A.S. Series 67-22
Proteinaceous feed and other nitrogenous materials ingested by ruminant animals undergo extensive degradation by bacteria and protozoa in the forestomach (ruminotericulum). Ammonia, the chief and end-product of the digestion of food protein in the rumen, is used by rumen microorganisms in synthesis of microbial protein.
The rate and quantity of ammonia produced in the rumen has an important influence on the efficiency of protein utilization by ruminants. Soybean meal appears to be degraded rather slowly in the rumen. On the other hand, urea is rapidly hydralyzed with a rapid release of ammonia. Such differences may have an important influence on the efficiency of utilization of nitrogen from these sources with various types of rations and at various levels of protein.
Two experiments were conducted to study the utilization of nitrogen from soybean meal and urea in rations minimal or slightly deficient in protein. The effect of nitrogen source and level in the presence or absence of ruminal protozoa was investigated.
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South Dakota State University
Copyright © 1967 South Dakota State University
Luther, R. M. and Perkins, J. L., "Nitrogen Utilization from Soybean Meal and Urea by Normal and Protozoa-free Lambs" (1967). South Dakota Sheep Field Day Research Reports, 1967. 4.