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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
14/01/2019 |
Data da última atualização: |
24/01/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
ROCHA, G. M. F.; COBUCI, J. A.; COSTA, C. N.; ABREU, L. R. A.; MOTA, L. F. M.; PIRES, A. V.; VILLELA, S. D. J.; MARTINS, P. G. M. A. |
Afiliação: |
Graziela M. F. Rocha, Universidade Federal do Vale do Jequitinhonha e Mucuri; Jaime A. Cobuci, UFRGS; CLAUDIO NAPOLIS COSTA, CNPGL; Luíza R. A. Abreu, Universidade Federal do Vale do Jequitinhonha e Mucuri; Lúcio F. M. Mota, Universidade Federal do Vale do Jequitinhonha e Mucuri; Aldrin V. Pires, Universidade Federal do Vale do Jequitinhonha e Mucuri; Severino D. J. Villela, Universidade Federal do Vale do Jequitinhonha e Mucuri; Paulo G. M. A. Martins, Universidade Federal do Vale do Jequitinhonha e Mucuri. |
Título: |
Genetic association between stayability, and productive and reproductive traits in Holstein cows. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Animal Production Science, v. 58, p. 1788-1793, 2018. |
Idioma: |
Inglês |
Conteúdo: |
Abstract The objective was to estimate the genetic parameters for the cow?s ability to stay in the herd (stayability) until 48 and 54 months of age (STAY48 and STAY54) and up to 36 and 48 months after the first calving (STAY36ac and STAY48ac), and their associations with 305-day milk production (MP305) in the first lactation, age at first calving and first calving interval, from the first three lactations of cows reared in Brazil and born between 1987 and 2006. The covariance components were estimated by bivariate analyses, using the Bayesian approach. The a posteriori distributions of the components of interest were obtained with the Gibbs sampler. Fixed effect of contemporary group, additive and residual random genetic effect, and age of dam as covariate (linear and quadratic) were included in the analyses. Low heritability values were obtained for most traits, except for STAY48ac and MP305. Genetic correlation estimates between age at first calving and stayability traits were high and positive, except for STAY48ac. In addition, we detected genetic correlations between MP305 and STAY36ac and STAY48ac. In conclusion, we can infer that genetic correlations between MP305, and STAY36ac and STAY48ac indicate that the current focus on selection of animals for improved milk production in the first lactation can lead to genetic gains on longevity, although not expressive. |
Palavras-Chave: |
Age at first calving. |
Thesaurus Nal: |
Dairy cattle; Genetic correlation; Longevity. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02137naa a2200253 a 4500 001 2103921 005 2023-01-24 008 2018 bl uuuu u00u1 u #d 100 1 $aROCHA, G. M. F. 245 $aGenetic association between stayability, and productive and reproductive traits in Holstein cows.$h[electronic resource] 260 $c2018 520 $aAbstract The objective was to estimate the genetic parameters for the cow?s ability to stay in the herd (stayability) until 48 and 54 months of age (STAY48 and STAY54) and up to 36 and 48 months after the first calving (STAY36ac and STAY48ac), and their associations with 305-day milk production (MP305) in the first lactation, age at first calving and first calving interval, from the first three lactations of cows reared in Brazil and born between 1987 and 2006. The covariance components were estimated by bivariate analyses, using the Bayesian approach. The a posteriori distributions of the components of interest were obtained with the Gibbs sampler. Fixed effect of contemporary group, additive and residual random genetic effect, and age of dam as covariate (linear and quadratic) were included in the analyses. Low heritability values were obtained for most traits, except for STAY48ac and MP305. Genetic correlation estimates between age at first calving and stayability traits were high and positive, except for STAY48ac. In addition, we detected genetic correlations between MP305 and STAY36ac and STAY48ac. In conclusion, we can infer that genetic correlations between MP305, and STAY36ac and STAY48ac indicate that the current focus on selection of animals for improved milk production in the first lactation can lead to genetic gains on longevity, although not expressive. 650 $aDairy cattle 650 $aGenetic correlation 650 $aLongevity 653 $aAge at first calving 700 1 $aCOBUCI, J. A. 700 1 $aCOSTA, C. N. 700 1 $aABREU, L. R. A. 700 1 $aMOTA, L. F. M. 700 1 $aPIRES, A. V. 700 1 $aVILLELA, S. D. J. 700 1 $aMARTINS, P. G. M. A. 773 $tAnimal Production Science$gv. 58, p. 1788-1793, 2018.
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Embrapa Gado de Leite (CNPGL) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Ocidental. |
Data corrente: |
19/03/2010 |
Data da última atualização: |
07/12/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
MORAES, M. F.; REIS, A. R.; MORAES, L. A. C.; LAVRES-JUNIOR, J.; VIVIAN, R.; CABRAL, C. P.; MALAVOLTA, E. |
Afiliação: |
Milton Ferreira Moraes, CENA/USP; André Rodrigues Reis, CENA/USP; LARISSA ALEXANDRA CARDOSO MORAES, CPAA; José Lavres-Junior, CENA/USP; Rafael Vivian, USP; Cleusa Pereira Cabral, CENA/USP; Eurípedes Malavolta, CENA/USP. |
Título: |
Effects of molybdenum, nickel, and nitrogen sources on the mineral nutrition and growth of rice plants. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, v. 40, p. 3238-3251, 2009. |
Idioma: |
Inglês |
Conteúdo: |
The aims of the current work were to measure the effect of Mo and Ni on dry-matter yield of rice plants supplied with two N sources (ammonium nitrate and urea) and to evaluate the influence of Mo and Ni on variables related to dry-matter yield, such as activity of both urease and nitrate reductase, chlorophyll, net photosynthesis rate, total N, nitrate content, and Mo and Ni concentrations in roots and shoots. |
Palavras-Chave: |
Micronutrientes. |
Thesagro: |
Arroz; Nutrição Vegetal. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/187950/1/S8715.pdf
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Marc: |
LEADER 01088naa a2200229 a 4500 001 1667363 005 2018-12-07 008 2009 bl uuuu u00u1 u #d 100 1 $aMORAES, M. F. 245 $aEffects of molybdenum, nickel, and nitrogen sources on the mineral nutrition and growth of rice plants. 260 $c2009 520 $aThe aims of the current work were to measure the effect of Mo and Ni on dry-matter yield of rice plants supplied with two N sources (ammonium nitrate and urea) and to evaluate the influence of Mo and Ni on variables related to dry-matter yield, such as activity of both urease and nitrate reductase, chlorophyll, net photosynthesis rate, total N, nitrate content, and Mo and Ni concentrations in roots and shoots. 650 $aArroz 650 $aNutrição Vegetal 653 $aMicronutrientes 700 1 $aREIS, A. R. 700 1 $aMORAES, L. A. C. 700 1 $aLAVRES-JUNIOR, J. 700 1 $aVIVIAN, R. 700 1 $aCABRAL, C. P. 700 1 $aMALAVOLTA, E. 773 $tCommunications in Soil Science and Plant Analysis$gv. 40, p. 3238-3251, 2009.
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