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Effect of Dietary Fat Level on Apparent Nutrient Digestibility by Growing Swine¹

Cornell University,^,4 Ithaca, New York

Abstract

A growth-digestion trial and a digestion trial were conducted with growing swine to study the effects of adding fat to practical-type swine rations on the performance and digestibility of ration nutrients. The addition of 10% stabilized beef tallow resulted in non-significantly increased weight gains on high protein levels (19%) and non-significantly decreased gains on low protein levels (13%). Using data obtained with conventional total fecal collections and the dry-ash, chromium oxide indicator method, the apparent protein digestibility of practical-type rations for growing swine was not influenced by the addition of fat.

¹ Acknowledgement is made to R. F. Elliott, American Cyanamid Co., Princeton, New Jersey, for supplying the vitamin and antibiotic supplements and to Miss S. Spitz for performing the proximate analyses.

² Present address: AEC-UT, Agricultural Research Lab., Oak Ridge, Tennessee.

³ Present address: The Rockefeller Foundation, Apartado Aereo 58-13, Bogota, Colombia.

⁴ Department of Animal Husbandry.