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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
22/12/2017 |
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Data da última atualização: |
27/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, A. L.; MARCONDES, M. I.; DETMANN, E.; CAMPOS, M. M.; MACHADO, F. S.; VALADARES FILHO, S. C.; CASTRO, M. M. D.; DIJKSTRA, J. |
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Afiliação: |
UFV/VIÇOSA; UFV/VIÇOSA; UFV/VIÇOSA; MARIANA MAGALHAES CAMPOS, CNPGL; FERNANDA SAMARINI MACHADO, CNPGL; UFV/VIÇOSA; UFV/VIÇOSA; Universitt Wageningen. |
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Título: |
Determination of energy and protein requirements for crossbred Holstein × Gyr preweaned dairy calves. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of Dairy Science, v. 100, n. 2, p. 1170-1178, 2017. |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT The objective was to quantify the energy and protein nutritional requirements of Holstein × Gyr crossbred preweaned dairy calves until 64 d of age. Thirty-nine Holstein × Gyr crossbred male calves with an average initial live weight (mean ± SEM; for all next values) of 36 ± 1.0 kg were used. Five calves were slaughtered at 4 d of life to estimate the animals? initial body composition (reference group). The remaining 34 calves were distributed in a completely randomized design in a 3 × 2 factorial arrangement consisting of 3 levels of milk (2, 4, or 8 L/d) and 2 levels of starter feed (presence or absence in diet). At 15 and 45 d of life, 4 animals from each treatment were subjected to digestibility trials with total collection of feces (for 72 h) and urine (for 24 h). At 64 d of age, all animals were slaughtered, their gastro-intestinal tract was washed to determine the empty body weight (EBW; kg), and their body tissues were sampled for subsequent analyses. The net energy requirement for maintenance was estimated using an exponential regression between metabolizable energy intake and heat production (both in Mcal/EBW0.75 per d) and was 74.3 ± 5.7 kcal/EBW0.75 per d, and was not affected by inclusion of starter feed in the diet. The metabolizable energy requirement for maintenance was determined at the point of zero energy retention in the body and was 105.2 ± 5.8 kcal/EBW0.75 per d. The net energy for gain was estimated using the EBW and the empty body gain (EBG; kg/d) as 0.0882 ± 0.0028 × EBW0.75 × EBG0.9050±0.0706. The metabolizable energy efficiency for gain (kg) of the milk was 57.4 ± 3.45%, and the kg of the starter feed was 39.3 ± 2.09%. The metabolizable protein requirement for maintenance was 3.52 ± 0.34 g/BW0.75 per d. The net protein required for each kilogram gained was estimated as 119.1 ± 32.9 × EBW0.0663±0.059. The metabolizable protein efficiency for gain was 77 ± 8.5% and was not affected by inclusion of starter feed in the diet. In conclusion, the energy efficiency for gain of milk is higher than that of starter and the net protein required per unit protein gain increases with empty body weight. MenosABSTRACT The objective was to quantify the energy and protein nutritional requirements of Holstein × Gyr crossbred preweaned dairy calves until 64 d of age. Thirty-nine Holstein × Gyr crossbred male calves with an average initial live weight (mean ± SEM; for all next values) of 36 ± 1.0 kg were used. Five calves were slaughtered at 4 d of life to estimate the animals? initial body composition (reference group). The remaining 34 calves were distributed in a completely randomized design in a 3 × 2 factorial arrangement consisting of 3 levels of milk (2, 4, or 8 L/d) and 2 levels of starter feed (presence or absence in diet). At 15 and 45 d of life, 4 animals from each treatment were subjected to digestibility trials with total collection of feces (for 72 h) and urine (for 24 h). At 64 d of age, all animals were slaughtered, their gastro-intestinal tract was washed to determine the empty body weight (EBW; kg), and their body tissues were sampled for subsequent analyses. The net energy requirement for maintenance was estimated using an exponential regression between metabolizable energy intake and heat production (both in Mcal/EBW0.75 per d) and was 74.3 ± 5.7 kcal/EBW0.75 per d, and was not affected by inclusion of starter feed in the diet. The metabolizable energy requirement for maintenance was determined at the point of zero energy retention in the body and was 105.2 ± 5.8 kcal/EBW0.75 per d. The net energy for gain was estimated using the EBW and the empty body gain (EBG; k... Mostrar Tudo |
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Palavras-Chave: |
Maintenance; Retained energy; Starter feed. |
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Thesaurus Nal: |
milk. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02917naa a2200253 a 4500
001 2083414
005 2023-01-27
008 2017 bl uuuu u00u1 u #d
100 1 $aSILVA, A. L.
