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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: |
14/02/2017 |
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Data da última atualização: |
30/01/2023 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Autoria: |
MACHADO, F. S.; TOMICH, T. R.; FERREIRA, A. L.; CAVALCANTI, L. F.; CAMPOS, M. M.; PAIVA, C. A. V.; RIBAS, M. N.; PEREIRA, L. G. R. |
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Afiliação: |
FERNANDA SAMARINI MACHADO, CNPGL; THIERRY RIBEIRO TOMICH, CNPGL; A. L. Ferreira; L. F. Cavalcanti, CNPq; Intergado; MARIANA MAGALHAES CAMPOS, CNPGL; CLAUDIO ANTONIO VERSIANI PAIVA, CNPGL; M. N. RIBAS, CNPq; Intergado; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL. |
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Título: |
Technical note: A facility for respiration measurements in cattle. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of Dairy Science, v. 99, n. 6, p. 4899-4906, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract A respiration system consisting of 4 climate-controlled chambers and 1 set of flowmeters and analyzers was constructed and validated. Each chamber had volume of 21.10 m3 (3.68 × 2.56 × 2.24 m) and was made from steel with double-glazed windows on either side enabling visual contact between animals. The chambers are independently climate-controlled and can maintain temperature and relative humidity in a range from 5 to 45°C and 30 to 80%, respectively. A flow generator and mass flowmeter continuously pull air from each chamber and a slight negative pressure inside the chamber is ensured. Air from all chambers and ambient air share a common gas analysis and data acquisition system for monitoring O2, CO2, and CH4 concentrations over the measurement period, with the cycle time set to 20 min. Analyzers are regularly calibrated and the chambers have mean recoveries of 99.0 and 98.0% for CO2 and CH4, respectively. The chambers are equipped with infrared cameras and electronic feed and water bins for intake measurements, as well as sensors for monitoring animal position and heart rate. Data acquisition and analysis software is used to calculate the rate of consumption of O2 and production of CO2 and CH4. The dynamic respiration measurements are integrated with feed intake data and other sensors. The daily gas exchanges are estimated by integration to determine methane emission and heat production. We conducted a trial with 12 lactating 3/4 Holstein × 1/4 Gyr crossbred dairy cows (6 multiparous and 6 primiparous) under 2 feeding regimens (ad libitum or restricted) to validate the system. Two 22-h respiration measurements were obtained from each cow. Restricted-fed cows showed lower values for milk yield, methane emission, and heat production compared with ad libitum-fed animals. We found no difference between groups for CH4 produced per kilogram of dry matter intake. Repeatability for CH4 emission and heat production was high (0.97 and 0.92, respectively). The respiration system described herein is a useful tool for measuring the dynamic and accumulated data of heat production, methane emission, and feed intake. MenosAbstract A respiration system consisting of 4 climate-controlled chambers and 1 set of flowmeters and analyzers was constructed and validated. Each chamber had volume of 21.10 m3 (3.68 × 2.56 × 2.24 m) and was made from steel with double-glazed windows on either side enabling visual contact between animals. The chambers are independently climate-controlled and can maintain temperature and relative humidity in a range from 5 to 45°C and 30 to 80%, respectively. A flow generator and mass flowmeter continuously pull air from each chamber and a slight negative pressure inside the chamber is ensured. Air from all chambers and ambient air share a common gas analysis and data acquisition system for monitoring O2, CO2, and CH4 concentrations over the measurement period, with the cycle time set to 20 min. Analyzers are regularly calibrated and the chambers have mean recoveries of 99.0 and 98.0% for CO2 and CH4, respectively. The chambers are equipped with infrared cameras and electronic feed and water bins for intake measurements, as well as sensors for monitoring animal position and heart rate. Data acquisition and analysis software is used to calculate the rate of consumption of O2 and production of CO2 and CH4. The dynamic respiration measurements are integrated with feed intake data and other sensors. The daily gas exchanges are estimated by integration to determine methane emission and heat production. We conducted a trial with 12 lactating 3/4 Holstein × 1/4 Gyr crossbred dairy... Mostrar Tudo |
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Palavras-Chave: |
Bioenergetics; Indirect calorimetry. |
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Thesaurus Nal: |
energy; methane. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02860naa a2200253 a 4500
001 2064087
005 2023-01-30
008 2016 bl uuuu u00u1 u #d
100 1 $aMACHADO, F. S.
