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| Registros recuperados : 41 | |
| 1. |  | SAINZ, R. D.; BARIONI, L. G.; PAULINO, P. V.; VALADARES FILHO, S. C.; OLTJEN, J. W. Growth patterns of Nellore vc British beef cattle breeds assessed using a dynamic, mechanistic model of cattle growth and composition. In: KEBREAB, E.; DIJKSTRA, J.; BANNINK, A.; GERRITS, W. J. J.; FRANCE, J. (Ed.). Nutrient digestion and utilization in farm animals: modelling approaches. Oxfordshire: CABI, 2006. p. 160-170.| Biblioteca(s): Embrapa Cerrados. |
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| 3. | | VALADARES FILHO, S. C.; RODRIGUEZ, N. M.; RAMON, R.; INFANZON, V.; PIZARRO, E. A. Digestão total e parcial de fenos de soja perene em ovinos 1. Matéria seca e energia. Revista Brasileira de Zootecnia, Viçosa, MG, v. 16, n. 2, p. 131-139, 1988.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 4. | | VALADARES FILHO, S. C.; RODRIGUEZ, N. M.; RAMON, R.; IFANZON, V.; PIZARRO, E. A. Digestao total e parcial de fenos de soja perene em ovinos. 2. carboidratos. Revista Brasileira de Zootecnia, Viçosa, MG, v. 16, n. 2, p. 140-147, 1988.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 7. | | RAMOS, S. M.; VALADARES FILHO, S. C.; SILVA, J. F. C.; LEAO, M. I.; QUEIROZ, A. C.; ALMEIDA, R. G. Digestibilidade intestinal dos alimentos com a tecnica do saco de nailon movel em novilhos Cecocolectomizados. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 32., 1995, Brasilia. Anais... Brasilia: SBZ, 1995. p.247-249| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 8. | | CASTILLO, A. M.; VALADARES FILHO, S. C.; SILVA, J. F. C.; LEAO, M. I.; CASTRO, A. C. G. Digestibilidade intestinal de varios alimentos, utilizando-se a tecnica do scao de anilon movel em bezerros cecocolectomizados. Revista Brasileira de Zootecnia, v.22, n.1, p.176-187, 1993.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 9. | | VALADARES FILHO, S. C.; SILVA, J. F. C.; LEAO, M. I.; CASTRO, A. C.; VALADARES, R. F. D. Digestibilidade in vitro e alguns parametros de fermentacao ruminal medidos em novilhos Holandeses, Nelores e Bufalos mesticos alimentado com racao purificada. Revista Brasileira de Zootecnia, v.19, n.5, p.441-449, 1990.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 11. | | SILVA, J. F. C.; VALADARES FILHO, S. C.; LEAO, M. I.; CASTRO, A. C. G.; COSTA, W. P. Efeito da monensina sodica e da ureia sobre o consumo , parametros ruminais, digestibilidade aprente e balanco nutricional em bovinos. Revista Brasileira de Zootecnia, v.20, n.5, p.454-470, 1991.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 12. | | SILVA, A. L.; MARCONDES, M. I.; DETMANN, E.; MACHADO, F. S.; VALADARES FILHO, S. C.; TRECE, A. S.; DIJKSTRA, J. Effects of raw milk and starter feed on intake and body composition of Holstein × Gyr male calves up to 64 days of age. Journal of Dairy Science, v. 98, n. 4, p. 2641-2649, 2015.| Biblioteca(s): Embrapa Gado de Leite. |
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| 13. | | VILELA, G. L.; VALADARES FILHO, S. C.; SILVA, J. F. C.; CECON, P. R.; PEREIRA, J. C.; ALMEIDA, R. G. Efeito de diferentes racoes nas degradabilidades in situ potenciais da materia seca e da proteina bruta de varios alimentos. Revista Brasileira de Zootecnia, v.23, n.3, p.333-341, 1994.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 14. | | SGUIZZATO, A. L. L.; MARCONDES, M. I.; VALADARES FILHO, S. C.; CATON, J.; NEVILLE, T. L.; MACHADO, F. S.; PACHECO, M. V. C.; ROTTA, P. P. Body composition changes of crossbred Holstein × Gyr cows and conceptus during pregnancy. Journal of Dairy Science, v. 103, n. 3, p. 2773-2783, 2020.| Biblioteca(s): Embrapa Gado de Leite. |
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| 15. | | VALADARES FILHO, S. C.; SILVA, J. F. C.; SANTANNA, R.; LEAO, M. I.; VALADARES, R. F. D.; CASTRO, A. C. G. Composicao de bacterias ruminais e absorcao de aminoacidos microbianos no intestino delgado de novilhos Holandeses, Nelores e Bufalos mesticos. Revista Brasileira de Zootecnia, v.19, n.5, p.431-440, 1990.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 16. | | SILVA, A. L.; MARCONDES, M. I.; DETMANN, E.; CAMPOS, M. M.; MACHADO, F. S.; VALADARES FILHO, S. C.; CASTRO, M. M. D.; DIJKSTRA, J. Determination of energy and protein requirements for crossbred Holstein × Gyr preweaned dairy calves. Journal of Dairy Science, v. 100, n. 2, p. 1170-1178, 2017.| Biblioteca(s): Embrapa Gado de Leite. |
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| 17. | | REIS, S. F.; PAULINO, P. V. R.; MEDEIROS, S. R. de; VALADARES FILHO, S. C.; FEIJO, G. L. D.; TORRES JUNIOR, R. A. de A.; DETMANN, E. Eficiência alimentar, exigências nutricionais e qualidade da carne de novilhas de diferentes grupos genéticos. In: JORNADA CIENTÍFICA DA EMBRAPA GADO DE CORTE, 4., 2008, Campo Grande, MS. Anais [da]... Campo Grande, MS: Embrapa Gado de Corte, 2008. 1 CD-ROM. Editores técnicos Valdemir Antônio Laura, Paulo Henrique Nogueira Biscola. 1 p. 1 CD-ROM.| Biblioteca(s): Embrapa Gado de Corte. |
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| 18. | | ARAUJO, G. G. L. de; SILVA, J. F. C. da; VALADARES FILHO, S. C.; LEAO, M. I.; DINIZ, E. F.; ALMEIDA, G. A. P. Efeito da degradabilidade da proteina sobre o consumo e digestao da proteina bruta do extrato etereo e balanco de nitrogenio de vacas lactantes. Revista Brasileira de Zootecnia, v.23, n.2, p.258-267, 1994.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 19. | | MARCONDES, M. I.; PROVAZZI, F. P.; SILVESTRE, T.; SILVA, A. L.; VALADARES FILHO, S. C.; CAMPOS, M. M.; MACHADO, F. S.; ROTTA, P. P. Protein requirements for pregnant dairy cows. Journal of Dairy Science, v. 106, p. 8821-8834, 2023.| Biblioteca(s): Embrapa Gado de Leite. |
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| 20. | | MARCONDES, M. I.; SILVESTRE, T.; DIJKSTRA, J.; PROVAZZI, F. P.; SILVA, A. L.; VALADARES FILHO, S. C.; CAMPOS, M. M.; MACHADO, F. S.; ROTTA, P. P. Protein requirements for pregnant dairy cows. Animal - Science Proceedings, v. 13, n. 3, p. 253-254, 2022. Edição dos Anais do VII International Symposium on Energy and Protein Metabolism and Nutrition, 2022, Granada, Spain.| Biblioteca(s): Embrapa Gado de Leite. |
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| Registros recuperados : 41 | |
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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: |
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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Circulação/Nível: |
A - 1 |
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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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