245 $aDetermination of energy and protein requirements for crossbred Holstein × Gyr preweaned dairy calves.$h[electronic resource]
260 $c2017
520 $aABSTRACT The objective was to quantify the energy and protein nutritional requirements of Holstein × Gyr crossbred preweaned dairy calves until 64 d of age. Thirty-nine Holstein × Gyr crossbred male calves with an average initial live weight (mean ± SEM; for all next values) of 36 ± 1.0 kg were used. Five calves were slaughtered at 4 d of life to estimate the animals? initial body composition (reference group). The remaining 34 calves were distributed in a completely randomized design in a 3 × 2 factorial arrangement consisting of 3 levels of milk (2, 4, or 8 L/d) and 2 levels of starter feed (presence or absence in diet). At 15 and 45 d of life, 4 animals from each treatment were subjected to digestibility trials with total collection of feces (for 72 h) and urine (for 24 h). At 64 d of age, all animals were slaughtered, their gastro-intestinal tract was washed to determine the empty body weight (EBW; kg), and their body tissues were sampled for subsequent analyses. The net energy requirement for maintenance was estimated using an exponential regression between metabolizable energy intake and heat production (both in Mcal/EBW0.75 per d) and was 74.3 ± 5.7 kcal/EBW0.75 per d, and was not affected by inclusion of starter feed in the diet. The metabolizable energy requirement for maintenance was determined at the point of zero energy retention in the body and was 105.2 ± 5.8 kcal/EBW0.75 per d. The net energy for gain was estimated using the EBW and the empty body gain (EBG; kg/d) as 0.0882 ± 0.0028 × EBW0.75 × EBG0.9050±0.0706. The metabolizable energy efficiency for gain (kg) of the milk was 57.4 ± 3.45%, and the kg of the starter feed was 39.3 ± 2.09%. The metabolizable protein requirement for maintenance was 3.52 ± 0.34 g/BW0.75 per d. The net protein required for each kilogram gained was estimated as 119.1 ± 32.9 × EBW0.0663±0.059. The metabolizable protein efficiency for gain was 77 ± 8.5% and was not affected by inclusion of starter feed in the diet. In conclusion, the energy efficiency for gain of milk is higher than that of starter and the net protein required per unit protein gain increases with empty body weight.
650 $amilk
653 $aMaintenance
653 $aRetained energy
653 $aStarter feed
700 1 $aMARCONDES, M. I.
700 1 $aDETMANN, E.
700 1 $aCAMPOS, M. M.
700 1 $aMACHADO, F. S.
700 1 $aVALADARES FILHO, S. C.
700 1 $aCASTRO, M. M. D.
700 1 $aDIJKSTRA, J.
773 $tJournal of Dairy Science$gv. 100, n. 2, p. 1170-1178, 2017.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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| Registros recuperados : 132 | |
| 121. |  | FRAZÃO, H. da S.; COUTINHO, M. V.; SANTANA, E. de F.; CASTRO, C. S. P. de; AMARAL, Z. P. de S.; PRAÇA, L. B.; SILVA, A. C. e (ed.). Diagnóstico da situação inicial dos laboratórios da Embrapa Recursos Genéticos e Biotecnologia com relação à implantação de Sistema de Qualidade. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2007. 30 p. (Embrapa Recursos Genéticos e Biotecnologia. Documentos, 235).| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 122. | | DIAS, D. G. S.; SILVA, S. F. da; MARTINS, E. S.; SOARES, C. M. S.; FALCAO, R.; GOMES, A. C. M. M.; PRACA, L. B.; DIAS, J. M. C. de S.; MONNERAT, R. G. Prospecção de estirpes de Bacillus thuringiensis efetivas contra mosquitos. Brasília: Embrapa Recursos Genéticos e Biotecnologia, 2002. 24 p. (Embrapa Recursos Genéticos e Biotecnologia. Boletim de Pesquisa e Desenvolvimento, 30).| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 123. | | PRACA, L. B.; BATISTA, A. C.; MARTINS, E. S.; SIQUEIRA, C. B.; DIAS, D. G. de S.; GOMES, A. C. M. M.; FALCAO, R.; PONTES, R. G. M. S. de. Estirpes de Bacillus thuringiensis efetivas contra insetos das ordens Lepidoptera, Coleoptera e Diptera. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 39, n. 1, p. 11-16, jan. 2004 Título em inglês: Bacillus thuringiensis strains effective against insects of Lepidoptera, Coleoptera and Diptera orders.