Abstract
This study was conducted to compared the use of multi enzyme commercial preparation (Avizyme) and β-glucanase for improving the nutritional value of
common carp Cyprinus carpio L. diets, which contained 30-60% barley and improved sunflower meal 5-20% as main ingredients. Feeding trail was conducted with 144 fish at initial weight 17 ± 2 g. using closed system for 8 weeks. Statistical analysis for criteria being : relative growth rate , specific growth rate, food conversion ratio and protein efficiency ratio showed that the best efficiency for criteria above by using multi enzyme (β-glucanase, xylase, protease) to improve the nutritional value of diet contained 60% barley with 20% improved sunflower meal. Body Chemical body composition of fish (Crude protein, ether extract as well as ash) was studied.
