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Registro Completo |
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
17/02/2022 |
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Data da última atualização: |
17/02/2022 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SILVA, A. B. da; MONTEIRO, R. A. C.; CARVALHO, C. A. B. de; BOMFIM, L. K. V. de; MENDES, C. A. |
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Afiliação: |
ALINE BARROS DA SILVA, UFRRJ, Seropedica-RJ; ROBERTA APARECIDA C MONTEIRO, CPAMT; CARLOS AUGUSTO BRANDÃO DE CARVALHO, UFRRJ, Seropedica-RJ; LARISSA KAROLINE VIEIRA DE BOMFIM, UFMT, Sinop-MT; CLEUNICE APARECIDA MENDES, UFMT, Sinop-MT. |
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Título: |
Vacas leiteiras buscam por sombra em horas mais quentes do dia em sistemas silvipastoris. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: ENCONTRO DE CIÊNCIA E TECNOLOGIAS AGROSSUSTENTÁVEIS, 2.; JORNADA CIENTÍFICA DA EMBRAPA AGROSSILVIPASTORIL, 7., 2018. Sinop, MT. Resumos... Sinop, MT: Embrapa Agrossilpastoril, 2018. p. 92-95. |
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Idioma: |
Português |
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Conteúdo: |
No ambiente de pastagem a presença de árvores tem sido uma alternativa favorável para reduzir o desconforto térmico dos animais e melhorar a produção animal, principalmente em regiões com elevadas temperaturas e maior incidência de radiação solar, que podem levar a maioria das raças de bovinos a sofrer estresse térmico e reduzir o seu desempenho (Perissinotto et al., 2007; Souza et al., 2007). Contudo, os bovinos conseguem identificar locais sombreados que oferecem uma maior proteção contra a radiação solar, a fim de amenizarem o estresse calórico ao qual se encontram (Schutz et al., 2009). Desta forma, objetivo desse trabalho foi avaliar a busca por sombra de vacas leiteiras durante o dia no período de verão na região norte de Mato Grosso. |
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Palavras-Chave: |
Conforto térmico; Integração pecuária-floresta; IPF; Sinop-MT; Sistema silvipastoril. |
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Thesagro: |
Vaca Leiteira. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/231483/1/2018-cpamt-rac-vacas-leiteiras-buscam-sombra-horas-mais-quentes-dia-sistemas-silvipastoris-p-92-95.pdf
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Marc: |
LEADER 01625nam a2200229 a 4500
001 2140185
005 2022-02-17
008 2018 bl uuuu u00u1 u #d
100 1 $aSILVA, A. B. da
245 $aVacas leiteiras buscam por sombra em horas mais quentes do dia em sistemas silvipastoris.$h[electronic resource]
260 $aIn: ENCONTRO DE CIÊNCIA E TECNOLOGIAS AGROSSUSTENTÁVEIS, 2.; JORNADA CIENTÍFICA DA EMBRAPA AGROSSILVIPASTORIL, 7., 2018. Sinop, MT. Resumos... Sinop, MT: Embrapa Agrossilpastoril, 2018. p. 92-95.$c2018
520 $aNo ambiente de pastagem a presença de árvores tem sido uma alternativa favorável para reduzir o desconforto térmico dos animais e melhorar a produção animal, principalmente em regiões com elevadas temperaturas e maior incidência de radiação solar, que podem levar a maioria das raças de bovinos a sofrer estresse térmico e reduzir o seu desempenho (Perissinotto et al., 2007; Souza et al., 2007). Contudo, os bovinos conseguem identificar locais sombreados que oferecem uma maior proteção contra a radiação solar, a fim de amenizarem o estresse calórico ao qual se encontram (Schutz et al., 2009). Desta forma, objetivo desse trabalho foi avaliar a busca por sombra de vacas leiteiras durante o dia no período de verão na região norte de Mato Grosso.
650 $aVaca Leiteira
653 $aConforto térmico
653 $aIntegração pecuária-floresta
653 $aIPF
653 $aSinop-MT
653 $aSistema silvipastoril
700 1 $aMONTEIRO, R. A. C.
700 1 $aCARVALHO, C. A. B. de
700 1 $aBOMFIM, L. K. V. de
700 1 $aMENDES, C. A.
