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Changes in Digestive Physiology of the Bovine Associated with Various Feeding Frequencies^1,2,

University of Wisconsin, Madison

Abstract

Three rumen fistulated cows were fed two, four or eight times daily in a 3 x 3 Latin-square experiment. Digestibility of dry matter, energy, and nitrogen were not significantly changed by feeding frequency. Increased feeding frequency increased significantly the nitrogen retention. Relative amounts of VFA, the ruminal pH, and the fecal Cr₂O₃ excretion pattern were not associated significantly with feeding frequency. Ruminal ammonia and VFA levels as well as pH values fluctuated significantly less when the animals were frequently fed.

¹ Published with the approval of the Director of the Wisconsin Agricultural Experiment Station.

² The authors acknowledge the assistance of M. F. Finner in designing and constructing the automatic feeders, Tadeusz Kowalczyk, for clinical help and Ralph Lance for the feeding and care of the animals.

³ This investigation was carried out while the senior author held a Wisconsin Alumni Research Foundation Fellowship.