Co-Authors:
Solomon, R., Metabolic Unit, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Yosef, E., Metabolic Unit, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Miron, J., Metabolic Unit, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Dror, Y., Department of Biochemistry and Human Nutrition, Faculty of Agriculture, Hebrew University of Jerusalem, Rehovot, Israel
Ben-Ghedalia, D., Metabolic Unit, Institute of Animal Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan, 50250, Israel
Abstract:
Sheep cannulated in the rumen, duodenum and ileum were used to study absorption of minerals from diets: I. barley only (B), and II. 70% (DM basis) barley + 30% SO2 treated wheat straw (B+S). Na and K were highly absorbed from both diets and almost completely recovered in the urine. Ca apparent absorption was low: 12.1% and 13.4% in the B and B+S treatments, respectively. The Mg net absorption in the rumen was significantly higher in diet B than in diet B+S; the difference in total tract apparent absorption of Mg was, however, much smaller and not significant: 44.5% and 38.2% for the B and B+S treatments, respectively. Animal variation in P absorption was very large, ranging from 5% to 66%. There was a trend toward net secretion of Cu, Zn and Mn in the stomachs, the trend being 2-3 times higher in the B+S than B diet. Generally, the apparent absorption of Cu, Zn and Mn was lower in the B+S than B diet; however, the most notable difference was with Cu absorption. © 1991.
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