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| Registros recuperados : 65 | |
| 1. |  | ESPEJO, R. A.; ARAÚJO, R. V. de; COSTA, R. B.; ABREU, U. G. P. de; TAVEIRA, J. C.; CUNHA, G. H. de M.; HERRERA, G. P.; CONSTANTINO, M. Eco-efficiency of forestry companies around the world: a data envelopment analysis. Revista de Gestão Social e Ambiental (RGSA), Miami, v. 17, n.3, p.1-23, e03222, 2023.| Biblioteca(s): Embrapa Pantanal. |
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| 2. | | KREBS, L. C.; SANTOS, M. M. de M.; SIQUEIRA, M. C.; ARAUJO, B. P. G. de; OLIVEIRA, L. G.; FEITOSA, F. S. C.; CAMARGO, G. M. F. de; OLIVEIRA, C. A. de A.; COSTA, R. B.; SCHULTZ, E. B.; GODOI, F. N. de. Morphometric measurements for sexual dimorphism in the Campolina horse breed. Pesquisa Agropecuária Brasileira, v. 56, e02148, 2021. Título em português: Medidas morfométricas para o dimorfismo sexual em equinos da raça Campolina.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 3. | | SENES, B. B; CRUZ, V. A. R. da; COSTA, R. B.; AZEVEDO, H. C.; CAMARGO, G. M. F. de. Efeitos fixos que influenciam a eficiência reprodutiva de ovelhas Santa Inês. In: SIMPÓSIO BRASILEIRO DE MELHORAMENTO ANIMAL, 14., 2021, Santa Catarina. Passado, presente e futuro: anais. Santa Catarina: SBMA, 2021.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 4. | | HERRERA, G. P.; LOURIVAL, R.; COSTA, R. B. da; MOREIRA, T. B, S.; ABREU, U. G. P. de; CONSTANTINO, M. Econometric analysis of income, productivity and diversification among smallholders in Brazil. Land Use Policy, v. 76, p. 455-459, mar. 2018.| Biblioteca(s): Embrapa Pantanal. |
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| 5. | | PEGORARE, A. B.; MORAES, P. M. de; COSTA, R. B. da; ABREU, U. G. P. de; MENDES, D. R. F.; MOREIRA, T. B. S.; CUNHA, G. H. de; CONSTANTINO, M. Spatial econometric analysis of the main agricultural commodities produced in Central-West Region, Brazil. African Journal of Agricultural Research, v. 13, n. 4, p. 167-180, jan. 2018.| Biblioteca(s): Embrapa Pantanal. |
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| 6. | | EBERT, A.; BALDONI, A. B.; SKOWRONSKI, L.; CONSTANTINO. M.; BARROS. J. H. de S.; COSTA, R. B. da. Genetic diversity of a natural population of Mezilaurus itauba (Meisn.) Taub. ex Mez. in the southern Amazon, Brazil. Semina: Ciências Agrárias, Londrina, v. 38, n. 3, p. 1635-1640, 2017| Biblioteca(s): Embrapa Agrossilvipastoril. |
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| 7. | | COSTA, R. B. da; MARTINEZ, D. T.; CHICHORRO, J. F.; BAUER, M. de O.; CEZANA, D. P.; SOUZA, T. R. de. Desempenho de progênies no pré-melhoramento de Tectona grandis L.f no Estado do Espírito Santo. Scientia Forestalis, Piracicaba, v. 43, n. 105, p. 211-216, mar. 2015.| Biblioteca(s): Embrapa Florestas. |
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| 8. | | OTSUBO, H. de C. B.; MORAES, M. L. T. de; MORAES, M. A. de; NETO, M. J.; FREITAS, M. L. M.; COSTA, R. B. da; RESENDE, M. D. V. de; SEBBENN, A. M. Variação genética para caracteres silviculturais em três espécies arbóreas da região do bolsão sul-mato-grossense. Cerne, Lavras, v. 21, n. 4, p. 535-544, Oct./Dec. 2015.| Biblioteca(s): Embrapa Florestas. |
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| 9. | | CAMARGO, G. M. F. de; COSTA, R. B.; ALBUQUERQUE, L. G.; REGITANO, L. C. de A.; BALDI, F.; TONHATI, H. Association between JY-1 gene polymorphisms and reproductive traits in beef cattle. Gene, v. 533, n. 2, p. 477-480, jan. 2014.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 10. | | MORETTI, M. S.; TSUKAMOTO FILHO, A. de A.; COSTA, R. B. da; RONDON NETO, R. M.; MEDEIROS, R. A.; SOUSA, R. A. T. de M. e. Crescimento inicial de plantas de teca em monocultivo e sistema Taungya com milho em Figueiropolis D´Oeste, Estado de Mato Grosso. Scientia Forestalis, Piracicaba, v. 42, n. 102, p. 269-277, jun. 2014.| Biblioteca(s): Embrapa Florestas. |
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| 11. | | MAGGIONI, R.; COIMBRA, M. R. M.; COSTA, R. B. da; DINIZ, F. M.; MOLINA, W. F.; OLIVEIRA, D. M. de; LEGAT, A. P. Genetic variability of marine shrimp in the brazilian industry. Pesquisa Agropecuária Brasileira, Brasília, v. 48, n. 8, p. 968-974, ago. 2013.| Biblioteca(s): Embrapa Meio-Norte; Embrapa Unidades Centrais. |
