水生生物学报2016，Vol.40Issue(4)：647-654,8.DOI:10.7541/2016.87
螺旋藻粉替代饲料中鱼粉对异育银鲫幼鱼生长、饲料利用和蛋白沉积的影响
EFFECTS OF DIETARY FISHMEAL REPLACEMENT WITH SPIRULINA PLATENSIS POWDER ON THE GROWTH PERFORMANCE, FEED UTILIZATION AND PROTEIN DEPOSITION IN JUVENILE GIBEL CARP (CARASSIS AURATUS GIBELIO VAR. CAS)
摘要
Abstract
To investigate effects of dietary replacement fishmeal protein with Spirulina platensis powder protein on feed intake, growth performance, feed utilization and protein deposition in juvenile gibel carp (Carassis auratus gi-belio var. CASⅢ), six isonitrogenous, isolipidic and isoenergitic diets were formulated to contain graded levels of fish-meal protein replacement by Spirulina platensis. (0, 20%, 40%, 60%, 80%and 100%respectively) for a 60-day trial. Triplicates of 20 fish [initial body weight of (3.2±0.5) g] were fed to apparent satiation with six experiment diets. The water temperature was (28±3)℃during the experiment. With the increased proportion of Spirulina platensis in diets, feeding rate (FR) was significantly elevated while feed efficiency (FE) was significantly decreased. There was no signi-ficant difference in specific growth rate (SGR) between fishmeal group (FM) and 20%of Spirulina platensis replace-ment (SP20) (P>0.05), of which was significantly higher in fishmeal group than other groups (P<0.05). Meanwhile, no significant differences were found in protein retention efficiency (PRE) between FM, SP20, SP60 (P>0.05), while other groups were significantly lower than that of the FM group (P<0.05). The condition factor (CF) of FM group was significantly higher than other groups (P<0.05). The carcass protein of SP100 group was significantly lower than other group (P<0.05). A trend was observed in carcass fat, which the content of fat decreased from FM to SP40 group then increased from SP40 to SP100. The carcass ash of fish was significantly higher in SP20, SP40, SP60 than FM group (P<0.05). There was no significant difference among all treatments in intestinal digestive enzyme (trypsin, lipase,α-amylase) (P>0.05). Apparent digestibility coefficients of dry matter significantly increased, while apparent digestibility coefficients of crude protein significantly decreased with the increased content of Spirulina platensis (P<0.05). The lowest apparent digestibility coefficient of total phosphorus was at SP20, and the highest one was at SP100. According to the variation of SGR and PER among all treatments, the optimum proportion of Spirulina platensis replacement die-tary fishmeal protein was 20%while fishmeal as the sole protein source in the diet (the content of fishmeal in diet was about 50%).关键词
异育银鲫/螺旋藻/鱼粉/蛋白替代/水产饲料Key words
Gibel carp/Spirulina platensis/Fishmeal/Protein replacement/Aquatic feed分类
农业科技引用本文复制引用
曹申平,韩冬,解绶启,金俊琰,刘昊昆,杨云霞,朱晓鸣..螺旋藻粉替代饲料中鱼粉对异育银鲫幼鱼生长、饲料利用和蛋白沉积的影响[J].水生生物学报,2016,40(4):647-654,8.基金项目
公益性行业(农业)科研专项(201303053、201203015、201203083) （农业）
现代农业产业技术体系建设专项资金(CARS-46-19)资助[Supported by the Special Fund for Agro-scientific Research in the Public Interest (201303053,201203015,201203083) （CARS-46-19）
the Earmarked Fund for China Agriculture Research System (CARS-46-19)] （CARS-46-19）
