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Ewe Milk Replacer Diets for Young Lambs. II. Some Effects of Environmental Temperature and Dietary Fat Level on Growth and Feed Utilization of Young Lambs¹

University of Minnesota, St. Paul 55101

Abstract

THIRTY-SIX lambs were removed from their dams at approximately 1 day of age to study the effect of environmental temperature and dietary fat level on growth and nutrient utilization. Milk replacer diets containing 15 or 30% fat were each fed to lambs that were individually housed in two different environments; warm (20C) and cold (7.5C).

Environmental temperature significantly affected daily gain and efficiency of utilization of protein and energy, but not feed: gain ratio. However, lambs housed in a warm environment tended to utilize feed more efficiently than those housed in cold environment. Lambs housed in a warm environment gained more weight and utilized protein and energy more efficiently than those housed in a cold environment.

¹ Paper No. 8000, Scientific Journal Series, Minnesota Agricultural Experiment Station, St. Paul. This paper is a portion of a Ph.D. dissertation submitted by the senior author to the Graduate School, University of Minnesota.

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