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Type of publication: Journal Article
Type of document: Full Paper

Year: 2008

Authors: Metzler, BU; Mosenthin, R; Baumgärtel, T; Rodehutscord, M

Title: The effect of dietary phosphorus and calcium level, phytase supplementation, and ileal infusion of pectin on the chemical composition and carbohydrase activity of fecal bacteria and the level of microbial metabolites in the gastrointestinal tract of pigs.

Source: J Anim Sci. 2008; 86(7):1544-1555

Authors Vetmeduni Vienna:

Metzler-Zebeli Barbara

Two experiments with growing pigs were conducted to determine the effects of dietary P and Ca level, phytase supplementation, and ileal pectin infusion on ileal and fecal P and Ca balance, chemical composition of fecal mixed bacterial mass (MBM), and bacterial metabolic activity. Pigs (initial BW = 30 kg) were fitted with simple T-cannulas at the distal ileum. They were fed a low-P corn-soybean meal control diet (3 g of P/kg) or the control diet supplemented with monocalcium phosphate (MCP; 7 g of P/kg; Exp. 1) or 1,000 FTU phytase/kg (Exp. 2). The daily infusion treatments consisted of 60 g of pectin dissolved in 1.8 L of demineralized water or 1.8 L of demineralized water as the control infusion, infused via the ileal cannula. In each experiment, 8 barrows were assigned to 4 dietary treatments according to a double, incomplete 4 x 2 Latin square. The dietary treatments in Exp. 1 were the control (Con-) diet with water infusion; the control (Con+) diet with pectin infusion; the MCP diet with water infusion; and the MCP diet with pectin infusion. In Exp. 2, the pigs received the same Con- and Con+ treatments as in Exp. 1 and, in addition, the phytase-supplemented diet in combination with water or pectin infusion. After a 15-d adaptation period, feces were collected for 5 d followed by ileal digesta collection for 24 h. In Exp. 1, supplemental MCP increased (P
Keywords Pubmed: 6-Phytase/administration & dosage*
Amino Acids/metabolism
Animal Nutritional Physiological Phenomena/physiology
Calcium Phosphates/administration & dosage
Calcium Phosphates/metabolism
Calcium, Dietary/administration & dosage*
Calcium, Dietary/metabolism
Gastrointestinal Tract/drug effects
Gastrointestinal Tract/metabolism
Gastrointestinal Tract/microbiology*
Glycoside Hydrolases/metabolism*
Ilium/drug effects
Pectins/administration & dosage*
Phosphorus, Dietary/administration & dosage*
Phosphorus, Dietary/metabolism
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