水生生物学报2012，Vol.36Issue(1)：49-56,8.DOI:10.3724/SP.J.1035.2012.00049
微颗粒饲料与冰冻桡足类对大黄鱼稚鱼生长、存活和体成分的影响
EVALUATION OF MICRODIETS VERSUS FROZEN COPEPODS ON GROWTH, SURVIVAL AND SELECTED CHEMICAL COMPOSITION OF LARGE YELLOW CROAKER PSEUDOSCIAENA CROCEA LARVAE
摘要
Abstract
Three newly developed microdiets (MDs:Diet 1,Diet 2 and Diet 3),one co-feeding diet (Diet 4,combined Diet 3 with frozen copepods) and frozen copepods (Diet 5) were tested for weaning large yellow croaker (Pseudosciaena crocea) larvae from 25 to 60 days after hatching (DAH).The highest final specific growth rate (SGR,7.97％/d) and survival (40.0％) were observed in fish fed Diet I,while those were the lowest in fish fed Diet 5 (4.15％/d and 20.4％,respectively).The survival of larvae fed Diet 4 showed no significant difference (P＞0.05) from that of larvae fed Diet 1.However,SGR of larvae fed Diet 4 was significantly lower (P＜0.05) than that of larvae fed Diet 1.Among the MDs,Diet I was proved to be superior to Diet 2 and Diet 3 for both SGR and survival.For all treatments,biomass in each tank was observed a similar trend as SGR.Whole-body protein was not significantly different (P＞0.05) among fish fed the MDs,which was lower than that of fish fed Diet 4,but higher than that of fish fed Diet 5.Fish fed the MDs had significantly higher (P＜0.05) lipid deposition (10.6％-13.3％) than fish fed either Diet 4 (7.6％) or Diet 5 (7.2％).Dietary C20:4n-6 (AA) level was significantly lower (P＜0.05) in Diet 5 than that in the MDs.However,the AA level was significantly higher (P＜0.05) in fish fed either Diet 4 or Diet 5 than that in fish fed the MDs.The exceeded C22:6n-3 (DHA)levels in fish compared to their corresponding diets were found in those fed either Diet 4 or Diet 5.Inversely,C20:5n-3(EPA) and DHA levels decreased in fish fed the MDs relative to their proportions in MDs.These results showed that fish fed either Diet 4 or Diet 5 had higher efficiency ofAA,DHA and EPA deposition than fish fed the MDs.This study suggested that large yellow croaker larvae could be successfully weaned by MD.Future research should be based on formula of Diet 1,since it was superior to Diet 2 and Diet 3.In addition,changes of digestive enzymes and digestive tract of large yellow croaker larvae fed different diets need to be investigated for an overall evaluation.关键词
大黄鱼/稚鱼/微颗粒饲料/生长/体成分Key words
Pseudosciaena crocea/Larva/Microdiet/Growth/Chemical composition分类
农业科技引用本文复制引用
于海瑞,麦康森,马洪明,艾庆辉,段青源,José Luis Zambonino-Infante,Chantal Louise Cahu..微颗粒饲料与冰冻桡足类对大黄鱼稚鱼生长、存活和体成分的影响[J].水生生物学报,2012,36(1):49-56,8.基金项目
The National 863 High-Tech Program (2004AA603610) （2004AA603610）
the National Natural Science Foundation of China (30400335) （30400335）
the Advanced Research Program of Sino-French Cooperation (PRA BT01-03) （PRA BT01-03）
