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Registro Completo |
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 |
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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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
Data corrente: |
05/05/2014 |
Data da última atualização: |
13/03/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
BAKER, T. R.; PENNINGTON, R. T.; MAGALLON, S.; GLOOR, E.; LAURANCE, W. F.; ALEXIADES, M.; ALVAREZ, E.; ARAUJO, A.; ARETS, E. J. M. M.; AYMARD, G.; OLIVEIRA, A. A. de; AMARAL, I.; ARROYO, L.; BONAL, D.; BRIENEN, R. J. W.; CHAVE, J.; DEXTER, K. G.; FIORE, A. Di; ELER, E.; FELDPAUSCH, T. R.; FERREIRA, L.; LOPEZ-GONZALEZ, G.; HEIJDEN, G. van der; HOGUCHI, N.; HONORIO, E.; HUAMANTUPA, I.; KILLEEN, T. J.; LAURANCE, S.; LEAÑO, C.; LEWIS, S. L.; MALHI, Y.; MARIMON, B. S.; MARIMON JUNIOR, B. H.; MONTEAGUDO MENDOZA, A.; NEILL, D.; PEÑUELA-MORA, M. C.; PITMAN, N.; PRIETO, A.; QUESADA, C. A.; RAMÍREZ, F.; RAMÍREZ ANGULO, H.; RUDAS, A.; RUSCHEL, A. R.; SALOMÃO, R. P.; ANDRADE, A. S. de; SILVA, J. N. M.; SILVEIRA, M.; SIMON, M. F.; SPIRONELLO, W.; STEEGE, H. ter; TERBORGH, J.; TOLEDO, M.; TORRES-LEZAMA, A.; VASQUEZ, R.; VIEIRA, I. C. G.; VILANOVA, E.; VOS, V. A.; PHILLIPS, O. L. |
Afiliação: |
Timothy R. Baker, University of Leeds; R. Toby Pennington, Royal Botanic Garden Edinburgh; Susana Magallon, Universidad Nacional Autónoma de México; Emanuel Gloor, University of Leeds; William F. Laurance, Centre for Tropical Environmental and Sustainability Science (TESS) and School of Marine and Tropical Biology, James Cook University; Miguel Alexiades, University of Kent; Esteban Alvarez, Universidad del Tolima; Alejandro Araujo, Museo de Historia Natural Noel Kempff Mercado; Eric J. M. M. Arets, Wageningen University and Research Centre; Gerardo Aymard, Herbario Universitario PORT; Atila Alves de Oliveira, Projeto TEAM – Manaus, Instituto Nacional de Pesquisas da Amazônia; Iêda Amaral, Projeto TEAM – Manaus, Instituto Nacional de Pesquisas da Amazônia; Luzmila Arroyo, Museo de Historia Natural Noel Kempff Mercado; Damien Bonal, INRA-Université de Lorraine; Roel J. W. Brienen, University of Leeds; Jerome Chave, CNRS and Université Paul Sabatier; Kyle G. Dexter, Royal Botanic Garden Edinburgh / University of Edinburgh; Anthony Di Fiore, University of Texas at Austin; Eduardo Eler, Projeto TEAM – Manaus, Instituto Nacional de Pesquisas da Amazônia; Ted R. Feldpausch, University of Leeds; Leandro Ferreira, MPEG; Gabriela Lopez-Gonzalez, University of Leeds; Geertje van der Heijden, University of Wisconsin-Milwaukee / Smithsonian Tropical Research Institute; Niro Higuchi, INPA; Eurídice Honorio, University of Leeds / Instituto de Investigaciónes de la Amazonía Peruana; Isau Huamantupa, Herbario CUZ, Universidad Nacional San Antonio Abad del Cusco; Tim J. Killeen, Conservation International; Susan Laurance, Centre for Tropical Environmental and Sustainability Science (TESS) and School of Marine and Tropical Biology, James Cook University; Claudio Leaño, Instituto Boliviano de Investigación Forestal; Simon L. Lewis, University of Leeds / University College London; Yadvinder Malhi, University of Oxford; Beatriz Schwantes Marimon, Universidade do Estado de Mato Grosso - Campus de Nova Xavantina; Ben Hur Marimon Junior, Universidade do Estado de Mato Grosso - Campus de Nova Xavantina; Abel Monteagudo Mendoza, Jardín Botanico de Missouri; David Neill, Universidad Estatal Amazónica; Maria Cristina Peñuela-Mora, Universidad Nacional de Colombia; Nigel Pitman, Duke University; Adriana Prieto, Instituto de Ciencias Naturales, UNAL; Carlos A. Quesada, INPA; Fredy Ramírez, Universidad Nacional de la Amazonía Peruana; Hirma Ramírez Angulo, INDEFOR, Universidad de los Andes; Agustin Rudas, Instituto de Ciencias Naturales, UNAL; ADEMIR ROBERTO RUSCHEL, CPATU; Rafael P. Salomão, MPEG; Ana Segalin de Andrade, PDBFF, Instituto Nacional de Pesquisas da Amazônia; JOSÉ NATALINO MACEDO SILVA, UFRA / Instituto Floresta Tropical; Marcos Silveira, Universidade Federal do Acre; MARCELO FRAGOMENI SIMON, CENARGEN; Wilson Spironello, Projeto TEAM – Manaus, Instituto Nacional de Pesquisas da Amazônia; Hans ter Steege, Naturalis Biodiversity Center / Utrecht University; John Terborgh, Duke University; Marisol Toledo, stituto Boliviano de Investigación Forestal; Armando Torres-Lezama, INDEFOR, Universidad de los Andes; Rodolfo Vasquez, Jardín Botanico de Missouri; Ima Célia Guimarães Vieira, MPEG; Emilio Vilanova, INDEFOR, Universidad de los Andes; Vincent A. Vos, Universidad Autónoma del Beni; Oliver L. Phillips, University of Leeds. |