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
07/03/2013 |
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Data da última atualização: |
07/03/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
GOMES, R. da C.; MEYER, P. M.; CASTRO, A. L. de; NETTO, A. S.; RODRIGUES, P. H. M. |
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Afiliação: |
RODRIGO DA COSTA GOMES, CNPGC; Paula Marques Meyer, IBGE; Ari Luiz de Castro, Departamento de Nutrição e Produção Animal, FMVZ/USP.; Arlindo Saran Netto, Departamento de Zootecnia, FZEA/USP; Paulo Henrique Mazza Rodrigues, Departamento de Nutrição e Produção Animal, FMVZ/USP. |
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Título: |
Accuracy, precision and robustness of different methods to obtain samples from silages in fermentation studies. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v.41, n.6, p.1369-1377, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to evaluate accuracy, precision and robustness of two methods to obtain silage samples, in comparison with extraction of liquor by manual screw-press. Wet brewery residue alone or combined with soybean hulls and citrus pulp were ensiled in laboratory silos. Liquor was extracted by a manual screw-press and a 2-mL aliquot was fixed with 0.4 mL formic acid. Two 10-g silage samples from each silo were diluted in 20 mL deionized water or 17% formic acid solution (alternative methods). Aliquots obtained by the three methods were used to determine the silage contents of fermentation end-products. The accuracy of the alternative methods was evaluated by comparing mean bias of estimates obtained by manual screw-press and by alternative methods, whereas precision was assessed by the root mean square prediction error and the residual error. Robustness was determined by studying the interaction between bias and chemical components, pH, in vitro dry matter digestibility (IVDMD) and buffer capacity. The 17% formic acid method was more accurate for estimating acetic, butyric and lactic acids, although it resulted in low overestimates of propionic acid and underestimates of ethanol. The deionized water method overestimated acetic and propionic acids and slightly underestimated ethanol. The 17% formic acid method was more precise than deionized water for estimating all organic acids and ethanol. The robustness of each method with respect to variation in the silage chemical composition, IVDMD and pH is dependent on the fermentation end-product at evaluation. The robustness of the alternative methods seems to be critical at the determination of lactic acid and ethanol contents. MenosThe objective of this study was to evaluate accuracy, precision and robustness of two methods to obtain silage samples, in comparison with extraction of liquor by manual screw-press. Wet brewery residue alone or combined with soybean hulls and citrus pulp were ensiled in laboratory silos. Liquor was extracted by a manual screw-press and a 2-mL aliquot was fixed with 0.4 mL formic acid. Two 10-g silage samples from each silo were diluted in 20 mL deionized water or 17% formic acid solution (alternative methods). Aliquots obtained by the three methods were used to determine the silage contents of fermentation end-products. The accuracy of the alternative methods was evaluated by comparing mean bias of estimates obtained by manual screw-press and by alternative methods, whereas precision was assessed by the root mean square prediction error and the residual error. Robustness was determined by studying the interaction between bias and chemical components, pH, in vitro dry matter digestibility (IVDMD) and buffer capacity. The 17% formic acid method was more accurate for estimating acetic, butyric and lactic acids, although it resulted in low overestimates of propionic acid and underestimates of ethanol. The deionized water method overestimated acetic and propionic acids and slightly underestimated ethanol. The 17% formic acid method was more precise than deionized water for estimating all organic acids and ethanol. The robustness of each method with respect to variation in the si... Mostrar Tudo |
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Thesagro: |
Silagem. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/78416/1/0000007017-Gomes-et-al-2012-RBZ.pdf
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Marc: |
LEADER 02292naa a2200181 a 4500
001 1952505
005 2013-03-07
008 2012 bl uuuu u00u1 u #d
100 1 $aGOMES, R. da C.
245 $aAccuracy, precision and robustness of different methods to obtain samples from silages in fermentation studies.$h[electronic resource]
260 $c2012
520 $aThe objective of this study was to evaluate accuracy, precision and robustness of two methods to obtain silage samples, in comparison with extraction of liquor by manual screw-press. Wet brewery residue alone or combined with soybean hulls and citrus pulp were ensiled in laboratory silos. Liquor was extracted by a manual screw-press and a 2-mL aliquot was fixed with 0.4 mL formic acid. Two 10-g silage samples from each silo were diluted in 20 mL deionized water or 17% formic acid solution (alternative methods). Aliquots obtained by the three methods were used to determine the silage contents of fermentation end-products. The accuracy of the alternative methods was evaluated by comparing mean bias of estimates obtained by manual screw-press and by alternative methods, whereas precision was assessed by the root mean square prediction error and the residual error. Robustness was determined by studying the interaction between bias and chemical components, pH, in vitro dry matter digestibility (IVDMD) and buffer capacity. The 17% formic acid method was more accurate for estimating acetic, butyric and lactic acids, although it resulted in low overestimates of propionic acid and underestimates of ethanol. The deionized water method overestimated acetic and propionic acids and slightly underestimated ethanol. The 17% formic acid method was more precise than deionized water for estimating all organic acids and ethanol. The robustness of each method with respect to variation in the silage chemical composition, IVDMD and pH is dependent on the fermentation end-product at evaluation. The robustness of the alternative methods seems to be critical at the determination of lactic acid and ethanol contents.
650 $aSilagem
700 1 $aMEYER, P. M.
700 1 $aCASTRO, A. L. de
700 1 $aNETTO, A. S.
700 1 $aRODRIGUES, P. H. M.
773 $tRevista Brasileira de Zootecnia$gv.41, n.6, p.1369-1377, 2012.
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