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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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Embrapa Gado de Leite (CNPGL) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
25/08/2004 |
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Data da última atualização: |
16/10/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
SOUZA, M. P. de; QUEIROZ, M. A. de; POSSÍDIO, E. L. de; PEREIRA, F. A.; NUNES, R. F. de M. |
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Afiliação: |
Maria Petronila de Souza; MANOEL ABÍLIO DE QUEIROZ, UNEB; EDSON LUSTOSA DE POSSIDIO, CPATSA; Francisco Alves Pereira; REGINA FERRO DE MELO NUNES, CPATSA. |
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Título: |
Study of flowering and alternate bearing of mango varieties in the São Francisco Valley. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Acta Horticulturae, Leuven, n. 645, p. 353-355, feb. 2004. |
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Idioma: |
Inglês |
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Notas: |
Edição do Proceedings of the Seventh International Mango Symposium, Recife, Sep. 2002. |
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Conteúdo: |
Mango varieties have been evaluated in Brazil for only a few cycles of production. Therefore some mango varieties were evaluated under irrigation and for a longer period of production. Nineteen mango varieties were evaluated for eighteen years (1979 to 1998) at the Mandacaru Experimental Station, Juazeiro - BA. The plants were spaced 10 m x 10 m and the varieties were grafted on Espada. The average temperature eC), rainfall (mm), relative humidity (%), evaporation (mm/d),sunshine hours (h/d) and solar radiation (h/d) during the experiment were recorded. Flowering dates for ali varieties in each year as well as fruit yield were registered for the eighteen cycles of production without use of growth regulators. Somevarieties started flowering after two years (Alphonso, Amarelinha, Bourbon, rasil, Carlotão, Comprida Roxa, Florigon, Itiúba and Irwin) while Dusheri and Langra after nine and ten years, respectively. The varieties flowered from June to August, some of them presenting the typical pattern of alternate bearing (Maya, Haden, Itiúba, Bourbon, Irwin and Tommy Atkins). Some varieties presented an erratic pattern of production (Carlotão, Florigon, Kensington, Surpresa, Momi-k, Dusheri and Langra) while the other varieties were intermediate in production pattern (Alphonso, Amarelinha, Comprida Roxa, P. de Amoreira, ZiII and Brasil). Ali can be recommended, except Langra and Dusheri, depending on the market preferences, since growth plant regulators are applied to give better uniformity in Ooweringand fruit production. MenosMango varieties have been evaluated in Brazil for only a few cycles of production. Therefore some mango varieties were evaluated under irrigation and for a longer period of production. Nineteen mango varieties were evaluated for eighteen years (1979 to 1998) at the Mandacaru Experimental Station, Juazeiro - BA. The plants were spaced 10 m x 10 m and the varieties were grafted on Espada. The average temperature eC), rainfall (mm), relative humidity (%), evaporation (mm/d),sunshine hours (h/d) and solar radiation (h/d) during the experiment were recorded. Flowering dates for ali varieties in each year as well as fruit yield were registered for the eighteen cycles of production without use of growth regulators. Somevarieties started flowering after two years (Alphonso, Amarelinha, Bourbon, rasil, Carlotão, Comprida Roxa, Florigon, Itiúba and Irwin) while Dusheri and Langra after nine and ten years, respectively. The varieties flowered from June to August, some of them presenting the typical pattern of alternate bearing (Maya, Haden, Itiúba, Bourbon, Irwin and Tommy Atkins). Some varieties presented an erratic pattern of production (Carlotão, Florigon, Kensington, Surpresa, Momi-k, Dusheri and Langra) while the other varieties were intermediate in production pattern (Alphonso, Amarelinha, Comprida Roxa, P. de Amoreira, ZiII and Brasil). Ali can be recommended, except Langra and Dusheri, depending on the market preferences, since growth plant regulators are applied to give better... Mostrar Tudo |
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Palavras-Chave: |
Avaliação. |
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Thesagro: |
Fruta; Irrigação; Manga; Mangifera Indica; Melhoramento; Produção; Variedade. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02376naa a2200277 a 4500
001 1154049
005 2018-10-16
008 2004 bl uuuu u00u1 u #d
100 1 $aSOUZA, M. P. de
245 $aStudy of flowering and alternate bearing of mango varieties in the São Francisco Valley.
260 $c2004
500 $aEdição do Proceedings of the Seventh International Mango Symposium, Recife, Sep. 2002.
520 $aMango varieties have been evaluated in Brazil for only a few cycles of production. Therefore some mango varieties were evaluated under irrigation and for a longer period of production. Nineteen mango varieties were evaluated for eighteen years (1979 to 1998) at the Mandacaru Experimental Station, Juazeiro - BA. The plants were spaced 10 m x 10 m and the varieties were grafted on Espada. The average temperature eC), rainfall (mm), relative humidity (%), evaporation (mm/d),sunshine hours (h/d) and solar radiation (h/d) during the experiment were recorded. Flowering dates for ali varieties in each year as well as fruit yield were registered for the eighteen cycles of production without use of growth regulators. Somevarieties started flowering after two years (Alphonso, Amarelinha, Bourbon, rasil, Carlotão, Comprida Roxa, Florigon, Itiúba and Irwin) while Dusheri and Langra after nine and ten years, respectively. The varieties flowered from June to August, some of them presenting the typical pattern of alternate bearing (Maya, Haden, Itiúba, Bourbon, Irwin and Tommy Atkins). Some varieties presented an erratic pattern of production (Carlotão, Florigon, Kensington, Surpresa, Momi-k, Dusheri and Langra) while the other varieties were intermediate in production pattern (Alphonso, Amarelinha, Comprida Roxa, P. de Amoreira, ZiII and Brasil). Ali can be recommended, except Langra and Dusheri, depending on the market preferences, since growth plant regulators are applied to give better uniformity in Ooweringand fruit production.
650 $aFruta
650 $aIrrigação
650 $aManga
650 $aMangifera Indica
650 $aMelhoramento
650 $aProdução
650 $aVariedade
653 $aAvaliação
700 1 $aQUEIROZ, M. A. de
700 1 $aPOSSÍDIO, E. L. de
700 1 $aPEREIRA, F. A.
700 1 $aNUNES, R. F. de M.
773 $tActa Horticulturae, Leuven$gn. 645, p. 353-355, feb. 2004.
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