Effect of soybean meal replacement by slow-release urea on ruminal parameter, blood metabolites, and microbial protein synthesis in Zel ram

Abstract

The objective of this study was to determine the effect of soybean meal replacement by slow-release urea on feed intake, ruminal parameters, blood metabolites, dry matter, nutrients digestion, and microbial protein synthesis (MPS) in ram. Rams were used for four 21-day periods. The experimental design was a 4×4 Latin square design. The experiment has consisted of the following four rations: 1) basic diet with soybean meal as a protein source, 2) basic diet with soybean meal plus 0.5 % of DM slow-release urea (SRU), 3) basic diet with soybean meal plus 1 % of DM SRU, and 4) basic diet with soybean meal plus 1.5 % of SRU, respectively. Soybean meal replacement by SRU decreased ruminal ammonia and blood urea. SRU increase in diets significantly increased acetic acid 3 hours after morning feeding, blood glucose, total purine, uric acid excretion, microbial nitrogen, and microbial protein. The results showed that soybean meal replacement by SRU sources had no negative effect on rams performance.

Effect of Using Slow-Release Urea on Food Compound Digestion Coefficient and some Rumen and Blood Fluid Traits in Awassi Lambs

“…The pH is one of the important factors that affect the growth and reproduction of microscopic rumen organisms, especially the strains of fiber-decomposing organisms, and that eating concentrated feed works to reduce (pH), while eating coarse feed leads to its rise despite the high pH value in most of the treatments before feeding high that was obtained in the experiment is considered normal and that the average pH of the rumen environment is between (5.5-7.0) for the maximum bacterial growth of fiber digestion in the rumen [17,18] which promotes digestion and increases consumption. These came in agreement with [19][20][21] pH was not affected by increased SRU. While results differed with [22] that higher rumen pH increased by increased addition of slow-degrading urea and increased intake intake in sheep diets.…”

The impact of using slow-release urea instead of fast-release urea in feed on the milk production of Awassi sheep and some blood traits

“…As for the AST enzyme, the statistical analysis results indicate that there are no significant differences in the concentration of the AST enzyme, as it ranged between (17.83-18.88 units/liter), which is an indication of the ewes' response to the addition of slow-release urea that improved the performance of blood enzymes as mentioned by some researchers in their studies [22,25]. However, it did not agree with the results of some studies [29,30], who indicated a significant decrease in the ALT enzyme while there were no significant differences for the AST enzyme.…”