生物活性添加剂是从多种纯天然植物和中草药中筛选提取的 ,能提高动物的免疫功能 ,具有抗病防病及促进生长作用 ,可避免药物残留和毒副作用。在鱼虾、蟹、甲鱼饲料中添加 0 2 %活性剂 ,经过喂养试验证明 ,效果显著。使鱼类的生长速度平均提高 11 9% ,虾类提高 12 % ,河蟹提高2 0 8% ,甲鱼提高 6 2 % ;各试验组的成活率均高于对照组。 Bioactive additives are selected from a variety of pure natural plants and herbs, can improve animal immune function, disease prevention and disease prevention and promote growth, to avoid drug residues and toxic side effects. In fish, shrimp, crab, turtle feed add 0 2% active agent, after feeding test proved that the effect is remarkable. The growth rate of fish increased by 11 9% on average, shrimp increased by 12%, crab increased by 28% and turtle increased by 62%. The survival rate of each experimental group was higher than that of the control group.