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当前位置: 首页 > 文章 > 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 动物营养学报 2018 (1) 387-392
Position: Home > Articles > Feeding Time Affects Growth and Insulin-Like Growth Factor-ⅠGene Expression of Juvenile Turbot( Scophthalmus maximus) Chinese Journal of Animal Nutrition 2018 (1) 387-392

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

作  者：
王艺超;郑珂珂;徐后国;梁萌青
单  位：
中国水产科学研究院黄海水产研究所
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
摘  要：
本试验旨在研究投喂时间对大菱鲆幼鱼生长和类胰岛素样生长因子-Ⅰ(IGF-Ⅰ)基因表达的影响。试验设3个组,分别于早上(06:00)、中午(12:00)、傍晚(18:00)3个不同的时间点投喂大菱鲆幼鱼[初始平均体重为(8.95±0.13)g],每个组3个重复,每个重复25尾。养殖试验周期为45 d。结果表明:06:00投喂组大菱鲆幼鱼的增重率和特定生长率显著高于其他2组(P<0.05),3个投喂组间大菱鲆幼鱼的摄食率无显著差异(P>0.05),但06:00投喂组与12:00投喂组的饲料效率显著高于18:00投喂组(P<0.05);06:00投喂组大菱鲆幼鱼肝脏中IG F-ⅠmRNA相对表达量显著高于12:00和18:00投喂组(P<0.05),而投喂时间对大菱鲆幼鱼脑中IGF-ⅠmRNA相对表达量无显著影响(P>0.05)。综上,建议体重8 g左右的大菱鲆幼鱼的投喂时间为06:00。
译  名：
Feeding Time Affects Growth and Insulin-Like Growth Factor-ⅠGene Expression of Juvenile Turbot( Scophthalmus maximus)
作  者：
WANG Yichao;ZHENG Keke;XU Houguo;LIANG Mengqing;Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences;
关键词：
juvenile turbot;;feeding time;;growth;;IGF-Ⅰ gene expression
摘  要：
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-Ⅰ mRNA 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.

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