低聚壳聚糖小肽复合制剂在美洲鳗鲡黑仔鳗养殖上的应用效果  

Application Effect of the Compound Preparation of Low-molecular Weight Chitosan Oligopeptides on the Culture of Anguilla rostrata black fry

作　　者：黄春芳 卓玉琛[1] 张电光 樊海平[1] 陈斌 林煜[1] 张晶晶 HUANG Chun-fang;ZHUO Yu-chen;ZHANG Dian-guang;FAN Hai-ping;CHEN Bin;LIN Yu;ZHANG Jing-jing(Fujian Institute of Freshwater Fisheries,Fuzhou,Fujian 350002,China;State Key Laboratory of Biological Breeding for Mariculture/Fujain Key Laboratory of Marine Biotechnology/College of Marine Sciences,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350002,China)

机构地区：[1]福建省淡水水产研究所,福建福州350002 [2]海水养殖生物育种全国重点实验室/福建省海洋生物技术重点实验室/福建农林大学海洋学院,福建福州350002

出　　处：《福建农业科技》2025年第1期17-23,共7页Fujian Agricultural Science and Technology

基　　金：福建省科技计划省属公益类项目(2022R1014005、2023R1013003)。

摘　　要：在养殖美洲鳗鲡黑仔鳗的饲料中添加低聚壳聚糖小肽复合制剂35 g·kg^(-1),以未添加为对照,在水温25~29℃条件下饲喂60 d,研究低聚壳聚糖小肽复合制剂对美洲鳗鲡黑仔鳗的生长性能、免疫能力以及肠道健康的影响。结果表明:与对照组相比,低聚壳聚糖小肽复合制剂能显著提高美洲鳗鲡黑仔鳗的平均体质量相对增长率、平均体质量特定增长率和平均饲料转化率(P<0.05),对日摄食率、平均肝体比、平均脏体比、平均肥满度影响不显著(P>0.05),对消化道α-淀粉酶和脂肪酶的酶活性影响不显著(P>0.05),对肝脏和肠道总超氧化物歧化酶、过氧化氢酶、总抗氧化能力和丙二醛等抗氧化指标影响不显著(P>0.05),对血浆中的补体C3、免疫球蛋白M、溶菌酶、酸性磷酸酶、碱性磷酸酶和总抗氧化能力指标影响不显著(P>0.05),能显著提高中肠肠绒毛高度、隐窝深度、黏膜厚度、肌层厚度(P<0.05)。低聚壳聚糖小肽复合制剂对美洲鳗鲡黑仔鳗的生长、肠道健康和营养物质消化吸收具有显著的促进作用。The experiment was conducted to study the effects of the compound preparation of low-molecular weight chitosan oligopeptides on the growth performance,immunity and intestinal health of Anguilla rostrata black fry by adding 35 g·kg^(-1) compound preparation of low-molecular weight chitosan oligopeptides to the diet of cultured Anguilla rostrata black fry,and feeding them for 60 days at the water temperature of 25-29℃,while the control group was not added.The results showed that compared with the control group,the compound preparation of low-molecular weight chitosan oligopeptides could significantly increase the relative growth rate of average body weight,specific growth rate of average body weight and average feed conversion ratio of Anguilla rostrata black fry(P<0.05),but had no significant effect on the daily feeding rate,average hepatosomatic index,average viscerosomatic index and average fatness ratio(P>0.05).Meanwhile,it had no significant effect on the enzyme activities ofα-amylase and lipase in the digestive tract(P>0.05),and had no significant effect on the antioxidant indexes such as total superoxide dismutase,catalase,total antioxidant capacity and malondialdehyde in liver and intestine(P>0.05).It had no significant effect on the indicators such as the complement C3,immunoglobulin M,lysozyme,acid phosphatase,alkaline phosphatase and total antioxidant capacity in plasma(P>0.05).However,it could significantly increase the villus height,crypt depth,mucosal thickness,muscle thickness of midgut(P<0.05).Therefore,the compound preparation of low-molecular weight chitosan oligopeptides had significant promoting effect on the growth,intestinal health,and nutrient digestion and absorption of Anguilla rostrata black fry.

关 键 词：低聚壳聚糖小肽复合制剂 美洲鳗鲡黑仔鳗 生长性能 免疫 肠道健康 

分 类 号：S965.223[农业科学—水产养殖]