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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
05/05/1997 |
Data da última atualização: |
18/03/2014 |
Autoria: |
CUNHA, R.; PRADO, M. A. do; CARVALHO, J. E. U. de; GOES, M. de. |
Afiliação: |
JOSE EDMAR URANO DE CARVALHO, CPATU. |
Título: |
Morphological studies on the development of the recalcitrant seed of Bertholletia excelsa H.B.K. (Brazil nut). |
Ano de publicação: |
1996 |
Fonte/Imprenta: |
Seed Science & Technology, v. 24, n. 3, p. 581-584, 1996. |
Idioma: |
Inglês |
Palavras-Chave: |
Brasil; Brazil nut; Castanha-do-brasil; Desenvolvimento; Development; Maturation; Morfologia; Morphology. |
Thesagro: |
Fruta; Maturação; Semente. |
Thesaurus Nal: |
Amazonia; seeds. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00815naa a2200301 a 4500 001 1397655 005 2014-03-18 008 1996 bl uuuu u00u1 u #d 100 1 $aCUNHA, R. 245 $aMorphological studies on the development of the recalcitrant seed of Bertholletia excelsa H.B.K. (Brazil nut). 260 $c1996 650 $aAmazonia 650 $aseeds 650 $aFruta 650 $aMaturação 650 $aSemente 653 $aBrasil 653 $aBrazil nut 653 $aCastanha-do-brasil 653 $aDesenvolvimento 653 $aDevelopment 653 $aMaturation 653 $aMorfologia 653 $aMorphology 700 1 $aPRADO, M. A. do 700 1 $aCARVALHO, J. E. U. de 700 1 $aGOES, M. de 773 $tSeed Science & Technology$gv. 24, n. 3, p. 581-584, 1996.
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Embrapa Amazônia Oriental (CPATU) |
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Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
13/09/2022 |
Data da última atualização: |
13/09/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 4 |
Autoria: |
SILVESTRE, T.; FERREIRA, A. L.; MACHADO, F. S.; CAMPOS, M. M.; TOMICH, T. R.; PEREIRA, L. G. R.; RODRIGUES, P. H. M.; MARCONDES, M. I. |
Afiliação: |
TAINA SILVESTRE, Universidade de São Paulo; ALEXANDRE LIMA FERREIRA, Universidade Federal de Minas Gerais; FERNANDA SAMARINI MACHADO, CNPGL; MARIANA MAGALHAES CAMPOS, CNPGL; THIERRY RIBEIRO TOMICH, CNPGL; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; PAULO HENRIQUE MAZZA RODRIGUES, Universidade de São Paulo; MARCOS INACIO MARCONDES, Washington State University. |
Título: |
Energy requirements of Holstein, Gyr, and Holstein x Gyr crossbred heifers using the respirometry technique. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Frontiers in Animal Science, v. 3, 919515, 2022. |
DOI: |
https://doi.org/10.3389/fanim.2022.919515 |
Idioma: |
Inglês |
Conteúdo: |
We aimed to determine the energy requirements for maintenance and gain of 18 prepubertal dairy heifers of three breed compositions (BC; Holstein, Gyr, and Holstein × Gyr). Diets were formulated for gains of 0, 400, and 800 g/day, corresponding to 1.0×, 1.5×, and 2.0× maintenance, respectively. Each dairy BC had six animals with an initial body weight (iBW) of 219.8 ± 32 kg, 215.8 ± 33 kg, and 228.3 ± 33 kg for Holstein, Gyr, and Holstein × Gyr, respectively. The experiment was designed as a completely randomized design in a factorial scheme 3 × 3 [three BC and three feeding levels (FL)]. Digestibility and metabolism assays were performed to determine energy losses through feces and urine. Heat production was determined using the continuous measurement of oxygen consumption, carbon dioxide production, and methane emissions in respiration chambers. Energy requirements for maintenance (NEm) were calculated based on the relationship between heat production (HP) and metabolizable energy intake (MEI). The efficiency of use of metabolizable energy for maintenance (km) was obtained from the ratio between NEm and metabolizable energy requirements for maintenance. The net energy requirements for growth (NEg) were estimated from the model RE = β0 × EBW0.75 × EBGβ1, where RE is the retained energy (Mcal/day), EBW is empty body weight (kg0.75), and EBG is the empty body gain (kg/day). The efficiency of use of metabolizable energy for gain (kg) was estimated as the slope of the regression between RE and MEI for gain. Gyr heifers presented NEm 15% lower (98 kcal/kg of BW0.75) than HG crossbred animals. Holstein and crossbred heifers had similar NEm, 102 and 112 kcal/kg of BW0.75, respectively. The km was 0.71, 0.74, and 0.75 for HG, Holstein, and Gyr, respectively. Net energy requirement for gain (NEg) did not differ across BC, and a single equation was fit for all BC: RE = 0.069 × BW0.75 × BGW0.852. A single kg of 0.65 was observed for all three BC. Breed composition affected the energy requirements for maintenance and the energy partition, and those differences should be considered when estimating requirements for Gyr, Holstein × Gyr crossbred, and Holstein heifers. MenosWe aimed to determine the energy requirements for maintenance and gain of 18 prepubertal