首页 | 本学科首页   官方微博 | 高级检索  
     


The tolerance and safety assessment of taurine as additive in a marine carnivorous fish,Scophthalmus maximus L.
Authors:Y. Liu  P. Yang  H. Hu  Y. Li  J. Dai  Y. Zhang  Q. Ai  W. Xu  W. Zhang  K. Mai
Affiliation:The Key Laboratory of Aquaculture Nutrition and Feed (Ministry of Agriculture) & The Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, Qingdao, China
Abstract:The effects of dietary taurine on growth performance, liver and intestine morphology, serum physiological and antioxidant parameters, serum thyroid hormone level, muscle taurine content and fatty acid composition of turbot were first evaluated, for the safe utilization in marine fish feed and for human food safety. Four experimental diets were formulated to contain 0, 10, 50 and 100 g/kg taurine. Each diet was randomly assigned to six replicates of 30 juvenile turbot (initial mean weight of 7.46 g). The feeding trial lasted for 10 weeks. The growth performance of fish was significantly enhanced by 10 g/kg dietary taurine. The integrity of the distal intestine was impaired and the absorptive surface was found to be significantly reduced by 100 g/kg dietary taurine. The obvious pathological changes in liver were observed in fish fed 100 g/kg taurine. Dietary taurine with 10 and 50 g/kg significantly increased the activities of serum superoxide dismutase, lysozyme and thyroid hormone. The taurine content in muscle was found to be significantly increased by dietary taurine; however, no significant differences were observed among taurine‐supplemented treatments. This study suggested that 10 g/kg taurine was safe in turbot feed, and fivefold of safety margin was obtained.
Keywords:growth  health  morphology  safety assessment  taurine  turbot
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号