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Feed Intake of Cattle in Response to Dietary Dilution with Polyethylene¹

University of Wisconsin, Madison²

Abstract

Seventy-eight steers were randomly assigned to various feeding regimens to determine the effects of the addition of nondigestible material (polyethylene) to the diets. The data indicated that energy concentration of the diet is of importance in the regulation of food intake. A trend toward compensatory food intake to meet energy requirements was observed when increased fill and dietary density, palatability or quality were not factors decreasing feed intake. Compensatory intake was observed in two instances even though fill was significantly increased. The adjusted average daily gain as compared to unadjusted showed the importance of an adjustment for fill when diets of varying physical nature are fed. Efficiency of gain was significantly decreased on only two of the diets containing polyethylene.

¹ Published with the approval of the Director of the Wisconsin Agricultural Experiment Station, Madison.

² Department of Meat and Animal Science (Paper No. 466), Department of Biochemistry cooperating.