Influence of feeding regimen and protein supplementation on the sites of net absorption of magnesium in sheep

Author:

Grace N. D.,Macrae J. C.

Abstract

1. Sheep prepared with a rumen cannula and with re-entrant cannulas at the proximal duodenum and terminal ileum were given diets of dried grass, and dried grass supplemented with formalin-treated or untreated casein. They were fed either continuously or once daily. Paper impregnated with chromic oxide was given once daily via the rumen fistula.2. The observed daily flows of magnesium at the duodenum and ileum were highly correlated with the corresponding flows of Cr.3. There was a net absorption of Mg from the stomach as well as the intestinal region of all sheep.4. Protein supplementation had no effect on the extent or sites of Mg absorption, but altering the feeding regimen changed the proportions of the net absorption of Mg occurring in the stomach and intestinal regions.

Publisher

Cambridge University Press (CUP)

Subject

Nutrition and Dietetics,Medicine (miscellaneous)

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1. Magnesium;Mineral Nutrition of Livestock;2022-05-30

2. Relationship of Nitrogen Fertilization and Chemical Composition of Forage to Animal Health and Performance;Forage Fertilization;2015-11-02

3. Magnesium in dairy cow nutrition: an overview;Plant and Soil;2013-03-08

4. Magnesium.;Mineral nutrition of livestock;2010

5. Magnesiumabsorption in vitro durch die Pansenschleimhaut von Schafen;Zeitschrift für Tierphysiologie Tierernährung und Futtermittelkunde;2009-10-09

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