Effects of Different Dietary Lipid Contents on Growth and Lipase Activity of Eriocheir sinensis Larvae  

作　　者：ZHENG Debin PAN Luqing FANG Bo 

机构地区：[1]The Key Laboratory, of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, P. R. China

出　　处：《Journal of Ocean University of China》2011年第1期55-60,共6页中国海洋大学学报（英文版）

基　　金：funded by the National Natural Science Foundation of China (No.30100140);the Higher Institutions Doctor research Foundation Projects of China (No.2000042303);the Natural Science Foundation Projects of Province Shandong (No.Y98D15063)

摘　　要：The effects of different dietary lipid content on the growth and lipase activity ofEriocheir sinensis larvae were studied in the paper. The results showed that the survival, metamorphic rate and weight gain of E. sinensis larvae at different stages of growth all varied significantly with lipid content （P〈0.05）. Further, the survival and metamorphosis rates were the highest during the larval phases Z3 to Z4, and the weight gain was the highest during the larval phases Z5 to M. During the first 20h after metamorphosis of every larval stage, the lipase activity increased over time at Z1, Z2, Z3 and M and declined at Z4 and Zs, and was influenced significantly by lipid content （P〈0.05）. In addition, lipase activity at each larval stage began to respond to dietary lipid contents 4h after the larvae were fed, and tended to be stable after 12 h. The diets with higher lipase activity and lower lipid content were selected to give the suitable recipe of lipid requirements at each larval stage. It was concluded that the suitable lipid requirements at Zb Z2, Z3, Z4, Z5 and M were 6%, 4% 6%, 8%, 8% and 10%, respectively.The effects of different dietary lipid content on the growth and lipase activity of Eriocheir sinensis larvae were studied in the paper.The results showed that the survival,metamorphic rate and weight gain of E.sinensis larvae at different stages of growth all varied significantly with lipid content (P<0.05).Further,the survival and metamorphosis rates were the highest during the larval phases Z3 to Z4,and the weight gain was the highest during the larval phases Z5 to M.During the first 20 h after metamorphosis of every larval stage,the lipase activity increased over time at Z1,Z2,Z3 and M and declined at Z4 and Z5,and was influenced significantly by lipid content (P<0.05).In addition,lipase activity at each larval stage began to respond to dietary lipid contents 4 h after the larvae were fed,and tended to be stable after 12 h.The diets with higher lipase activity and lower lipid content were selected to give the suitable recipe of lipid requirements at each larval stage.It was concluded that the suitable lipid requirements at Z1,Z2,Z3,Z4,Z5 and M were 6%,4%,6%,8%,8% and 10%,respectively.

关 键 词：lipid content Eriocheir sinensis LARVAE GROWTH LIPASE 

分 类 号：S945[农业科学—水产养殖] S565.1[农业科学—水产科学]