Effect of Exogenous Enzymes on Ruminal degradation of Feed and Animal Performance: A review

摘要: Review was made on the effect of exogenous enzymes ruminal degradation feed and animal performance. A wide variety carbohydrase, protease, phytase lipase have been used in feeds. Although supplementation to ruminants has shown increase digestibility poorly digested feeds improves performance terms weight gain milk yield, is not consistent different researches. The inconsistent results from studies can be contributed a number factors, including diet composition, type enzyme preparation, complement activities, amount provided, stability, method application. Among methods application, pre-ingestion treatment better intake, Similarly total mixed ration brings enhanced animals. Even while appropriate level types specified, several that applications high levels forages or diets produce less desirable responses than low levels. understanding production techniques, activity, mode action application techniques commercial non starch polysaccharidase help scientific community for competent utilization these biotechnological products efficient available resources. Key words ; enzymes, , Animal