problems. Our study shows that certain interactions between genotypes can be detrimental to the reproductive efficiency of 3/8 Zebu animals and that breeding strategies avoiding or favoring certain genotypes can be used to reduce the percentage of bulls from synthetic breeds that are culled due to problems with semen quality. |
Palavras-Chave: |
Brangus-Ibagé. |
Thesagro: |
Sêmen; Touro. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/181845/1/Horn-2005-Reproductive-deficiency-in-bulls.pdf
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Marc: |
LEADER 01717naa a2200205 a 4500 001 2094438 005 2018-08-23 008 2005 bl uuuu u00u1 u #d 100 1 $aHORN, M. M. 245 $aReproductive deficiency in bulls from synthetic breeds according to the type of crossbreed and the morphology of the Y chromosome.$h[electronic resource] 260 $c2005 520 $aWe used 550 Braford and 214 Brangus-Ibagé bulls to study the association between Y chromosome morphology and the evaluation of breeding-soundness, karyotyping and breeding records were used to assess Y chromosome morphology. In general, no direct association was detected between the individual type of Y chromosome and reproductive fitness as previously estimated through breeding soundness examination. The type of breeding strategy used to form the synthetic breeds was also analyzed. The Braford breed is about 3/8 Zebu (Bos taurus indicus) and 5/8 Hereford (Bos taurus taurus) but when the breeding strategy used 1/4 Zebu animals to produce Braford bulls which were 3/8 Zebu a greater percentage of the bulls had to be culled due to reproductive problems. Our study shows that certain interactions between genotypes can be detrimental to the reproductive efficiency of 3/8 Zebu animals and that breeding strategies avoiding or favoring certain genotypes can be used to reduce the percentage of bulls from synthetic breeds that are culled due to problems with semen quality. 650 $aSêmen 650 $aTouro 653 $aBrangus-Ibagé 700 1 $aMORAES, J. C. F. 700 1 $aJAUME, C. M. 700 1 $aEDELWEISS, M. I. A. 700 1 $aROSADO, A. 773 $tGenetics and Molecular Biology$gv. 28, n. 2, p. 225-229, 2005.
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Embrapa Pecuária Sul (CPPSUL) |
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