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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
29/06/2017 |
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Data da última atualização: |
29/06/2017 |
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Autoria: |
TAGARI, H.; BERGMAN, E. N. |
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Título: |
Intestinal disappearance and portal blood appearance of amino acids in sheep. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
The Journal of Nutrition, v. 108, n. 5, p. 790-803, May, 1978. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The intestinal disappearance and simultaneous arterial inflow and portal appearance of individual amino acids (AA) were studied in sheep fed closed formula, unrefined high (H.P.) and medium (M.P.) protein diets. Gut contents were sampled through four intestinal cannulae and blood was sampled through portal and arterial catheters. The amount of total and amino N that was fed decreased on passage into the duodenum but increased in the jejunum, and then again decreased steadily towards the terminal ileum. The amounts of AA passing into the duodenum were significantly higher when the H.P. rather than the M.P. diet was fed. No dietary differences in AA were noted at the ileo-cecal junction, however, meaning that greater amounts of AA disappeared from the intestine when the H.P. diet was fed. The amounts of AA appearing in portal blood were 30 to 80% of those disappearing from the intestine and were greater in sheep fed the H.P. diet. The amount of AA passing into the duodenum also significantly affected the concentrations of AA in arterial blood. Less [U-14C]glutamic acid than [U-14C]alanine, that was infused into abomasum, was detected in the digesta passing through the pylorus. The same also was true for the unlabeled free form of glutamic acid. The portal appearance of both unlabeled and labeled glutamic acid was negligible, but that of alanine was considerable. Variable amounts of [14C]citrulline, [14C]arginine, and [14C]urea were detected in the blood following the abomasal infusions of labeled glutamic acid or alanine. The portal appearance of these labeled metabolites was always negative, however, implying that they were utilized, and not formed, by gut tissues. MenosAbstract: The intestinal disappearance and simultaneous arterial inflow and portal appearance of individual amino acids (AA) were studied in sheep fed closed formula, unrefined high (H.P.) and medium (M.P.) protein diets. Gut contents were sampled through four intestinal cannulae and blood was sampled through portal and arterial catheters. The amount of total and amino N that was fed decreased on passage into the duodenum but increased in the jejunum, and then again decreased steadily towards the terminal ileum. The amounts of AA passing into the duodenum were significantly higher when the H.P. rather than the M.P. diet was fed. No dietary differences in AA were noted at the ileo-cecal junction, however, meaning that greater amounts of AA disappeared from the intestine when the H.P. diet was fed. The amounts of AA appearing in portal blood were 30 to 80% of those disappearing from the intestine and were greater in sheep fed the H.P. diet. The amount of AA passing into the duodenum also significantly affected the concentrations of AA in arterial blood. Less [U-14C]glutamic acid than [U-14C]alanine, that was infused into abomasum, was detected in the digesta passing through the pylorus. The same also was true for the unlabeled free form of glutamic acid. The portal appearance of both unlabeled and labeled glutamic acid was negligible, but that of alanine was considerable. Variable amounts of [14C]citrulline, [14C]arginine, and [14C]urea were detected in the blood following the... Mostrar Tudo |
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Thesaurus Nal: |
Alanine; Amino acids; Animal nutrition; Blood; Dosage; Glutamates; Intestines; Nutrients; portal vein; Proteins; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02378naa a2200265 a 4500
001 2071726
005 2017-06-29
008 1978 bl uuuu u00u1 u #d
100 1 $aTAGARI, H.
245 $aIntestinal disappearance and portal blood appearance of amino acids in sheep.
260 $c1978
520 $aAbstract: The intestinal disappearance and simultaneous arterial inflow and portal appearance of individual amino acids (AA) were studied in sheep fed closed formula, unrefined high (H.P.) and medium (M.P.) protein diets. Gut contents were sampled through four intestinal cannulae and blood was sampled through portal and arterial catheters. The amount of total and amino N that was fed decreased on passage into the duodenum but increased in the jejunum, and then again decreased steadily towards the terminal ileum. The amounts of AA passing into the duodenum were significantly higher when the H.P. rather than the M.P. diet was fed. No dietary differences in AA were noted at the ileo-cecal junction, however, meaning that greater amounts of AA disappeared from the intestine when the H.P. diet was fed. The amounts of AA appearing in portal blood were 30 to 80% of those disappearing from the intestine and were greater in sheep fed the H.P. diet. The amount of AA passing into the duodenum also significantly affected the concentrations of AA in arterial blood. Less [U-14C]glutamic acid than [U-14C]alanine, that was infused into abomasum, was detected in the digesta passing through the pylorus. The same also was true for the unlabeled free form of glutamic acid. The portal appearance of both unlabeled and labeled glutamic acid was negligible, but that of alanine was considerable. Variable amounts of [14C]citrulline, [14C]arginine, and [14C]urea were detected in the blood following the abomasal infusions of labeled glutamic acid or alanine. The portal appearance of these labeled metabolites was always negative, however, implying that they were utilized, and not formed, by gut tissues.
650 $aAlanine
650 $aAmino acids
650 $aAnimal nutrition
650 $aBlood
650 $aDosage
650 $aGlutamates
650 $aIntestines
650 $aNutrients
650 $aportal vein
650 $aProteins
650 $aSheep
700 1 $aBERGMAN, E. N.
773 $tThe Journal of Nutrition$gv. 108, n. 5, p. 790-803, May, 1978.
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Embrapa Caprinos e Ovinos (CNPC) |
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| 4. |  | ROSSI, A. de S.; MANGABEIRA, J. A. de C.; ROMEIRO, A. R.; CORRALES, F. M. Rede Regional de Agroecologia - Um Plano Piloto: Um Sistema de Informações Integradas na Gestão Rural Sustentável CONGRESSO BRASILEIRO DE AGROECOLOGIA, 2.; SEMINÁRIO INTERNACIONAL SOBRE AGROECOLOGIA, 5.; SEMINÁRIO ESTADUAL SOBRE AGROECOLOGIA, 6., 2004, Porto Alegre. Agrobiodiversidade: base para sociedades sustentáveis: anais. Porto Alegre, 2004. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
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| Registros recuperados : 5 | |
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