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《South China Fisheries Science》 2011-01
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Study on digestive enzymes activities ofTrachinotus ovatus Ⅰ.Comparison of their distribution in different digestive organs of adult and young fish

OU Youjun1,LUO Qi1,2,LI Jia′er1,Fan Chunyan1,2 (1.South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Guangzhou 510300,China;2.College of Fisheries and Life,Shanghai Ocean University,Shanghai 201306,China)  
A comparative study was conducted on the activities of digestive enzymes in different digestive organs of adult and young Trachinotus ovatus.Results show that: 1) For adults,the order of protease activity from strong to weak is: stomachforegutmidgutpyloric caecumhindgutliver;amylase activity: foreguthindgutpyloric caecummidgutliverstomach;lipase activity:foregutmidguthindgutpyloric caecumliverstomach.2) For young fish,the order of protease activity is: stomachintestinepyloric caecumliver;amylase activity:intestinepyloric caecumliverstomach;lipase activity:intestinepyloric caecumliverstomach.3)Both the protease and amylase activities in different digestive organs of adults are weaker than those in young fish,and there is significant difference in amylase activity in stomach and pyloric caecum between adult and young fish(P0.05).The lipase activity in stomach of young fish is stronger than that in adults but weaker than that in the other digestive organs of adults.The order of digestive enzyme activity in young fish is similar with adults.
【Fund】: 中央级公益性科研院所基本科研业务费专项资金(中国水产科学研究院南海水产研究所)资助项目(2008YD02)
【CateGory Index】: S917.4
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