Título: |
Fast demographic traits promote high diversification rates of Amazonian trees. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Ecology Letters, v. 17, n. 5, p. 527-536, May 2014. |
DOI: |
10.1111/ele.12252 |
Idioma: |
Inglês |
Conteúdo: |
The Amazon rain forest sustains the world's highest tree diversity, but it remains unclear why some clades of trees are hyperdiverse, whereas others are not. Using dated phylogenies, estimates of current species richness and trait and demographic data from a large network of forest plots, we show that fast demographic traits ? short turnover times ? are associated with high diversification rates across 51 clades of canopy trees. This relationship is robust to assuming that diversification rates are either constant or decline over time, and occurs in a wide range of Neotropical tree lineages. This finding reveals the crucial role of intrinsic, ecological variation among clades for understanding the origin of the remarkable diversity of Amazonian trees and forests. |
Palavras-Chave: |
Diversidade; Floresta amazônica; Tempo de geração. |
Thesagro: |
Árvore. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/179982/1/Baker-et-al-2014-Ecology-Letters.pdf
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Marc: |
LEADER 03035naa a2200865 a 4500 001 1985552 005 2023-03-13 008 2014 bl uuuu u00u1 u #d 024 7 $a10.1111/ele.12252$2DOI 100 1 $aBAKER, T. R. 245 $aFast demographic traits promote high diversification rates of Amazonian trees.$h[electronic resource] 260 $c2014 520 $aThe Amazon rain forest sustains the world's highest tree diversity, but it remains unclear why some clades of trees are hyperdiverse, whereas others are not. Using dated phylogenies, estimates of current species richness and trait and demographic data from a large network of forest plots, we show that fast demographic traits ? short turnover times ? are associated with high diversification rates across 51 clades of canopy trees. This relationship is robust to assuming that diversification rates are either constant or decline over time, and occurs in a wide range of Neotropical tree lineages. This finding reveals the crucial role of intrinsic, ecological variation among clades for understanding the origin of the remarkable diversity of Amazonian trees and forests. 650 $aÁrvore 653 $aDiversidade 653 $aFloresta amazônica 653 $aTempo de geração 700 1 $aPENNINGTON, R. T. 700 1 $aMAGALLON, S. 700 1 $aGLOOR, E. 700 1 $aLAURANCE, W. F. 700 1 $aALEXIADES, M. 700 1 $aALVAREZ, E. 700 1 $aARAUJO, A. 700 1 $aARETS, E. J. M. M. 700 1 $aAYMARD, G. 700 1 $aOLIVEIRA, A. A. de 700 1 $aAMARAL, I. 700 1 $aARROYO, L. 700 1 $aBONAL, D. 700 1 $aBRIENEN, R. J. W. 700 1 $aCHAVE, J. 700 1 $aDEXTER, K. G. 700 1 $aFIORE, A. Di 700 1 $aELER, E. 700 1 $aFELDPAUSCH, T. R. 700 1 $aFERREIRA, L. 700 1 $aLOPEZ-GONZALEZ, G. 700 1 $aHEIJDEN, G. van der 700 1 $aHOGUCHI, N. 700 1 $aHONORIO, E. 700 1 $aHUAMANTUPA, I. 700 1 $aKILLEEN, T. J. 700 1 $aLAURANCE, S. 700 1 $aLEAÑO, C. 700 1 $aLEWIS, S. L. 700 1 $aMALHI, Y. 700 1 $aMARIMON, B. S. 700 1 $aMARIMON JUNIOR, B. H. 700 1 $aMONTEAGUDO MENDOZA, A. 700 1 $aNEILL, D. 700 1 $aPEÑUELA-MORA, M. C. 700 1 $aPITMAN, N. 700 1 $aPRIETO, A. 700 1 $aQUESADA, C. A. 700 1 $aRAMÍREZ, F. 700 1 $aRAMÍREZ ANGULO, H. 700 1 $aRUDAS, A. 700 1 $aRUSCHEL, A. R. 700 1 $aSALOMÃO, R. P. 700 1 $aANDRADE, A. S. de 700 1 $aSILVA, J. N. M. 700 1 $aSILVEIRA, M. 700 1 $aSIMON, M. F. 700 1 $aSPIRONELLO, W. 700 1 $aSTEEGE, H. ter 700 1 $aTERBORGH, J. 700 1 $aTOLEDO, M. 700 1 $aTORRES-LEZAMA, A. 700 1 $aVASQUEZ, R. 700 1 $aVIEIRA, I. C. G. 700 1 $aVILANOVA, E. 700 1 $aVOS, V. A. 700 1 $aPHILLIPS, O. L. 773 $tEcology Letters$gv. 17, n. 5, p. 527-536, May 2014.
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