| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
|
Data corrente: |
01/08/1992 |
|
Data da última atualização: |
05/12/2023 |
|
Autoria: |
STACY, B. D.; WARNER, A. C. I. |
|
Título: |
Balances of water and sodium in the rumen during feeding: osmotic stimulation of sodium absortion in the sheep. |
|
Ano de publicação: |
1966 |
|
Fonte/Imprenta: |
Journal Experimental Physiology, v. 51, n. 2, p. 79-93, Apr. 1966. |
|
DOI: |
https://doi.org/10.1113/expphysiol.1966.sp001843 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: When sheep ate a dry ration containing added sodium chloride the concentration of sodium in the rumen liquor did not increase. When solutions containing amounts of sodium similar to those eaten with the feed were administered via rumen fistulæ to fasting sheep, they caused a rise in sodium concentration that was sustained for at least 4 hr. Different results were obtained when the same dose of sodium chloride was given to sheep in which the rumen contents were made hypertonic by the addition of other solutes (potassium chloride or mannitol-urea). Instead of rising, the sodium concentration fell 4 hr. after treatment. Changes in the water content of the rumen were traced with a soluble marker, the 51Cr complex of ethylenediaminetetra-acetic acid. After feeding, but not after solute administration, there was clear-cut evidence of increased entry of body water into the rumen, the dilution rate increasing from 0·07-0·11 hr.-1 to 0·19-0·28 hr.-1. Total salivary secretion was measured in an animal with an ?sophageal fistula and the results indicated that the increased water entry into the rumen was due to stimulation of saliva production on feeding. By making several assumptions, sodium and water balances in the rumen were derived from the experimental data. In the fasting state the calculated sodium absorption was 6-16 m. equiv/ hr.; over the 2 hr. period after feeding or solute administration the value was 36-62 m.equiv/hr. It was concluded that hypertonic conditions, as foumd after feeding or solute loading, stimulate the absorption of sodium from the rumen. The physiological implications of the findings are discussed in terms of the sheep's response to the diversion of sodium and water into the rumen on feeding. MenosAbstract: When sheep ate a dry ration containing added sodium chloride the concentration of sodium in the rumen liquor did not increase. When solutions containing amounts of sodium similar to those eaten with the feed were administered via rumen fistulæ to fasting sheep, they caused a rise in sodium concentration that was sustained for at least 4 hr. Different results were obtained when the same dose of sodium chloride was given to sheep in which the rumen contents were made hypertonic by the addition of other solutes (potassium chloride or mannitol-urea). Instead of rising, the sodium concentration fell 4 hr. after treatment. Changes in the water content of the rumen were traced with a soluble marker, the 51Cr complex of ethylenediaminetetra-acetic acid. After feeding, but not after solute administration, there was clear-cut evidence of increased entry of body water into the rumen, the dilution rate increasing from 0·07-0·11 hr.-1 to 0·19-0·28 hr.-1. Total salivary secretion was measured in an animal with an ?sophageal fistula and the results indicated that the increased water entry into the rumen was due to stimulation of saliva production on feeding. By making several assumptions, sodium and water balances in the rumen were derived from the experimental data. In the fasting state the calculated sodium absorption was 6-16 m. equiv/ hr.; over the 2 hr. period after feeding or solute administration the value was 36-62 m.equiv/hr. It was concluded that hypertonic conditions,... Mostrar Tudo |
|
Palavras-Chave: |
Gastric fistula; Sodium metabolism; Water electrolyte balance. |
|
Thesagro: |
Água; Nutrição; Ovino; Rúmen; Sódio. |
|
Thesaurus Nal: |
Fatty acids; Intestinal absorption; Mannitol; Osmosis; Physiology; Potassium chloride; Ruminant nutrition; Salivation; Sheep feeding; Urea. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
LEADER 02773naa a2200361 a 4500
001 1521716
005 2023-12-05
008 1966 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1113/expphysiol.1966.sp001843$2DOI
100 1 $aSTACY, B. D.
245 $aBalances of water and sodium in the rumen during feeding$bosmotic stimulation of sodium absortion in the sheep.
260 $c1966
520 $aAbstract: When sheep ate a dry ration containing added sodium chloride the concentration of sodium in the rumen liquor did not increase. When solutions containing amounts of sodium similar to those eaten with the feed were administered via rumen fistulæ to fasting sheep, they caused a rise in sodium concentration that was sustained for at least 4 hr. Different results were obtained when the same dose of sodium chloride was given to sheep in which the rumen contents were made hypertonic by the addition of other solutes (potassium chloride or mannitol-urea). Instead of rising, the sodium concentration fell 4 hr. after treatment. Changes in the water content of the rumen were traced with a soluble marker, the 51Cr complex of ethylenediaminetetra-acetic acid. After feeding, but not after solute administration, there was clear-cut evidence of increased entry of body water into the rumen, the dilution rate increasing from 0·07-0·11 hr.-1 to 0·19-0·28 hr.-1. Total salivary secretion was measured in an animal with an ?sophageal fistula and the results indicated that the increased water entry into the rumen was due to stimulation of saliva production on feeding. By making several assumptions, sodium and water balances in the rumen were derived from the experimental data. In the fasting state the calculated sodium absorption was 6-16 m. equiv/ hr.; over the 2 hr. period after feeding or solute administration the value was 36-62 m.equiv/hr. It was concluded that hypertonic conditions, as foumd after feeding or solute loading, stimulate the absorption of sodium from the rumen. The physiological implications of the findings are discussed in terms of the sheep's response to the diversion of sodium and water into the rumen on feeding.
