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Registro Completo |
Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
25/03/2022 |
Data da última atualização: |
25/03/2022 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
GONCALVES, C. A.; OLIVEIRA, J. R. da C.; COSTA, N. de L. |
Afiliação: |
CARLOS ALBERTO GONCALVES, UEPAE-BELEM; JOSE RIBAMAR DA CRUZ OLIVEIRA, CPAF-RO; NEWTON DE LUCENA COSTA, UEPAE-PORTO VELHO. |
Título: |
Adaptação de novos germoplasmas de leguminosas forrageiras em Porto Velho, Rondônia - Brasil. |
Ano de publicação: |
1990 |
Fonte/Imprenta: |
In: REUNION RED INTERNACIONAL DE EVALUACION DE PASTOS TROPICALES, 1., 1990, Lima. [Anais]. Cali: CIAT, 1990. |
Páginas: |
V. 1, p. 153-158. |
Série: |
(CIAT. Documento de trabajo, 75). |
Idioma: |
Português |
Conteúdo: |
Foram avaliados 33 ecotipos de leguminosas forrageiras para selecionar as que mais se adaptam às condições edafoclimáticas do estado de Rondônia. |
Palavras-Chave: |
Amazônia Ocidental; Embrapa Rondônia; Porto Velho (RO); Rondônia; Western Amazon. |
Thesagro: |
Aclimatação; Campo Experimental; Características Agronômicas; Comportamento de Variedade; Condição Ambiental; Leguminosa Forrageira; Manejo; Pastagem; Rendimento. |
Thesaurus Nal: |
Acclimation; Agronomic traits; Crop yield; Demonstration farms; Environmental factors; Forage legumes; Pasture management; Variety trials. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/232932/1/cpafro-18737.pdf
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Marc: |
LEADER 01459nam a2200421 a 4500 001 2141318 005 2022-03-25 008 1990 bl uuuu u00u1 u #d 100 1 $aGONCALVES, C. A. 245 $aAdaptação de novos germoplasmas de leguminosas forrageiras em Porto Velho, Rondônia - Brasil.$h[electronic resource] 260 $aIn: REUNION RED INTERNACIONAL DE EVALUACION DE PASTOS TROPICALES, 1., 1990, Lima. [Anais]. Cali: CIAT$c1990 300 $aV. 1, p. 153-158. 490 $a(CIAT. Documento de trabajo, 75). 520 $aForam avaliados 33 ecotipos de leguminosas forrageiras para selecionar as que mais se adaptam às condições edafoclimáticas do estado de Rondônia. 650 $aAcclimation 650 $aAgronomic traits 650 $aCrop yield 650 $aDemonstration farms 650 $aEnvironmental factors 650 $aForage legumes 650 $aPasture management 650 $aVariety trials 650 $aAclimatação 650 $aCampo Experimental 650 $aCaracterísticas Agronômicas 650 $aComportamento de Variedade 650 $aCondição Ambiental 650 $aLeguminosa Forrageira 650 $aManejo 650 $aPastagem 650 $aRendimento 653 $aAmazônia Ocidental 653 $aEmbrapa Rondônia 653 $aPorto Velho (RO) 653 $aRondônia 653 $aWestern Amazon 700 1 $aOLIVEIRA, J. R. da C. 700 1 $aCOSTA, N. de L.
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Embrapa Rondônia (CPAF-RO) |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
22/12/2017 |
Data da última atualização: |
27/01/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
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. |
Afiliação: |
UFV/VIÇOSA; UFV/VIÇOSA; UFV/VIÇOSA; MARIANA MAGALHAES CAMPOS, CNPGL; FERNANDA SAMARINI MACHADO, CNPGL; UFV/VIÇOSA; UFV/VIÇOSA; Universitt Wageningen. |
Título: |
Determination of energy and protein requirements for crossbred Holstein × Gyr preweaned dairy calves. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Journal of Dairy Science, v. 100, n. 2, p. 1170-1178, 2017. |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Maintenance; Retained energy; Starter feed. |
Thesaurus NAL: |
milk. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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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