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Diets for Rearing Colostrum-Free Piglets with an Automatic Feeding Device^{1, 2,}

North Carolina State University, Raleigh 27607

Abstract

Dietary needs from birth to 2 weeks of age were determined for colostrum-free neonatal pigs reared with an automatic feeding device. To this end, protein and energy needs were examined: first, by holding the amount of carbohydrate (lactose) calories constant and varying the protein (casein) to fat (corn and peanut oil) calories; second, by holding the amount of fat calories constant and varying the protein to carbohydrate calories. Criteria of dietary success were: growth rates equal to or in excess of naturally suckled pigs; and mortality (<4%) lower than the naturally suckled (approximately 20%).

Initially, it was not possible to satisfy our criteria of success when the dietary protein came exclusively from isolated calcium caseinate. Rate of gain equal to our controls (or naturally suckled pigs) was obtained when 50% of the calcium caseinate was replaced by the protein in non-fat milk solids. Thus, 90 g/1 non-fat milk solids became a part of the base diet.

¹ Paper No. 4712 of the Journal Series of the North Carolina Agricultural Experiment Station, Raleigh.

² Autosow.

³ Research supported in part by Special Grant Project No. 916-15-32 from the Cooperative State Research Service, U.S.D.A. Thanks are due to Mr. Edward Dorsey for the devotion to the details necessary to insure the success of experiments involving animals and machines. Thanks also are due Dr. Eugene Eisen for statistical advice.

⁴ Present address: Central Soya, Decatur, Indiana.