壳聚糖对异育银鲫生长及抗菌能力的影响  

Effect of chitosan on growth and resistance to infection of Aeromonas hydrophila of allogynogenetic silver crucian carp

作　　者：陈云波[1] 华雪铭[1] 周洪琪[1] 沈士林 徐忠 张旭日 陆汉斌 

机构地区：[1]上海水产大学生命科学与技术学院 [2]上海崇明县水产良种场,上海202151 [3]上海崇明县农委,上海202150

出　　处：《上海水产大学学报》2006年第2期243-246,共4页Journal of Shanghai Fisheries University

基　　金：上海市科委重点攻关项目(013212101)

摘　　要：在基础饲料中分别添加0.0%(对照组)、0.3%、0.5%、1.0%、2.0%壳聚糖,饲喂异育银鲫(体重46.20±3.56 g)二个月,测定鱼的生长与成活,进行嗜水气单胞菌的感染试验,并计算半致死量LD50。结果表明,不同浓度的壳聚糖均能极显著地提高鱼的增重,其中0.5%壳聚糖组增重率比对照组提高33.90%(P<0.01)。壳聚糖对鱼的成活率无显著影响。0.5%、1%壳聚糖组的异育银鲫对嗜水气单胞菌的抵抗能力显著高于对照组(P<0.05)。壳聚糖在异育银鲫饲料的适宜添加量为0.5%。Allogynogenetic silver crucian carp （body weight 46.20 ± 3.56 g） were fed on the basal diets supplemented with 0.0% （control）, 0.3 %, 0.5 %, 1%, 2% chitosan respectively. After two months of feeding, the growth and survival of tested fish were measured. The experiment of infection of Aeromonas hydrophila was carried out to determine LD50. Supplement of different levels of chitosan could significantly promote fish body weight gain （P 〈 0.01 ）. Body weight gain of 0.5% chitosan group was improved about 33.90% higher than that of control. The survival rate was not affected by the supplement of chitosan. The resistance to infection of Aeromonas hydrophila of 0.5 % and 1% chitosan groups was increased （ P 〈 0.05）. The supplement of 0.5 % chitosan was optimum for the feed of Allogynogenetic silver crucian carp.

关 键 词：壳聚糖 异育银鲫 生长 抗病菌感染能力 

分 类 号：S963[农业科学—水产养殖]