![]() ![]() ![]() It might be concluded that EMPS in steers consuming green pangola grass was below the minimum level for forage diets adopted in the current feeding standards. EMPS was only 72 g MCP/kg digestible organic matter. Average rumen ammonia concentration was 69 mg/L whilst rumen passage rates were 7.84 and 6.92 %/h for fluid and solids respectively. Crude protein and water soluble carbohydrates content were 6.3 and 7.4% of dry matter (DM) respectively. The EMPS was estimated using purine derivative excretion in urine. Parameters measured were EMPS, intake, fractional passage rates, and rumen ammonia concentration. Steudal) was harvested every morning and fed to the animals soon after. Four Brahman crossbred steers (457☒0.1 kg) were used in a metabolism study. Thus, quantification of the rumen MCP supply from tropical grass will improve predictive rate under tropical feeding conditions. ![]() Data from tropical pastures always below predicted results from the existing rumen models. Abstract ABSTRACT The rate of rumen microbial crude protein (MCP) supply to the intestines is a crucial element in the current rumen models to predict respond of ruminants to a certain diet.
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