【摘要】 以蛋氨酸微量元素螯合物作为饲料添加剂饲喂大口黑鲈(Micropterussalmoids),对其生长、免疫力和鱼体组成进行分析。实验分为蛋氨酸微量元素螯合物添加剂组和无机微量元素添加剂组,在每千克饲料中添加Cu2+2mg、Fe2+150mg、Zn2+30mg、Mn2+12mg、Co2+2mg;每种饲料设4个重复,采用室内循环水养殖系统,在25℃下喂养,通过60d的饲养实验表明,有机微量元素使鱼对微量元素的消化率有所提高,而对鱼体的增重、免疫力没有明显的提高;蛋氨酸螯合物组鱼血液中血清碱性磷酸酶活性明显低于无机盐组,鱼体肝脏、肌肉、血液中微量元素的含量比无机盐组有所提高。更多还原

【Abstract】 The amino acid chelating polymers of Cu, Zn, Fe and Co were used as the additives added into the diets of Micropterus salmoids, respectively. The other groups of diets were added with CuSO4·7H20, ZnSO4·7H2O, MnSO4·H2O, FeSO4·7H2O and CoCl2·6H2O, respectively. Ten thousand individuals of M.salmoids were employed and the experiment period was 60 d. The added level for each treatment was Cu2+ 2 mg/kg, Fe2+ 150 mg/kg, Zn2+ 30 mg/kg, Mn2+ 12 mg/kg and Co2+ 2 mg/kg, respectively. The water temperature of the circulation system was maintained at 25 ℃. Each group had four repetitions. At the end of the rearing experiment, the growth, the immunity, and the tissues composition of the individuals were analyzed and the results showed that the elements in amino acid chelating form could increase the digestibility coefficient in M.salmoids, but could not obviously increase their weight, protein consumption rate and immunity. Furthermore, the fish in the groups of amino acid chelating polymers had high accumulating content of elements in their liver, muscle and serum compared to those in the inorganic groups, and the serum alkaline phosphatase activity tended to be lower than those in the inorganic groups. The conclusion is that there is no significant difference between the two groups of amino acid chelating microelements and inorganic elements in terms of growth, immunology and feed converse efficiency, and the fish in the former groups may accumulate elements in body tissues.更多还原