245 $aTechnical note$bA facility for respiration measurements in cattle.$h[electronic resource]
260 $c2016
520 $aAbstract A respiration system consisting of 4 climate-controlled chambers and 1 set of flowmeters and analyzers was constructed and validated. Each chamber had volume of 21.10 m3 (3.68 × 2.56 × 2.24 m) and was made from steel with double-glazed windows on either side enabling visual contact between animals. The chambers are independently climate-controlled and can maintain temperature and relative humidity in a range from 5 to 45°C and 30 to 80%, respectively. A flow generator and mass flowmeter continuously pull air from each chamber and a slight negative pressure inside the chamber is ensured. Air from all chambers and ambient air share a common gas analysis and data acquisition system for monitoring O2, CO2, and CH4 concentrations over the measurement period, with the cycle time set to 20 min. Analyzers are regularly calibrated and the chambers have mean recoveries of 99.0 and 98.0% for CO2 and CH4, respectively. The chambers are equipped with infrared cameras and electronic feed and water bins for intake measurements, as well as sensors for monitoring animal position and heart rate. Data acquisition and analysis software is used to calculate the rate of consumption of O2 and production of CO2 and CH4. The dynamic respiration measurements are integrated with feed intake data and other sensors. The daily gas exchanges are estimated by integration to determine methane emission and heat production. We conducted a trial with 12 lactating 3/4 Holstein × 1/4 Gyr crossbred dairy cows (6 multiparous and 6 primiparous) under 2 feeding regimens (ad libitum or restricted) to validate the system. Two 22-h respiration measurements were obtained from each cow. Restricted-fed cows showed lower values for milk yield, methane emission, and heat production compared with ad libitum-fed animals. We found no difference between groups for CH4 produced per kilogram of dry matter intake. Repeatability for CH4 emission and heat production was high (0.97 and 0.92, respectively). The respiration system described herein is a useful tool for measuring the dynamic and accumulated data of heat production, methane emission, and feed intake.
650 $aenergy
650 $amethane
653 $aBioenergetics
653 $aIndirect calorimetry
700 1 $aTOMICH, T. R.
700 1 $aFERREIRA, A. L.
700 1 $aCAVALCANTI, L. F.
700 1 $aCAMPOS, M. M.
700 1 $aPAIVA, C. A. V.
700 1 $aRIBAS, M. N.
700 1 $aPEREIRA, L. G. R.
773 $tJournal of Dairy Science$gv. 99, n. 6, p. 4899-4906, 2016.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Biblioteca |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
10/04/2024 |
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Data da última atualização: |
10/04/2024 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
XISTO, G. J.; UGUEN, K.; SOUSA, S. G. A. de. |
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Afiliação: |
GLAUBER JACAÚNA XISTO, UNIVERSIDADE DO ESTADO DO AMAZONAS; KATELL UGUEN, UNIVERSIDADE DO ESTADO DO AMAZONAS; SILAS GARCIA AQUINO DE SOUSA, CPAA. |
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Título: |
Principais práticas de adubação orgânica em comunidades tradicionais de várzea na região de Parintins. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: REUNIÃO ANUAL DA SBPC, 61., 2009, Manaus. Anais / resumos... Manaus: SBPC, 2009. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho é levantar as práticas de adubação utilizadas pelos agricultores, buscando identificar as práticas promissoras e os recursos naturais disponíveis com potencial para adubação numa comunidade de várzea. |
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Palavras-Chave: |
Leguminosas. |
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Thesagro: |
Adubo Orgânico; Agricultura Familiar; Leguminosa. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1163443/1/sbpcnet-org-br-livro-61ra-resumos-resumos-5438.pdf
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Marc: |
LEADER 00837nam a2200181 a 4500
001 2163443
005 2024-04-10
008 2009 bl uuuu u00u1 u #d
100 1 $aXISTO, G. J.
245 $aPrincipais práticas de adubação orgânica em comunidades tradicionais de várzea na região de Parintins.$h[electronic resource]
260 $aIn: REUNIÃO ANUAL DA SBPC, 61., 2009, Manaus. Anais / resumos... Manaus: SBPC$c2009
520 $aO objetivo deste trabalho é levantar as práticas de adubação utilizadas pelos agricultores, buscando identificar as práticas promissoras e os recursos naturais disponíveis com potencial para adubação numa comunidade de várzea.
650 $aAdubo Orgânico
650 $aAgricultura Familiar
650 $aLeguminosa
653 $aLeguminosas
700 1 $aUGUEN, K.
700 1 $aSOUSA, S. G. A. de
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Embrapa Amazônia Ocidental (CPAA) |
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