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 124. | | MACEDO, C. L. de; MARTINS, E. S.; MACEDO, L. L. P. de; SANTOS, A. C. dos; PRACA, L. B.; GÓIS, L. A. B. de; PONTES, R. G. M. S. de. Seleção e caracterização de estirpes de Bacillus thuringiensis eficientes contra a Diatraea saccharalis (Lepidoptera: Crambidae). Pesquisa Agropecuária Brasileira, v. 47, n. 12, p. 1759-1765, 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 125. | | SANTOS, K. B. dos; NEVES, P.; MENEGUIM, A. M.; SANTOS, R. B. dos; SANTOS, W. J. dos; BOAS, G. V.; DUMAS, V.; MARTINS, E.; PRAÇA, L. B.; MONNERAT, R. Seleção e caracterização de estirpes de Bacillus thuringiensis tóxicas a Spodoptera eridania (Cramer), Spodoptera cosmioides (Walker) e Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae). Brasília: Embrapa Recursos Genéticos e Biotecnologia, 2008. 25 p. (Embrapa Recursos Genéticos e Biotecnologia. Boletim de Pesquisa e Desenvolvimento, 216).| Tipo: Boletim de Pesquisa e Desenvolvimento |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 126. | | MONNERAT, R. G.; DIAS, D. G. S.; SILVA, S. F. da; MARTINS, E. S.; BERRY, C.; FALCÃO, R.; GOMES, A. C. M. M.; PRAÇA, L. B.; SOARES, C. M. S. Screening of Bacillus thuringiensis strains effective against mosquitoes. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 2, p. 103-106, 2005.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 127. | | PONTES, R. G. M. S. de; DIAS, D. G. S.; SILVA, S. F. da; MARTINS, E. S.; BERRY, C.; FALCAO, R.; GOMES, A. C. M. M.; PRACA, L. B.; SOARES, C. M. S. Screening of Bacillus thuringiensis strains effective against mosquitoes. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 2, p. 103-106, fev. 2005 Título em português: Prospecção de estirpes de Bacillus thuringiensis efetivas contra mosquitos.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 128. | | PONTES, R. G. M. S. de; SOARES, C. M.; SANTOS, M. dos A.; OLIVEIRA, C.; CARDOSO, C.; LIMA, L. H. C.; PRACA, L. B.; MARTINS, E. S.; DUMAS, V. F.; QUEIROZ, P. R. Q.; RAMOS, F. R. R.; SUJII, E. R. Controle de larvas de Aedes aegypti através da utilização de Bacillus thuringiensis em São Sebastião (DF), Brasil. Universitas: ciências da saúde, Brasília, v. 10, n. 2, p. 115-120, jul./dez. 2012.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 5 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 129. | | MONNERAT, R.; SOARES, C. M.; SANTOS, M. dos A.; OLIVEIRA, C.; CARDOSO, C.; LIMA, L. H. C.; PRAÇA, L. B.; MARTINS, E. S.; DUMAS, V. F.; MELATTI, V. M.; SILVA, C. R. da; SILVA, P. Q. da; RODRIGUES, M.; LAMAS, R.; WAGNER, F. de O.; RAMOS, F. R.; PIMENTEL, J. W.; SAPORITI, R.; ROBERG, R.; DRESH, A.; PAGANELA, M. B. Implantação de um programa de ações integradas para controle do mosquito da dengue em São Sebastião. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2007. 21 p. (Embrapa Recursos Genéticos e Biotecnologia. Documentos, 236).| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 130. | | FRAZAO, H. da S.; PENALOZA, A. D. P. de S.; CASTRO, C. S. P. de; SANTANA, E. de F.; LIMA, L. H. C.; COUTINHO, M. V.; AMARAL, Z. P. de S.; NOGUEIRA, E. O. P. e L.; PEREIRA NETO, L. G.; PRACA, L. B.; ANJOS, S. S. N. dos. A melhoria contínua no programa de auditorias internas da qualidade e seu reflexo na implantação de sistema da qualidade na Embrapa Recursos Genéticos e Biotecnologia. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2009. 19 p.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 131. | | FRAZÃO, H. da S.; LIMA, L. H. C.; ROCHA, S. L. da; DIAS, J. M. C. de S.; AMARAL, Z. P.; PRAÇA, L. B.; SILVA, A. C. e; OLIVEIRA, H. F. F. de; OLIVEIRA, M. W. M. de; MORAES, M. C. B.; ANJOS, S. S. N.; CASTRO, C. S. P. de; COUTINHO, M. V.; SANTANA, E. de F. Treinamento em noções de segurança e sistema da qualidade em laboratório. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2007. 79 p. (Embrapa Recursos Genéticos e Biotecnologia. Documentos, 218).| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 132. | | MONNERAT, R. G.; BATISTA, A. C.; MEDEIROS, P. T. de; MARTINS, E. S.; MELATTI, V. M.; PRAÇA, L. B.; DUMAS, V. F.; MORINAGA, C.; DEMO, C.; GOMES, A. C. M.; FALCÃO, R.; SIQUEIRA, C. B.; SILVA-WERNECK, J. O.; BERRY, C. Screening of brazilian Bacillus thuringiensis isolates active against Spodoptera frugiperda, Plutella xylostella and Anticarsia gemmatalis. Biological Control, v. 41, p. 291-295, 2007| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - A |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 132 | |
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