内陆配合饲料培育点带石斑鱼幼鱼试验

Compound feedingstuff and feeding strategies of young Epinephelus malabaricus

采用人工配制海水(盐度为10)、自配粉状饲料(蛋白含量45%),在水温24～29℃的范围内,对2 200尾体重3～4 g的点带石斑鱼幼鱼进行培育试验。经过67 d培育,鱼体体重达到32.7～35.0 g,约增加9倍,日均增重量达0.44～0.46 g,特定生长率为3.24～3.57%.d-1;平行养殖试验结果显示成活率分别为70%和80%,饲料系数分别为0.93和0.86;养殖过程完全实现不换水、不用药的节水型和健康型模式。

2 200 young Epinephelus malabaricus were fed with purely artificial feedingstuff in artificial sea wa- ter. The salinity was 10, the water temperature was controlled between 24 ~ 29C. After 67 days of growth, the weight of the young Epinephelus malabar＆us increased by nine times and its daily weight increase rate reached 0. 44 -0. 46 g, SGR reached 3.24 ~ 3.57% ~ d-~ The results of the same two experiments showed that survival rates were 70% and 80%, the feedingstuff coefficients were 0. 93 and 0. 86. We have achieved a water saving and healthful ecological feeding model with no water change and no medicine use in the whole process of feeding.