Effect of Laminarin on Growth and Immunity of Pearl Gentian Grouper  

作　　者：Lin Jianbin Liang Ping Zhu Qingguo Qiu Manli 

机构地区：[1]Fujian Provincial Institute of Freshwater Fisheries

出　　处：《Animal Husbandry and Feed Science》2017年第4期259-262,共4页动物与饲料科学（英文版）

基　　金：Supported by Special Project for Marine High-tech Industry Development in Fujian Province(2012-28,2014-22)

摘　　要：[ Objective] The paper was to study the effects of laminarin on growth performance and immunity of pearl gentian groupers. [ Method] Four separate 30 m2 concrete pools were used as a closed circulating water aquaculture system for the experiment. Simultaneously, approximately 1 800 groupers were placed in each of the two pools for treatment or control. The initial weight of the individual fish was （275.55 ＋29.79）g. They were fed with either a control diet or one con- raining 0.6% laminarin in the pools for 66 d. [ Result] At the end of the feeding trial, the weight gain of the groupers in treatment group was increased by 29.03% （ P 〈 0.05 ）, the specific growth ratio was increased by 23.88% （ P 〈 0.05 ）, and the feed conversion rate was decreased by 15.20% （ P 〈 0.05 ） compared to control group, while there was no significant difference in muscle nutritional components between treatment group and control group （ P 〉 0.05 ）. For each kilogram weight gain of an individual fish, the cost of the treatment diet was 1.96 yuan less than that of control diet, i. e. , a reduction of 12.54%. On the other hand, the activities of alkaline phosphatase （AKP）, lysozyme （LZM） and total superoxide dismutase （T-SOD） of the groupers in treatment group were significantly higher than those in control group （P 〈 0.05 ）. [ Conclusion ] Addition of 0.6% laminarin in the regular feed would improve the growth performance and immunity of pearl gentian groupers in aquaculture.[ Objective] The paper was to study the effects of laminarin on growth performance and immunity of pearl gentian groupers. [ Method] Four separate 30 m2 concrete pools were used as a closed circulating water aquaculture system for the experiment. Simultaneously, approximately 1 800 groupers were placed in each of the two pools for treatment or control. The initial weight of the individual fish was （275.55 ＋29.79）g. They were fed with either a control diet or one con- raining 0.6% laminarin in the pools for 66 d. [ Result] At the end of the feeding trial, the weight gain of the groupers in treatment group was increased by 29.03% （ P 〈 0.05 ）, the specific growth ratio was increased by 23.88% （ P 〈 0.05 ）, and the feed conversion rate was decreased by 15.20% （ P 〈 0.05 ） compared to control group, while there was no significant difference in muscle nutritional components between treatment group and control group （ P 〉 0.05 ）. For each kilogram weight gain of an individual fish, the cost of the treatment diet was 1.96 yuan less than that of control diet, i. e. , a reduction of 12.54%. On the other hand, the activities of alkaline phosphatase （AKP）, lysozyme （LZM） and total superoxide dismutase （T-SOD） of the groupers in treatment group were significantly higher than those in control group （P 〈 0.05 ）. [ Conclusion ] Addition of 0.6% laminarin in the regular feed would improve the growth performance and immunity of pearl gentian groupers in aquaculture.

关 键 词：LAMINARIN Pearl gentian grouper Growth performance IMMUNITY 

分 类 号：S965.334[农业科学—水产养殖] S828.5[农业科学—水产科学]