| |
|
|
 | 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 |
|
Biblioteca(s): |
Embrapa Gado de Leite. |
|
Data corrente: |
14/02/2017 |
|
Data da última atualização: |
30/01/2023 |
|
Tipo da produção científica: |
Nota Técnica/Nota Científica |
|
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. |
|
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. |
|
Título: |
Technical note: A facility for respiration measurements in cattle. |
|
Ano de publicação: |
2016 |
|
Fonte/Imprenta: |
Journal of Dairy Science, v. 99, n. 6, p. 4899-4906, 2016. |
|
Idioma: |
Inglês |
|
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 |
|
Palavras-Chave: |
Bioenergetics; Indirect calorimetry. |
|
Thesaurus Nal: |
energy; methane. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Meio-Norte. |
|
Data corrente: |
19/08/1996 |
|
Data da última atualização: |
25/01/2024 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso |
|
Autoria: |
LIMA, P. R. de A.; ARAUJO, A. G. de. |
|
Afiliação: |
PAULO ROBERTO DE ALBUQUERQUE LIMA, CPAMN; ANTONIO GOMES DE ARAUJO, CPAMN. |
|
Título: |
Avaliação de genótipos de sorgo granífero no Estado do Piauí. |
|
Ano de publicação: |
1986 |
|
Fonte/Imprenta: |
In: SEMINARIO DE PESQUISA AGROPECUARIA DO PIAUI, 4., 1986, Teresina. Anais... Teresina: EMBRAPA-UEPAE de Teresina, 1986. p. 118-127. |
|
Série: |
(EMBRAPA-UEPAE de Teresina, Documentos, 6) |
|
Idioma: |
Português |
|
Conteúdo: |
Foram conduzidos no municipio de Batalha, Estado do Piaui, dois ensaios nacionais de sorgo granifero. Os experimentos foram instalados em 25.01.82 e 10.02.83. O delineamento experimental adotado foi um "latino" 5 x 5, com quatro repeticoes. As parcelas foram constituidas de 4 fileiras de 5,00m, espacadas de 0,7m, semeando-se 25 sementes por metro linear, deixando-se apos o desbaste, 15 plantas. A area util da parcelafoi de 7,0m. De acordo com os resultados obtidos no trabalho, concluiu-se que: a) o sorgo e uma boa opcao para producao de graos cerealiferos, mesmo em condicoes climaticas adversas; b) os genotipos DA 48, Ruby, Ranchero, CMS XS 345, AG 1011 e AG 1003 apresentaram rendimentos de graos superiores a 2.700 kg/ha. |
|
Palavras-Chave: |
Brasil; Piaui. |
|
Thesagro: |
Rendimento; Sorghum Bicolor; Sorgo Granífero. |
|
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/189430/1/Seminario-p118.pdf
|
|
Marc: |
LEADER 01371nam a2200193 a 4500
001 1052443
005 2024-01-25
008 1986 bl uuuu u00u1 u #d
100 1 $aLIMA, P. R. de A.
245 $aAvaliação de genótipos de sorgo granífero no Estado do Piauí.
260 $aIn: SEMINARIO DE PESQUISA AGROPECUARIA DO PIAUI, 4., 1986, Teresina. Anais... Teresina: EMBRAPA-UEPAE de Teresina, 1986. p. 118-127.$c1986
490 $a(EMBRAPA-UEPAE de Teresina, Documentos, 6)
520 $aForam conduzidos no municipio de Batalha, Estado do Piaui, dois ensaios nacionais de sorgo granifero. Os experimentos foram instalados em 25.01.82 e 10.02.83. O delineamento experimental adotado foi um "latino" 5 x 5, com quatro repeticoes. As parcelas foram constituidas de 4 fileiras de 5,00m, espacadas de 0,7m, semeando-se 25 sementes por metro linear, deixando-se apos o desbaste, 15 plantas. A area util da parcelafoi de 7,0m. De acordo com os resultados obtidos no trabalho, concluiu-se que: a) o sorgo e uma boa opcao para producao de graos cerealiferos, mesmo em condicoes climaticas adversas; b) os genotipos DA 48, Ruby, Ranchero, CMS XS 345, AG 1011 e AG 1003 apresentaram rendimentos de graos superiores a 2.700 kg/ha.
650 $aRendimento
650 $aSorghum Bicolor
650 $aSorgo Granífero
653 $aBrasil
653 $aPiaui
700 1 $aARAUJO, A. G. de
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio-Norte (CPAMN) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
