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Nitrogen Digestion in Different Segments of the Equine Digestive Tract¹

University of Kentucky, Lexington

Abstract

Three ponies were used in a replicated Latin square experiment to study the digestion of protein, supplied by corn, oats and barley, anterior and posterior to permanent cecal fistulas using chromic oxide indicator procedures. Apparent protein digestion anterior and posterior to the cecal fistulas averaged 11 and 40%, respectively. Overall digestibilities of proteins from the different grains were not significantly different. It is concluded that the cecum and colon are of major importance in protein digestion in the equine.

¹ A portion of the data reported herein is taken from a dissertation presented by the senior author to the Graduate School, University of Kentucky, Lexington, in partial fulfillment of the requirements of Ph.D. degree.

² The authors are indebted to H. H. Sutton for surgical services and to E. Wachs, N. Watterson and B. Lorrison for analytical assistance.

³ The investigation reported in this paper (No. 68-5-50) is in connection with a project of the Kentucky Agricultural Experiment Station and is published with the approval of the Director.