维生素E对斑点叉尾生长性能和消化酶活性的影响  

Effect of vitamin E on growth and activities of digestive enzymes of channel catfish,Ictalurus punctatus Rafinesque

作　　者：何敏[1] 汪开毓[1] 张宇[1] 孙挺[1] 

机构地区：[1]四川农业大学动物医学院,四川雅安625014

出　　处：《水产学报》2009年第2期288-294,共7页Journal of Fisheries of China

基　　金：四川省科技攻关项目(JY029-040-2)

摘　　要：试验研究了饲料中不同含量维生素E对斑点叉尾生长性能和消化酶活性的影响,并对其机理进行了初步探讨。选取900尾健康的斑点叉尾,平均体重(5.00±0.50)g,随机分成4个处理组(I、Ⅱ、Ⅲ和Ⅳ处理依次分别添加维生素E 0、50、100和1 000 IU/kg饲料),每个处理3个重复,每个重复75尾。试验期105 d。试验结果显示:在一定添加水平内,维生素E能够显著提高斑点叉尾成活率、特定生长率(SGR)、蛋白质效率和摄饵量(P<0.01)。当维生素E添加量为100 IU/kg时,以上四个指标均达最高,分别为97.78%±0.96%,2.99%±0.50%,163.71%±5.62%和(7 478.00±62.01)g/尾,均极显著高于维生素E添加量为0IU/kg组(P<0.01);维生素E显著影响斑点叉尾胃肠道、肝胰脏蛋白酶和脂肪酶活性(P<0.01 orP<0.05)。100 IU/kg添加组胃蛋白酶和脂肪酶活性最高,分别达(29.33±1.66)U/(m in.mg),(196.52±17.28)U/(m in.mg),极显著高于0 IU/kg添加组(P<0.01)和显著高于1 000 IU/kg添加组(P<0.05)。结果表明,维生素E在一定添加水平内能显著提高斑点叉尾生长性能和消化酶活性,促进鱼体生长。The experiment was conducted to determine the effects of vitamin E on growth performance and activities of digestive enzymes of channel catfish, Ictalurus punctatus Rafinesque, and probe into mechanism tentatively. 900 healthy channel catfish [ （5.00 ± 0.50） g ] of average weight were randomly divided into four groups and each group included three replicates of 75 channel catfish. Group I was supplemented with 0 IU/kg vitamin E, Other three treatments were supplemented consecutively with 50 IU/kg vitamin E for group Ⅱ, 100 IU/kg vitamin E for group Ⅲ, 1 000 IU/kg vitamin E for group Ⅳ. The experiment lasted for 105 days. The result showed that Vitamin E could improve survival rate, special weight growth rate （SGR）, protein efficiency ratio and feed quantity of channel catfish notably （ P 〈 0.01 ）. When vitamin E was 100 IU/kg diet, the fish had the maximal survival rate, special weight growth rate, protein efficiency ratio and feed quantity [97.78% ±0. 96% ,2.99% ±0.50% ,163.71% ±5.62% and （7 478.00 ±62.01） g/tail） ], higher than the vitamin E adding amount for group 0 IU/kg extremely notably （P 〈0.01 ）. What＇ s more, vitamin E had significant effect on protease, lipase in the gastrointestinal tract and hepato-pancreas of channel catfish（P〈0.01 or P〈0.05 ）. When vitamin E was 100 IU/kg diet,channel catfish had the maximal the activities of protease, lipase[ （29.33% ± 1.66） U/（ min. mg）, （ 196.52 ± 17.28） 15/（ min. mg） ], higher than the vitamin E adding amount for group 0 IU/kg extremely notably （P 〈 0.01 ） and higher than group 1 000 IU/kg notably （P 〈 0.05 ）. Therefore, these results indicate that vitamin E can improve the growth, activities of digestive enzymes of channel catfish at certain level.

关 键 词：斑点叉尾 维生素E 生长性能 消化酶 

分 类 号：S963[农业科学—水产养殖]