Effect of exogenous enzyme on in vitro fermentation of sesame straw by rumen bacteria culture

To investigate the effect of exogenous enzymes on fermentation and in vitro rumen anaerobic bacterial growth, sesame straw (SS) was treated with 0, 1, 3 and 5 g/kg exogenous enzyme. Enzyme increased disappearance of dry matter and neutral detergent fibre of SS by bacteria in a dose dependent manner (P < 0.05). Highest level of enzyme resulted in the highest gas production, metabolisable energy, organic matter digestibility, ammonia-N and short chain fatty acid concentrations. It may be concluded that the growth and activity of rumen anaerobic bacteria on SS is favourably influenced by exogenous enzyme content.