中国水产科学2011，Vol.18Issue(6)：1269-1277,9.DOI:10.3724/SP.J.1l18.2011.01269
饥饿与再投喂及投喂频率对条石鲷幼鱼生长和消化酶活力的影响
Effects of starvation, refeeding, and feeding frequency on growth and digestive enzyme activity of Oplegnathusfasciatus
摘要
Abstract
The aim of this study was to investigate the effects of starvation, refeeding, and feeding frequency on the growth and digestive enzyme activity of rock bream (Oplegnathus fasciatus). In the starvation and refeeding experiment, the body weight, proteinase (pepsin and trypsin), and lipase activities decreased with increasing starvation time. There were significant differences in body weight and pepsin activity between the control group and the group starved for 6 days. After 9 days of starvation, the lipase activity was significantly lower than that of the control group. The amylase activity fluctuated throughout the experimental period. After refeeding, the fish body weights and specific growth rates (SGRs) of all groups (except S3: starvation for 3 d and refeeding for 27d) were significantly lower than those of the control group. However, there were no significant differences in body weight and SGR between the S3 group and the control. The proteinase and lipase activities increased after recovery feeding. There was no significant difference in proteinase activity between the starved groups and the control. However, the lipase activity after a relatively long period of starvation (9-12 days) did not return to the level of the control group. In the feeding frequency experiment, five experimental groups were fed 0.5, 1, 2, 3 or 4 times per day in a 30-day trial. The results showed that SGR tended to increase with increased feeding frequency. However, there were no significant increases in SGR and digestive enzyme activity at higher feeding frequencies (more than twice per day). In conclusion, the results of this study indicate that juvenile O. Fasciatus starved for 3 days had fully compensatory growth ability, and the optimum feeding frequency was twice per day for juveniles of this species.关键词
条石鲷/饥饿/再投喂/投喂频率/生长/消化酶Key words
Oplegnathus fasciatus/ starvation/ refeeding/ feeding frequency/ growth/ digestive enzyme分类
农业科技引用本文复制引用
宋国,彭士明,孙鹏,王建钢,尹飞,施兆鸿..饥饿与再投喂及投喂频率对条石鲷幼鱼生长和消化酶活力的影响[J].中国水产科学,2011,18(6):1269-1277,9.基金项目
浙江省公益技术研究农业项目(2010C32089) （2010C32089）
浙江省海洋与渔业种子种苗项目(201013425) （201013425）
浙江省重大科技专项重点项目(2006C 12005-2). （2006C 12005-2）
