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Milk Proteins for Artificially Reared Piglets I. Comparison to Egg White Protein and Effect of Added Immunoglobulins

Agricultural Experiment Station, Urbana 61801

Abstract

Egg white proved to be an unsatisfactory protein source for artificially reared piglets. Rate of gain and gain/feed were depressed, while incidence and severity of diarrhea and in some trials mortality were greater among piglets fed a diet based on egg white compared to those fed a dried skim milk diet. The same two protein sources were compared in diets of rats beyond the early suckling stage, to determine whether the effects seen in piglets are specific either for the early suckling period or for the porcine species. Rat performance did not differ between the two protein sources. It is suggested that for maximum performance piglets may require certain physiologically active components of milk not explainable in terms of classical nutrient content. Addition of immunoglobulins isolated from serum from market-weight swine was without effect for either piglets or rats.

¹ Present address: Moorman Manufacturing Company, 1000 No. 30th, Quincy, IL 62301.

² Present address: Ralston Purina, Checkerboard Square, St. Louis, MO 63188.

³ The authors acknowledge receipt of funds in support of this project from Foremost Foods, Dublin, CA.