海洋科学2017，Vol.41Issue(12)：38-45,8.DOI:10.11759/hykx20170525003
脱脂南极磷虾粉对圆斑星鲽幼鱼体组成和消化性能的影响
Effects of dietary skimmed krill meal on the body composi-tion and digestive ability of juvenile spotted halibut (Verasper variegatus)
摘要
Abstract
While both fishmeal and skimmed krill meal (SKM) are considered the main source of protein, fish oil has been used as a source of lipid. This study aims to determine the optimum level of SKM (in replacement of the fishmeal) in the diet for spotted halibut (Verasper variegatus). We conducted an 8-week experiment in which the seven isocaloric and isonitrogenous diets contained 0%, 10%, 20%, 30%, 40%, 50%, and 100% SKM. We provided each diet randomly to a triplicate of 15 fish (60.13 g ± 0.20 g) per tank in the indoor culture system. The results revealed that the viscerosomatic index and hepatosomatic index of other groups were higher than those in the F100 group (P < 0.05). The condition factor of F20-F30 groups was higher than that in the F40 group (P < 0.05). In addition, the whole-body moisture and ASH of the F100 group were higher than those of other groups (P < 0.05);the whole-body crude protein of the F10 and F100 groups was higher than that in other groups (P < 0.05); and the whole-body crude fatty of the F30 and F50 groups was higher than that in other groups (P < 0.05). Furthermore, the muscle moisture of the F10, F20, and F50 groups was higher than that of the F100 group (P < 0.05); the muscle crude protein and ASH of the F10-F100 groups were similar to those of the F0 group (P > 0.05); and the muscle crude fat of the F20-F30 groups was higher than that in other groups (P < 0.05). We observed no significant dif-ference in the pepsin of juvenile spotted halibut among groups (P > 0.05). While the stomach lipase of the F0 and F20 groups were lower than that of the F30 group (P < 0.05), the stomach amylase of the F30 group was higher than that of other groups (P < 0.05). Although the intestinal amylase of the F0 group was significantly higher than that of other groups (P < 0.05), the intestinal lipase of the F30 and F100 groups was lower than that of other groups (P <0.05). Finally, the fold height of the F30 group was significantly higher than that of other groups (P < 0.05); how-ever, the mucosal thickness and villus length of juvenile spotted halibut exhibited no significant difference among groups (P > 0.05). This study suggests that 10%-50% of SKM levels exert similar effects on the body composition and digestive ability of juvenile spotted halibut.关键词
圆斑星鲽(Veraspervariegatus)/脱脂磷虾粉/体组成/消化酶Key words
spotted flounder/skimmed krill meal/body composition/digestive enzyme分类
农业科技引用本文复制引用
郑建明,严俊丽,陈四清,常青,王贞杰,赵捷杰,刘长琳,胡建成..脱脂南极磷虾粉对圆斑星鲽幼鱼体组成和消化性能的影响[J].海洋科学,2017,41(12):38-45,8.基金项目
中国水产科学研究院黄海水产研究所基本科研业务(20603022016005) （20603022016005）
天津市农业科技成果转化与推广项目(201604100)Yellow Sea Fisheries Research Institute of Chinese Academy of Fishery Sciences,No.20603022016005 （201604100）
Tianjin Agricultural Science and Technology Achievement Transformation and Extension Project,No.201604100 （）
