动物营养学报2018，Vol.30Issue(1)：387-392,6.DOI:10.3969/j.issn.1006-267x.2018.01.046
投喂时间影响大菱鲆幼鱼的生长及类胰岛素样生长因子-Ⅰ基因的表达
Feeding Time Affects Growth and Insulin-Like Growth Factor-ⅠGene Expression of Juvenile Turbot(Scophthalmus maximus)
摘要
Abstract
This experiment was conducted to investigate the effects of feeding time on growth and insulin-like growth factor-Ⅰ(IGF-Ⅰ)expression of juvenile turbot(Scophthalmus maximus). Three different feeding time points[morning(06:00), noon(12:00)and evening(18:00)]were choose to fed juvenile turbot with the average initial body weight of(8.95±0.13)g, and the fish were divided into three groups according to the feed time. Each group had three replicates and each replicate had 25 fish. The growth trial lasted for 45 days. The results showed as following:the weight gain rate and specific growth rate of juvenile turbot in 06:00 feeding group were significantly higher than those in other two groups(P<0.05). No significant difference in the feeding rate among three feeding groups(P>0.05), but the feed efficiency in 06:00 and 12:00 feeding groups was significantly higher than that in 18:00 feeding group(P<0.05). The relative expression level of IGF-Ⅰ mRNA in liver of juvenile turbot in 06:00 feeding group was significantly higher than that in 12:00 and 18:00 feeding groups(P<0.05),while the relative expression level of IGF-ⅠmRNA in brain of juvenile turbot was not significant different among three feeding groups(P>0.05). In summary,it is suggested that the optimum feeding time for the juvenile turbot with the body weight about 8 g is 06:00.关键词
大菱鲆幼鱼/投喂时间/生长/类胰岛素样生长因子-Ⅰ基因表达Key words
juvenile turbot/feeding time/growth/IGF-Ⅰ gene expression分类
农业科技引用本文复制引用
王艺超,郑珂珂,徐后国,梁萌青..投喂时间影响大菱鲆幼鱼的生长及类胰岛素样生长因子-Ⅰ基因的表达[J].动物营养学报,2018,30(1):387-392,6.基金项目
中国水产科学研究院中央级公益性科研院所基本科研业务费专项资助(2014A08XK05) （2014A08XK05）