dairy heifers of three breed compositions (BC; Holstein, Gyr, and Holstein × Gyr). Diets were formulated for gains of 0, 400, and 800 g/day, corresponding to 1.0×, 1.5×, and 2.0× maintenance, respectively. Each dairy BC had six animals with an initial body weight (iBW) of 219.8 ± 32 kg, 215.8 ± 33 kg, and 228.3 ± 33 kg for Holstein, Gyr, and Holstein × Gyr, respectively. The experiment was designed as a completely randomized design in a factorial scheme 3 × 3 [three BC and three feeding levels (FL)]. Digestibility and metabolism assays were performed to determine energy losses through feces and urine. Heat production was determined using the continuous measurement of oxygen consumption, carbon dioxide production, and methane emissions in respiration chambers. Energy requirements for maintenance (NEm) were calculated based on the relationship between heat production (HP) and metabolizable energy intake (MEI). The efficiency of use of metabolizable energy for maintenance (km) was obtained from the ratio between NEm and metabolizable energy requirements for maintenance. The net energy requirements for growth (NEg) were estimated from the model RE = β0 × EBW0.75 × EBGβ1, where RE is the retained energy (Mcal/day), EBW is empty body weight (kg0.75), and EBG is the empty body gain (kg/day). The efficiency of use of metabolizable energy for gain (kg) was estimated as the slope of the ... Mostrar Tudo |
Palavras-Chave: |
Bioenergetics; Breed composition; Indirect calorimetry; Maintenance. |
Thesagro: |
Bovino; Calorimetria; Gado Gir; Gado Holandês; Manutenção; Raça. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1146382/1/Energy-requirements-of-Holstein-Gyr-and-Holstein-x-Gyr-crossbred-heifers-using-the-respirometry-technique.pdf
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Marc: |
LEADER 03195naa a2200337 a 4500 001 2146382 005 2022-09-13 008 2022 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3389/fanim.2022.919515$2DOI 100 1 $aSILVESTRE, T. 245 $aEnergy requirements of Holstein, Gyr, and Holstein x Gyr crossbred heifers using the respirometry technique.$h[electronic resource] 260 $c2022 520 $aWe aimed to determine the energy requirements for maintenance and gain of 18 prepubertal dairy heifers of three breed compositions (BC; Holstein, Gyr, and Holstein × Gyr). Diets were formulated for gains of 0, 400, and 800 g/day, corresponding to 1.0×, 1.5×, and 2.0× maintenance, respectively. Each dairy BC had six animals with an initial body weight (iBW) of 219.8 ± 32 kg, 215.8 ± 33 kg, and 228.3 ± 33 kg for Holstein, Gyr, and Holstein × Gyr, respectively. The experiment was designed as a completely randomized design in a factorial scheme 3 × 3 [three BC and three feeding levels (FL)]. Digestibility and metabolism assays were performed to determine energy losses through feces and urine. Heat production was determined using the continuous measurement of oxygen consumption, carbon dioxide production, and methane emissions in respiration chambers. Energy requirements for maintenance (NEm) were calculated based on the relationship between heat production (HP) and metabolizable energy intake (MEI). The efficiency of use of metabolizable energy for maintenance (km) was obtained from the ratio between NEm and metabolizable energy requirements for maintenance. The net energy requirements for growth (NEg) were estimated from the model RE = β0 × EBW0.75 × EBGβ1, where RE is the retained energy (Mcal/day), EBW is empty body weight (kg0.75), and EBG is the empty body gain (kg/day). The efficiency of use of metabolizable energy for gain (kg) was estimated as the slope of the regression between RE and MEI for gain. Gyr heifers presented NEm 15% lower (98 kcal/kg of BW0.75) than HG crossbred animals. Holstein and crossbred heifers had similar NEm, 102 and 112 kcal/kg of BW0.75, respectively. The km was 0.71, 0.74, and 0.75 for HG, Holstein, and Gyr, respectively. Net energy requirement for gain (NEg) did not differ across BC, and a single equation was fit for all BC: RE = 0.069 × BW0.75 × BGW0.852. A single kg of 0.65 was observed for all three BC. Breed composition affected the energy requirements for maintenance and the energy partition, and those differences should be considered when estimating requirements for Gyr, Holstein × Gyr crossbred, and Holstein heifers. 650 $aBovino 650 $aCalorimetria 650 $aGado Gir 650 $aGado Holandês 650 $aManutenção 650 $aRaça 653 $aBioenergetics 653 $aBreed composition 653 $aIndirect calorimetry 653 $aMaintenance 700 1 $aFERREIRA, A. L. 700 1 $aMACHADO, F. S. 700 1 $aCAMPOS, M. M. 700 1 $aTOMICH, T. R. 700 1 $aPEREIRA, L. G. R. 700 1 $aRODRIGUES, P. H. M. 700 1 $aMARCONDES, M. I. 773 $tFrontiers in Animal Science$gv. 3, 919515, 2022.
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