Effects of allicin on growth performance,immune index,antioxidant index and body composition of grass carp
This experiment was conducted to study the effects of allicin on growth performance,immune index,antioxidant index and body composition of grass carp. Select 600 healthy grass carp with similar initial weights and randomly divide them into 4 groups,with 3 replicates in each group and 50 carp per replicate. The control group of grass carp was fed with basic feed,while the other three groups of grass carp were fed with basic feed+250 mg/kg(experimental group Ⅰ),500 mg/kg(experimental group Ⅱ),and 750mg/kg(experimental group Ⅲ)of allicin experimental feed,respectively. Pre trial period of 7 days,trial period of 60 days. The results showed that:(1)Compared with the control group,the final weight of experimental group Ⅱ significantly increased by 8.59％(P<0.05),the weight gain rate significantly increased by 12.37％(P<0.05),the feed coefficient significantly decreased by 10.87％(P<0.05),and the fatness significantly increased by 7.69％(P<0.05). Compared with the control group,the weight gain rate of experimental group Ⅲ significantly increased by 7.65％(P<0.05),and the feed coefficient significantly decreased by 7.07％(P<0.05).(2)Compared with the control group,the alkaline phosphatase activity in experimental group Ⅱ was significantly reduced(P<0.05),while the lysozyme activity,total antioxidant capacity,and catalase activity were significantly increased(P<0.05). Compared with the control group,the alkaline phosphatase activity and malondialdehyde content in experimental group Ⅲ were significantly reduced(P<0.05),while lysozyme activity,total antioxidant capacity,and catalase activity were significantly increased(P<0.05).(3)Compared with the control group,the crude protein content in the muscles of experimental groups Ⅰ,Ⅱ,and Ⅲ was significantly increased(P<0.05). To sum up,the appropriate level of allicin added to the feed can improve the growth performance,immunity,antioxidant capacity and crude protein content in the muscle of grass carp. Under the conditions of this experiment,the recommended amount of allicin added to grass carp feed is 500 mg/kg.
万方数据
维普