650 $aFatty acids
650 $aIntestinal absorption
650 $aMannitol
650 $aOsmosis
650 $aPhysiology
650 $aPotassium chloride
650 $aRuminant nutrition
650 $aSalivation
650 $aSheep feeding
650 $aUrea
650 $aÁgua
650 $aNutrição
650 $aOvino
650 $aRúmen
650 $aSódio
653 $aGastric fistula
653 $aSodium metabolism
653 $aWater electrolyte balance
700 1 $aWARNER, A. C. I.
773 $tJournal Experimental Physiology$gv. 51, n. 2, p. 79-93, Apr. 1966.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Unidades Centrais. |
|
Data corrente: |
26/09/2001 |
|
Data da última atualização: |
08/09/2004 |
|
Autoria: |
SCHMIDT, G. S.; PACKER, I. U.; DUARTE, F. A. de M.; COSTA, C. N.; AVILA, V. S. de. |
|
Título: |
Formacao de Populacoes-Bases de Aves para Corte. IV. Avaliacao das Caracteristicas Produtivas e Reprodutivas da Linha Femea. |
|
Ano de publicação: |
1991 |
|
Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.26, n.6, p.791-796, jun.1991 |
|
Idioma: |
Português |
|
Conteúdo: |
0 presente trabalho foi conduzido no Centro Nacional de Pesquisa de Suínos e Aves (CNPSA), utilizando as linhas fêmeas de matrizes para corte, provenientes de um cruzamento dialéfico entre quatro linhagens comerciais denominadas, PI, P2, P3 e P4, onde os números de 1 a 4 identificam origens. Efetuou-se a avaliação dos cruzamentos quanto à taxa de postura e às características reprodutivas. Foram observadas diferenças significativas entre os cruzamentos, para as características produção de ovos, eclodibilidade e nascimento. A capacidade geral de combinação foi significativa para todas as características avaliadas. A capacidade específica de combinação e efeitos recíprocos não foram significativos, respectivamente, para fertilidade e eclodibilidade. 0 efeito da heterose foi significativo para as características produtivas, variando de 1,88% a 11,63% e 1,02% a 12,02%, respectivamente, para produção de ovoslaveldia e produção de ovoslave alojada. As linhagens comerciais PI, P2 e P3 parecem ser as mais indicadas na formação da população-base para linha fêmea. |
|
Palavras-Chave: |
características reprodutivas; cruzamento dialéfico; matrizes de corte; produção de ovos. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/20850/1/pab04_jun_91.pdf
|
|
Marc: |
LEADER 01803naa a2200217 a 4500
001 1105813
005 2004-09-08
008 1991 bl uuuu u00u1 u #d
100 1 $aSCHMIDT, G. S.
245 $aFormacao de Populacoes-Bases de Aves para Corte. IV. Avaliacao das Caracteristicas Produtivas e Reprodutivas da Linha Femea.
260 $c1991
520 $a0 presente trabalho foi conduzido no Centro Nacional de Pesquisa de Suínos e Aves (CNPSA), utilizando as linhas fêmeas de matrizes para corte, provenientes de um cruzamento dialéfico entre quatro linhagens comerciais denominadas, PI, P2, P3 e P4, onde os números de 1 a 4 identificam origens. Efetuou-se a avaliação dos cruzamentos quanto à taxa de postura e às características reprodutivas. Foram observadas diferenças significativas entre os cruzamentos, para as características produção de ovos, eclodibilidade e nascimento. A capacidade geral de combinação foi significativa para todas as características avaliadas. A capacidade específica de combinação e efeitos recíprocos não foram significativos, respectivamente, para fertilidade e eclodibilidade. 0 efeito da heterose foi significativo para as características produtivas, variando de 1,88% a 11,63% e 1,02% a 12,02%, respectivamente, para produção de ovoslaveldia e produção de ovoslave alojada. As linhagens comerciais PI, P2 e P3 parecem ser as mais indicadas na formação da população-base para linha fêmea.
653 $acaracterísticas reprodutivas
653 $acruzamento dialéfico
653 $amatrizes de corte
653 $aprodução de ovos
700 1 $aPACKER, I. U.
700 1 $aDUARTE, F. A. de M.
700 1 $aCOSTA, C. N.
700 1 $aAVILA, V. S. de
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.26, n.6, p.791-796, jun.1991
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
