Effects of dietary Fructus Ligustri Lucidi on growth performance,digestive enzyme activities and flesh quality in mirror carp
This trial was investigated the effects of dietary Fructus Ligustri Lucidi ( Ligustrum lucidum) on growth performance, digestive enzyme activities and flesh quality in mirror carp ( Cyprinus carpio var. Specularis). The fish with initial body weight of ( 125. 55±19. 14) g were fed five diets including the basic diet (Group A) , addition of 200 mg/kg 25% allicin ( Group B) , addition of 0. 5% ( Group C) , 1. 0% ( Group D) , and 1. 5% Group E) Fructus Ligustri Lucidi powder for 12 weeks with triplicate groups of each 10 individuals. The results showed that there were significantly lower final weight, specific growth rate and weight gain rate in the carp fed the diets containing Fructus Ligustri Lucidi powder than those in the fish of the control group (P<0. 05). The fish fed the diet containing Fructus Ligustri Lucidi powder had significantly higher amylase activity in the foregut (P<0. 05) except in Group D, and significant difference in digestive enzyme activity in midgut and hindgut were observed(P>0.05) . There was no significant differences in protease activity among the trial groups. The fish fed the diets containing Fructus Ligustri Lucidi powder had significantly lower moisture and pHl value in the muscle of Group D (P< 0.05) , and no significant difference in the nutritional composition of the flesh among groups were obtained (P> 0.05).