Replacement of fish meal with peanut meal and fermented peanut meal in diets of tilapia Oreochromis niloticus×O.aureus
LI Bai-an1，LENG Xiang-jun1，2，3，4，LI Xiao-qin1，2，3，4，YAO Wen-xiang1，CAI Guo-lin5，LU Jian5
1.College of Fisheries and Life Science，Shanghai Ocean University，Shanghai 201306，China；2.Key Laboratory of Freshwater Fishery Germplasm Resources，Ministry of Agriculture，Shanghai 201306，China；3.Shanghai Engineering Research Center of Aquaculture，Shanghai 201306，China；4.Shanghai University Knowledge Service Platform，Aquatic Animal Breeding Center（ZF1206），Shanghai Ocean University，Shanghai 201306，China；5.National Engineering Laboratory for Cereal Fermentation Technology，Jiangnan University，Wuxi 214122，China
Abstract: A 8-week feeding trial was conducted to investigate the influence of replacing fish meal by peanut meal and fermented peanut meal in diets on the growth performance，muscle composition（including amino acid composition）and protease activity in tilapia Oreochromis niloticus×O.aureus.The tilapia with body weight of 68.0 g were reared in net cages（2.50 m×1.25 m×1.20 m）disposed in tanks（5.0 m×3.0 m×1.20 m）and fed seven isonitrogenous diets，one control diet containing 6%fish meal，and six fish meal substituted diets in which fish meal was substituted by peanut meal and fermented peanut meal at a rate of 1/3，2/3，and 3/3.The results showed that there were no significant differences in weight gain（WG）and feed conversion ratio（FCR）in the fish fed the diets replacement of 1/3 fish meal by peanut meal，or the replacement of 1/3 and 2/3 fish meal by fermented peanut meal（P＞0.05）.However，the tilapia fed the diets replacement of 2/3 and 3/3 fish meal by peanut meal，or the replacement of 3/3 fish meal by fermented peanut meal had significantly lower WG and higher FCR（P＜0.05）than the control fish.There were no significant differences in moisture，crude protein，crude fat，ash，essential aminoacids，non-essential amino acids in muscle，and viscerasomatic and hepatosomatic indices（P＞0.05）.There was a significantly lower gastric protease activity in the fish fed diets replacement of 2/3，3/3 fish meal by peanut meal than that in the fish fed the control diet（P＜0.05），but the replacement of fish meal by fermented peanut meal did not significantly affect the gastric protease activity（P＞0.05）.There were no significant differences in the intestinal protease activity among all groups（P＞0.05）.It is concluded that 1/3 fish meal and 2/3 fish could be replaced by peanut meal and fermented peanut meal respectively in tilapia diet containing 6%fish meal.
李百安, 冷向军, 李小勤, 姚文祥, 蔡国林, 陆健. 罗非鱼饲料中花生粕和发酵花生粕替代鱼粉的效果研究[J]. 大连海洋大学学报, 2016, 31(1): 50-57.
LI Bai-an, LENG Xiang-jun, LI Xiao-qin, YAO Wen-xiang, CAI Guo-lin, LU Jian. Replacement of fish meal with peanut meal and fermented peanut meal in diets of tilapia Oreochromis niloticus×O.aureus. Journal of Dalian Ocean University, 2016, 31(1): 50-57.
2016, Vol. 31 