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| 12. | | CAMARGO, G. M. F. de; COSTA, R. B.; ALBUQUERQUE, L. G. de; REGITANO, L. C. de A.; BALDI, F.; TONHATI, H. Polimorfismos no gene JY-1 e suas associações com ocorrência de prenhez precoce e idade ao primeiro parto em fêmeas bovinas. In: SIMPÓSIO BRASILEIRO DE MELHORAMENTO ANIMAL, 10., 2013, Uberaba. Anais... Belo Horizonte: SBMA, 2013. 3 p.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 13. | | COSTA, R. B. da; RESENDE, M. D. V. de; MARTINEZ, D. T.; ROEL, A. R.; RODRIGUES, N. B.; CONTINI, A. Z. Parâmetros genéticos e procedências e progênies de erva-mate nativa no estado de Mato Grosso do Sul. Revista de Agricultura, v. 87, n. 3, p. 202-211, 2012.| Biblioteca(s): Embrapa Florestas. |
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| 14. | | VERARDI, C. K.; RESENDE, M. D. V. de; COSTA, R. B. da; GONÇALVES, P. de S. Estimation of genetic parameters in rubber progenies. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 12, n. 3, p. 185-190, Sept. 2012.| Biblioteca(s): Embrapa Florestas. |
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| 15. | | COSTA, R. B. da; AZEVEDO, L. P. de A.; MARTINEZ, D. T.; TSUKAMOTO FILHO, A. de A.; FERNANDES, D. Á.; OLIVEIRA, O. E. de; RESENDE, M. D. V. de. Avaliação genética de Eucalyptus camaldulensis no Estado de Mato Grosso. Pesquisa Florestal Brasileira, Colombo, v. 32, n. 70, p. 165-173, abr./jun. 2012.| Biblioteca(s): Embrapa Florestas. |
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| 16. | | MARTINEZ, D. T.; RESENDE, M. D. V. de; COSTA, R. B. da; HIGA, A. R.; SANTOS, G. A.; FIER, I. S. N. Estudo da interação genótipo x ambiente em progênies de Pinus taeda por meio da análise de parâmetros genéticos. Floresta, Curitiba, v. 42, n. 3, p. 539-552, jul./set. 2012.| Biblioteca(s): Embrapa Florestas. |
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| 18. | | NASCIMENTO, E. S. P do; OLIVEIRA, C. R. de; GONÇALVES, P. de S.; COSTA, R. B. da; MORENO, R. M. B.; MATTOSO, L. H. C.; FERREIRA, A. G. Effect of rootstock on the scion of Hevea brasiliensis through metabolic analysis of latex samples by ¹H NMR. Crop Breeding and applied biotechnology S1, Londrina, p. 82-88, 2011.| Biblioteca(s): Embrapa Instrumentação. |
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| 20. | | COSTA, R. B. da; RESENDE, M. D. V. de; GONÇALVES, P. de S.; ROA, R. A. R.; FEITOSA, K. C. de O. Predição de parâmetros e valores genéticos para caracteres de crescimento e produção de látex em progênies de seringueira. Bragantia, Campinas, v. 69, n. 1, p. 49-56, 2010.| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 65 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
15/02/2017 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
KERN, E. L.; COBUCI, J. A.; COSTA, C. N.; DUCROCQ, V. |
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Afiliação: |
Elisandra Lurdes Kern, UFRGS; Jaime Araujo Cobuci, UFRGS; CLAUDIO NAPOLIS COSTA, CNPGL; Vincent Ducrocq, INRA. |
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Título: |
Survival analysis of productive life in Brazilian holstein using a piecewise Weibull proportional hazard model. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Livestock Science, v. 185, p. 89-96, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract The objectives of this study were to assess the most important factors that influence productive life (PL) of Brazilian Holstein cows and to estimate genetic parameters for PL using a piecewise Weibull proportional hazard model. Records of PL from first calving to last recording (culling) of 132,922 cows coming from 945 herds were used. They had to have their first calving occurring between 1989 and 2013 and they were daughters of 6,804 sires. The model included the time-dependent effects of region within year, class of milk production within herd-year, class of milk production within lactation number, class of fat and protein contents within herd and (variation in) herd size as well as the time-independent fixed effect of age at first calving, the random effects of herd-year, sire and maternal grand sire. All fixed effects had a significant effect on PL (Po0.001). The relative risk (RR) for within herd class of milk yield varied from 3.16 for the worst 20% class to 0.41 for the best 20% class. RR also increased as protein and fat decreased, but to a lesser extent compared to milk yield. Significant effects on PL were found for regionyear, with large yearly changes in some cases. RR increased with age at first calving and with herd size but lower risks were observed when herd size was increasing or decreasing, compared to stable