饲料中添加氯化胆碱对大口黑鲈生长、饲料利用及形体指标的影响  

Effect of dietary choline supplementation on growth performance,feed utilization,morphometric parameters of largemouth bass(Micropterus salmoides)

作　　者：周良星 钟雷 袁俊光 陈宇航 曹双俊 刘建高 江坤生 ZHOU Liangxing;ZHONG Lei;YUAN Junguang;CHEN Yuhang;CAO Shuangjun;LIU Jiangao;JIANG Kunsheng(New Hope Liuhe Co.,Ltd.,Chengdu 610063,China;Guangdong Daynew Aquatic Sci-Tech Co.,Ltd.,Foshan 528300,China;Guangdong Efficient and Healthy Aquaculture(Daynew)Engineering Research Center,Foshan 528300,China;South China Agricultural University,Guangzhou 510642,China)

机构地区：[1]新希望六和股份有限公司,四川成都610063 [2]广东德宁水产科技有限公司,广东佛山528300 [3]广东省水产高效健康养殖(德宁)工程技术研究中心,广东佛山528300 [4]华南农业大学,广东广州510642

出　　处：《水产科技情报》2023年第6期357-361,共5页Fisheries Science & Technology Information

摘　　要：为评估饲料中氯化胆碱添加量对大口黑鲈生长、饲料利用及形体指标的影响,在池塘网箱中用氯化胆碱添加量分别为0(对照组)、3000、6000 mg/kg的膨化饲料投喂初始体质量为(44.87±0.15)g的大口黑鲈,试验时长为60 d。试验结果显示,各组间大口黑鲈摄食率无显著差异(P>0.05)。随着氯化胆碱添加量的增加,大口黑鲈的增重率和特定生长率随之提高,其中6000 mg/kg添加组的增重率和特定生长率均为最高(P<0.05);而饲料系数随之有下降的趋势,但组间差异不显著(P>0.05);大口黑鲈的白肝比例亦随之有下降趋势,但差异不显著(P>0.05)。与对照组相比,2个氯化胆碱添加组的大口黑鲈脏体比和肝体比均有所下降,但无显著差异(P>0.05)。结果表明,在本试验条件下,以生长性能和肝脏健康为指标,大口黑鲈(规格为40~160 g)饲料中氯化胆碱的适宜添加量为6000 mg/kg。To study the effect of dietary choline supplementation level on growth performance,feed utilization and morphometric parameters of largemouth bass(Micropterus salmoides),a feeding experiment was conducted.Three different diets with 0,3000 and 6000 mg/kg choline chloride were formulated to feed largemouth bass with an initial average weight of(44.87±0.15)g for 60 days.The results showed no significant difference in the daily feeding rate among different groups(P>0.05).The weight gain rate(WGR)and specific growth rate(SGR)both increased with choline chloride supplementation level increasing,and the maximum levels were reached when the dietary supplementation level was 6000 mg/kg,which were significantly higher than those in control group(P<0.05).The feed conversion ratio(FCR)and white-color liver ratio both decreased with choline chloride supplementation level increasing,but no significant difference was observed between groups(P>0.05).When the dietary supplementation level was 3000 mg/kg and 6000 mg/kg,the hepatopancreas somatic index(HSI)and viscera somatic index(VSI)were lower than the control group with no significant difference(P>0.05).Based on growth performance,feed utilization,morphometric parameters and white-color liver ratio,the recommended amount of choline chloride in the practical die for largemouth bass with body weights of 40-160 g was 6000 mg/kg.

关 键 词：胆碱 大口黑鲈 生长性能 饲料利用 

分 类 号：S965.211[农业科学—水产养殖]