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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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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
08/01/2020 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ORNELAS, L. T. C.; SILVA, D. C.; TOMICH, T. R.; CAMPOS, M. M.; MACHADO, F. S.; FERREIRA, A. L.; MAURICIO, R. M.; PEREIRA, L. G. R. |
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Afiliação: |
L.T.C. Ornelas; D.C. Silva; THIERRY RIBEIRO TOMICH, CNPGL; MARIANA MAGALHAES CAMPOS, CNPGL; FERNANDA SAMARINI MACHADO, CNPGL; A.L. Ferreira; R.M. Maurício; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL. |
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Título: |
Differences in methane production, yield and intensity and its effects on metabolism of dairy heifers. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Science of The Total Environment, v. 689, p. 1133-1140, 2019. |
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DOI: |
https://doi.org/10.1016/j.scitotenv.2019.06.489 |
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Idioma: |
Inglês |
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Conteúdo: |
The effects of divergent phenotypic classification in crossbreed Holstein × Gyr dairy heifers for methane emissions in relation to performance, digestibility, energy and nitrogen partition, blood metabolites and temperature of body surface were evaluated. Thirty-five heifers were classified as high and low emission for CH4 production (g/day), yield (g/kg dry matter intake) and intensity (g/kg average daily gain). Digestibility was evaluated by total collection of feces and urine. Gas exchanges were obtained in open-circuit respiratory chambers. A completely randomized design was used and divergent groups were compared by Fisher's test. No differences were found in intake traits between groups of CH4 production and intensity. The low yield group had higher intake. For digestibility and temperature at different body sites were no differences between variables. High production group had higher energy losses as methane and heat production. Low intensity group had higher digestible energy, energy balance and ratio between metabolizable and digestible energy. Urinary nitrogen was 14.3% lower for low production group. There was a difference between methane yield divergent groups for nitrogen intake, digestible and retained. Energy and nitrogen partitioning traits are correlated to the animals divergent for methane production and yield. The low production group presented lower blood insulin concentration. It was not possible to identify divergent animals for CH4 emission using the infrared thermography technique. MenosThe effects of divergent phenotypic classification in crossbreed Holstein × Gyr dairy heifers for methane emissions in relation to performance, digestibility, energy and nitrogen partition, blood metabolites and temperature of body surface were evaluated. Thirty-five heifers were classified as high and low emission for CH4 production (g/day), yield (g/kg dry matter intake) and intensity (g/kg average daily gain). Digestibility was evaluated by total collection of feces and urine. Gas exchanges were obtained in open-circuit respiratory chambers. A completely randomized design was used and divergent groups were compared by Fisher's test. No differences were found in intake traits between groups of CH4 production and intensity. The low yield group had higher intake. For digestibility and temperature at different body sites were no differences between variables. High production group had higher energy losses as methane and heat production. Low intensity group had higher digestible energy, energy balance and ratio between metabolizable and digestible energy. Urinary nitrogen was 14.3% lower for low production group. There was a difference between methane yield divergent groups for nitrogen intake, digestible and retained. Energy and nitrogen partitioning traits are correlated to the animals divergent for methane production and yield. The low production group presented lower blood insulin concentration. It was not possible to identify divergent animals for CH4 emission using the i... Mostrar Tudo |
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Palavras-Chave: |
Greenhouse gas; Nitrogen utilization; Respiration assay. |
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Thesaurus Nal: |
Calorimetry; Climate change. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02393naa a2200277 a 4500
001 2118375
005 2024-02-06
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scitotenv.2019.06.489$2DOI
100 1 $aORNELAS, L. T. C.
245 $aDifferences in methane production, yield and intensity and its effects on metabolism of dairy heifers.$h[electronic resource]
260 $c2019
520 $aThe effects of divergent phenotypic classification in crossbreed Holstein × Gyr dairy heifers for methane emissions in relation to performance, digestibility, energy and nitrogen partition, blood metabolites and temperature of body surface were evaluated. Thirty-five heifers were classified as high and low emission for CH4 production (g/day), yield (g/kg dry matter intake) and intensity (g/kg average daily gain). Digestibility was evaluated by total collection of feces and urine. Gas exchanges were obtained in open-circuit respiratory chambers. A completely randomized design was used and divergent groups were compared by Fisher's test. No differences were found in intake traits between groups of CH4 production and intensity. The low yield group had higher intake. For digestibility and temperature at different body sites were no differences between variables. High production group had higher energy losses as methane and heat production. Low intensity group had higher digestible energy, energy balance and ratio between metabolizable and digestible energy. Urinary nitrogen was 14.3% lower for low production group. There was a difference between methane yield divergent groups for nitrogen intake, digestible and retained. Energy and nitrogen partitioning traits are correlated to the animals divergent for methane production and yield. The low production group presented lower blood insulin concentration. It was not possible to identify divergent animals for CH4 emission using the infrared thermography technique.
650 $aCalorimetry
650 $aClimate change
653 $aGreenhouse gas
653 $aNitrogen utilization
653 $aRespiration assay
700 1 $aSILVA, D. C.
700 1 $aTOMICH, T. R.
700 1 $aCAMPOS, M. M.
700 1 $aMACHADO, F. S.
700 1 $aFERREIRA, A. L.
700 1 $aMAURICIO, R. M.
700 1 $aPEREIRA, L. G. R.
773 $tScience of The Total Environment$gv. 689, p. 1133-1140, 2019.
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