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Liquid Diets Fed Hourly to Pigs Weaned at 19 Days of Age and Exposed to Rotavirus (Weanling Diarrhea)^1,2,

North Carolina State University^,5, Raleigh 27650

Abstract

Five diets were tested for their capacity to promote weight gains in newly-weaned, 19-d-old, rotavirus-exposed pigs. The diets were tested under conditions designed to minimize the stress of weaning. That is, rotavirus-exposed pigs were moved at weaning to an isolation unit, caged individually and fed hourly liquid diets that were high (26%) and low in protein (11%). In all experiments, pigs experienced postweaning rotavirus-associated diarrhea and depression in rate of gain. Pigs grew faster: (i) when fed diets high in protein (26% protein) vs low in protein (11% protein) and (ii) when fed diets containing cows' milk proteins vs proteins from soybean flour. A diet containing antibodies to rotavirus did not ameliorate the weanling diarrhea.

¹ Paper No. 6808 of the Journal Series of the North Carolina Agricultural Research Service, Raleigh. Use of trade names in this publication does not imply endorsement of the products mentioned.

² We gratefully acknowledge the cooperation of Mr. Stephen L. Reedy, the Swine Manager at Carroll's of Warsaw, Warsaw, NC. Supported in part by SEA grant no. 59-2371-0-071-0.

³ Director of Nutrition, Carl S. Akey, Inc., P.O. Box 128, Lewisburg, OH 45338.

⁴ Dept. of Statist.

⁵ Dept. of Anim. Sci.