Digestion of food by the grazing sheep. II. The production of ammonia in the rumen

Abstract

High concentrations of ammonia have been found in the rumen in grazing sheep at all seasons of the year. It has been established that the mean concentration of ammonia sustained in the rumen during a 24 hr period depends on the crude protein intake. Other factors which may affect the production of ammonia in and its removal from the rumen are also discussed.