Ruminal Flora Studies in the Sheep III. The Influence of Different Sources of Nitrogen Upon Nitrogen Retention and Upon the Total Number of Free Microorganisms in the Rumen

Abstract

The data are presented from a replicated feeding trial designed to determine the influence of different sources of nitrogen, fed at a constant level, upon the nitrogen balances and numbers and types of ruminal microorganisms in growing Iambs. Six Merino Iambs were fed a basal ration of oaten chaff and wheaten grain supplemented with six sources of nitrogen: linseed meal, subterranean clover seed, whole powdered egg, casein, urea, and urea plus methionine.