据测定虹鳟对饵料中维生素B_2的需要量为3～6mg/kg,鲤为4～7mg/kg,斑点叉尾(鱼回)为9mg/kg.为测定罗非鱼饵料中维生素B_2的适宜用量,美国密西西比大学生物系的研究人员对平均体重为0.71g的奥利亚罗非鱼进行投饵试验.6种试验饵料分别含维生素B_2 0、3、6、12、24、48mg/kg,水温27℃±1℃,试验10周.发现投 It has been determined that rainbow trout has a requirement of 3 ~ 6mg / kg for vitamin B2 in feed and 4 ~ 7mg / kg for carp and 9mg / kg for catfish (fish back) .In order to determine the appropriate amount of vitamin B_2 in tilapia feed , Researchers from the Department of Biology, University of Mississippi, USA carried out the feeding experiment on the O. aurea tilapia with an average body weight of 0.71 g. The six experimental diets contained vitamin B 2 0, 3, 6, 12, 24 and 48 mg / kg, 27 ℃ ± 1 ℃, the test for 10 weeks. Found cast