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Effect of Fat Source on Pancreatic Lipase Activity and Specificity and Performance of Baby Pigs

U.S. Department of Agriculture, Beltsville, Maryland 20705 and Iowa State University,^,4 Ames 50010

Abstract

Two experiments involving 100 pigs were conducted to study the activity and specificity of pancreatic lipase and to determine the baby pig's ability to utilize tributyrin or lard. In vitro hydrolysis of tributyrin was significantly greater than that observed for butter, coconut oil or lard. Age had little effect on lipase activity. Addition of tributyrin to the diet resulted in a significant reduction in pig gains, significant improvement in fat digestibility and had little effect on feed/gain or serum lipase activity. Apparent digestibility of fat increased significantly with increasing levels of fat in 1 the diet and with increasing age. Serum lipase activity increased significantly only with increasing added fat levels. Plasma fatty acid patterns were not appreciably affected by source or level of fat or by age.

¹ Animal Science Research Division, A.R.S.

² Present address: Department of Animal Sciences, University of Kentucky, Lexington 40506.

³ Department of Animal Science.

⁴ Journal Paper No. J-6808 of the Iowa Agriculture and Home Economics Experiment Station, Ames. Project No. 1512.