Availability of macro and microelements from edible domestic waste fed to sheep.
Young Awassi rams fitted with rumen cannula and T-shaped cannulas in duodenum and terminal ileum were used to study net absorption of calcium, phosphorus, magnesium, zinc, manganese, and copper from edible domestic waste in comparison with a conventional concentrate diet. Mean net absorptions (% of intake) of calcium, phosphorus, and magnesium from edible domestic waste and control diets were 15.3, -.9; 54.4, 37.0; and 46.4, 58.8. The small intestine was the major site for calcium and phosphorus absorption and the rumen for absorption of magnesium. Net absorption of zinc, manganese, and copper was low in both diets, probably as a result of excessive supply and low physiological demands. There was a net gain of manganese and copper and a net loss of zinc in the stomachs. In addition to potential for energy and protein, edible domestic waste supplies macro and microelements for ruminants, and thus, it can be regarded as a complete concentrate diet.
D000818:Animals; D001682:Biological Availability; D002118:Calcium / Q000378:metabolism; D003300:Copper / Q000378:metabolism; D004602:Elements / Q000378:metabolism*; D005735:Garbage; D007408:Intestinal Absorption; D007854:Lead / Q000378:metabolism; D008274:Magnesium / Q000378:metabolism; D008297:Male; D008345:Manganese / Q000378:metabolism; D010758:Phosphorus / Q000378:metabolism; D012037:Refuse Disposal; D012756:Sheep / Q000378:metabolism*; D015032:Zinc / Q000378:metabolism
D004602:Elements; D010758:Phosphorus; D007854:Lead; D008345:Manganese; D003300:Copper; D008274:Magnesium; D015032:Zinc; D002118:Calcium