摘要
为研究卵形鲳鲹(Trachinotus ovatus)幼鱼对饲料中维生素B_2的最适需要量,配制维生素B_2水平为10 mg·kg^(-1)、4.4 mg·kg^(-1)、6.2 mg·kg^(-1)、8.0 mg·kg^(-1)、11.3 mg·kg^(-1)、15.5 mg·kg^(-1)的6种实验饲料,每种饲料设3个平行,每个平行放25尾初始均质量为(11.63±0.17) g的卵形鲳鲹幼鱼,每日2次饱食,投喂8周。结果显示,4.4 mg·kg^(-1)组幼鱼的增重率、特定生长率均显著高于0 mg·kg^(-1)组(P<0.05),血清中谷草转氨酶、谷丙转氨酶活性显著低于0 mg·kg^(-1)组(P<0.05),但饲料中维生素B_2水平对饲料系数、成活率、肝脏维生素B_2含量、血清免疫指标、全鱼粗脂肪和粗蛋白、肌肉水分、粗脂肪和灰分均无显著影响(P>0.05);6.2 mg·kg^(-1)组肝脏D-氨基酸氧化酶(D-AAO)活性显著高于0 mg·kg^(-1)组(P<0.05)。折线模型分析显示,卵形鲳鲹获得最佳生长和肝脏D-AAO活力达到最大时对饲料中维生素B_2的需要量分别为4.23 mg·kg^(-1)和6.24 mg·kg^(-1)。
To determine the optimal dietary vitamin B 2 requirement of juvenile golden pompano ( Trachinotus ovatus ), six experimental diets were formulated which contained 0 mg·kg^-1 , 4.4 mg·kg^-1 , 6.2 mg·kg^-1 , 8.0 mg·kg^-1 , 11.3 mg·kg^-1 and 15.5 mg·kg^-1 of vitamin B 2. Each diet was assigned to three parallels of 25 fish [initial mass of (11.63±0.17) g] which were fed twice daily for eight weeks. The results show that the weight gain rate and specific growth rate of the fish fed with diet of 4.4 mg·kg^-1 vitamin B 2 were significantly higher than those of 0 mg·kg^-1 group ( P <0.05), and the activities of aspartate aminotransferase and alanine aminotrans-ferase in the serum were significantly lower than those in 0 mg·kg^-1 group ( P <0.05). No significant effect was found on the fish coefficient , survival rate, liver vitamin B 2 content, serum immune parameters, crude protein and crude fat content in whole body, moisture , crude fat and crude ash in muscle ( P >0.05);the liver D-AAO activity in 6.2 mg·kg^-1 group was significantly higher in 0 mg·kg^-1 group ( P <0.05). Broken-line model analysis estimates that the dietary vitamin B 2 requirement of juvenile golden pompano is 4.23 mg·kg^-1 for optimal growth, and 6.24 mg·kg^-1 for maximum liver D-AAO activity.
作者
黄倩倩
林黑着
周传朋
黄忠
杨育凯
虞为
黄小林
何嘉奇
HUANG Qianqian;LIN Heizhao;ZHOU Chuanpeng;HUANG Zhong;YANG Yukai;YU Wei;HUANG Xiaolin;HE Jiaqi(South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China;College ofFisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China;Shenzhen Base of South China SeaFisheries Research Institute, Chinese Academy of Fishery Sciences, Shenzhen 518121, China;School of Life Science,Guangzhou University, Guangzhou 510006, China)
出处
《南方水产科学》
CAS
CSCD
北大核心
2019年第1期69-76,共8页
South China Fisheries Science
基金
中国水产科学研究院南海水产研究所中央级公益性科研院所基本科研业务费专项资金资助(2017ZD01)
国家自然科学基金项目(31602175)
深圳市战略性新兴产业发展专项资金(SWCYL20150330010013)
广州市科技计划项目(201707010445)
