Sulfur and Methionine Supplementation With Soybean Meal and Urea for Feedlot Lambs

Abstract

Some experiments have shown that the sulfur containing amino acids are the first limiting ones where urea furnishes a major part of the dietary nitrogren. Rumen microorganisms can synthesize the sulfur containing amino acids when there is an adequate level of sulfur in the diet The objectives of the experiments reported herein were to compare diets using soybean meal or urea as the supplemental protein for growing and finishing lambs and to test the value of an added methionine and various levels and sources of supplemental sulfur