herds. The Weibull shape parameters (and therefore RR) increased with lactation number and with stage of lactation. The sire genetic variance estimate was 0.03070.002 which corresponds to an equivalent heritability estimate of 6.1% accounting for censoring. A positive genetic trend of PL was observed. These results may contribute to the development of a routine genetic evaluation necessary to improve PL of Brazilian Holsteins. MenosAbstract The objectives of this study were to assess the most important factors that influence productive life (PL) of Brazilian Holstein cows and to estimate genetic parameters for PL using a piecewise Weibull proportional hazard model. Records of PL from first calving to last recording (culling) of 132,922 cows coming from 945 herds were used. They had to have their first calving occurring between 1989 and 2013 and they were daughters of 6,804 sires. The model included the time-dependent effects of region within year, class of milk production within herd-year, class of milk production within lactation number, class of fat and protein contents within herd and (variation in) herd size as well as the time-independent fixed effect of age at first calving, the random effects of herd-year, sire and maternal grand sire. All fixed effects had a significant effect on PL (Po0.001). The relative risk (RR) for within herd class of milk yield varied from 3.16 for the worst 20% class to 0.41 for the best 20% class. RR also increased as protein and fat decreased, but to a lesser extent compared to milk yield. Significant effects on PL were found for regionyear, with large yearly changes in some cases. RR increased with age at first calving and with herd size but lower risks were observed when herd size was increasing or decreasing, compared to stable herds. The Weibull shape parameters (and therefore RR) increased with lactation number and with stage of lactation. The sire genetic varian... Mostrar Tudo |
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Palavras-Chave: |
Environment effect; Genetic analysis. |
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Thesaurus NAL: |
dairy cattle; longevity. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02398naa a2200205 a 4500
001 2064218
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aKERN, E. L.
245 $aSurvival analysis of productive life in Brazilian holstein using a piecewise Weibull proportional hazard model.$h[electronic resource]
260 $c2016
520 $aAbstract The objectives of this study were to assess the most important factors that influence productive life (PL) of Brazilian Holstein cows and to estimate genetic parameters for PL using a piecewise Weibull proportional hazard model. Records of PL from first calving to last recording (culling) of 132,922 cows coming from 945 herds were used. They had to have their first calving occurring between 1989 and 2013 and they were daughters of 6,804 sires. The model included the time-dependent effects of region within year, class of milk production within herd-year, class of milk production within lactation number, class of fat and protein contents within herd and (variation in) herd size as well as the time-independent fixed effect of age at first calving, the random effects of herd-year, sire and maternal grand sire. All fixed effects had a significant effect on PL (Po0.001). The relative risk (RR) for within herd class of milk yield varied from 3.16 for the worst 20% class to 0.41 for the best 20% class. RR also increased as protein and fat decreased, but to a lesser extent compared to milk yield. Significant effects on PL were found for regionyear, with large yearly changes in some cases. RR increased with age at first calving and with herd size but lower risks were observed when herd size was increasing or decreasing, compared to stable herds. The Weibull shape parameters (and therefore RR) increased with lactation number and with stage of lactation. The sire genetic variance estimate was 0.03070.002 which corresponds to an equivalent heritability estimate of 6.1% accounting for censoring. A positive genetic trend of PL was observed. These results may contribute to the development of a routine genetic evaluation necessary to improve PL of Brazilian Holsteins.
650 $adairy cattle
650 $alongevity
653 $aEnvironment effect
653 $aGenetic analysis
700 1 $aCOBUCI, J. A.
700 1 $aCOSTA, C. N.
700 1 $aDUCROCQ, V.
773 $tLivestock Science$gv. 185, p. 89-96, 2016.
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