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Effects of Cecal Fistulation upon Nutrient Digestion and Indicator Retention in Horses^{1, 2, 3,}

University of Kentucky, Lexington 40506

Abstract

Three mature Thoroughbred geldings were used in duplicated trials conducted before and after cecal fistulation to determine the effects of the fistulation on nutrient digestion and indicator (Cr₂O₃ and polyethylene) retention time. There were significant increases (P<.01) in crude fiber and ether extract digestion following fistulation, while dry matter, gross energy, and crude protein digestibilities were not changed significantly. Retention times of Cr₂O₃ and polyethylene were increased significantly (P<-01 and P<.05, respectively) following fistulation. There were no significant differences among the three methods of determining digestibility.

¹ Data reported here were taken from a thesis submitted by the senior author in partial fulfillment of the requirements for the Masters degree, University of Kentucky.

² Paper No. 72-5-155, published with the approval of the Director, Kentucky Agricultural Experiment Station.

³ The ingredients and services donated by the Falstaff Feed Company, Chicago, Illinois, for use in this study are gratefully acknowledged.

⁴ Present address: Department of Animal Science. Texas A&M University, College Station.

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