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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
21/07/2023 |
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Autoria: |
ABDEL-HAFFEZ, H.M.; MANAS-ALMENDROS, M.; ROSS, R.; CARE, A. D. |
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Título: |
Effects of dietary phosphorus and calcium on the intestinal absorption of Ca in sheep. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
The British Journal of Nutrition, v. 47, n. 1, p. 69-77, Jan. 1982. |
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DOI: |
10.1079/bjn19820010. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: 1. Wether sheep were used, some of which were prepared with a Thiry-Vella loop of jejunum. The long-term use of these loops was ensured by regular perfusion with fresh nutrient solution. 2. The net calcium absorption rate from a Thirty-Vella loop of jejunum increased with increasing intraluminal Ca concentration and was increased by the addition of 1 alpha-hydroxy-cholecalciferol (3 micrograms/l) to the loop fluid. 3. When the diet of sheep was changed from one which was normal in Ca to a diet low in Ca there was an increase in the efficiency of net Ca absorption from the jejunal loop. This dietary change was accompanied by an increase in the circulating concentration of 1,25-dihydroxy-cholecalciferol (1,25(OH)2D3). 4. An intravenous infusion of the Ca chelating agent EDTA increased the efficiency of net Ca absorption from the jejunal loop. The use of 47Ca demonstrated that this reflected an increase in the true absorption rate of Ca. 5. Dietary phosphorus deficiency reduced the efficiency of intestinal Ca absorption and was associated with a reduction in the plasma concentration of 1,25(OH)2D3. |
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Palavras-Chave: |
Edetic Acid; Mineral nutrients; Nutricao mineral. |
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Thesagro: |
Dieta; Fisiologia; Nutrição; Ovino. |
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Thesaurus Nal: |
Calcitriol; Dietary mineral supplements; Hydroxycholecalciferols; Metabolism; Phosphorus; Ruminant nutrition; Sheep. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02073naa a2200337 a 4500
001 1519665
005 2023-07-21
008 1982 bl uuuu u00u1 u #d
024 7 $a10.1079/bjn19820010.$2DOI
100 1 $aABDEL-HAFFEZ, H.M.
245 $aEffects of dietary phosphorus and calcium on the intestinal absorption of Ca in sheep.$h[electronic resource]
260 $c1982
520 $aAbstract: 1. Wether sheep were used, some of which were prepared with a Thiry-Vella loop of jejunum. The long-term use of these loops was ensured by regular perfusion with fresh nutrient solution. 2. The net calcium absorption rate from a Thirty-Vella loop of jejunum increased with increasing intraluminal Ca concentration and was increased by the addition of 1 alpha-hydroxy-cholecalciferol (3 micrograms/l) to the loop fluid. 3. When the diet of sheep was changed from one which was normal in Ca to a diet low in Ca there was an increase in the efficiency of net Ca absorption from the jejunal loop. This dietary change was accompanied by an increase in the circulating concentration of 1,25-dihydroxy-cholecalciferol (1,25(OH)2D3). 4. An intravenous infusion of the Ca chelating agent EDTA increased the efficiency of net Ca absorption from the jejunal loop. The use of 47Ca demonstrated that this reflected an increase in the true absorption rate of Ca. 5. Dietary phosphorus deficiency reduced the efficiency of intestinal Ca absorption and was associated with a reduction in the plasma concentration of 1,25(OH)2D3.
650 $aCalcitriol
650 $aDietary mineral supplements
650 $aHydroxycholecalciferols
650 $aMetabolism
650 $aPhosphorus
650 $aRuminant nutrition
650 $aSheep
650 $aDieta
650 $aFisiologia
650 $aNutrição
650 $aOvino
653 $aEdetic Acid
653 $aMineral nutrients
653 $aNutricao mineral
700 1 $aMANAS-ALMENDROS, M.
700 1 $aROSS, R.
700 1 $aCARE, A. D.
773 $tThe British Journal of Nutrition$gv. 47, n. 1, p. 69-77, Jan. 1982.
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Embrapa Caprinos e Ovinos (CNPC) |
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| 1. |  | CUNHA NETO, L. O.; CUNHA, I. de C. M. da; SOUSA, L. N. S. de; LUCAS, F. de O.; GURGEL, F. de L. Qualidade de frutos de laranjeira 'pêra' em combinação com diferentes porta-enxertos em Capitão Poço - PA. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 23., 2019, Belém, PA. Anais. Belém, PA: Embrapa Amazônia Oriental, 2019. p. 25-30.| Tipo: Artigo em Anais de Congresso |
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