Nutritional Articles

Effects of varying levels of phytase supplementation on dry matter and phosphorus digestibility in horses fed a common textured ration.

Published: 2003-01-31

Brief content of the article
The effect of phytase supplementation on dry mater and phosphorus (P) digestibility was studied in mature horses. They were fed a 0, 300, 600 and 900 FTU/kg added to the basal ration in a a 4x4 Latin square design experiment. The basal ration consisted of a textured concentrate of rolled corn, oats, and soybean meal fed in a 50:50 ratio with native prairy grass hay. Total feces and urine were collected during a 72-hour colection period. Feed samples were collected randomly during the trial. The results showed no significant difference in feacal output, dry matter digestibility and urinary output and P-digestibility was also not improved.
Keywords: phytase; phosphorus availability; phytate; digestibility; minerals.

Reference
Patterson, D.P. Cooper, S.R., Freeman, D.W. and Teeter, R.G. 2002. Effects of varying levels of phytase supplementation on dry matter and phosphorus digestibility in horses fed a common textured ration. J. Equine Vet. Sci. 22: 456-459

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