摘要
在实验条件下,当饲料中蛋白质含量为52.78%、脂肪含量8.78%、碳水化合物含量15.80%时,牙鲆增重率最高;在饲料中不含EPA和DHA时,牙鲆幼鱼生长缓慢,肝体指数升高,当EPA和DHA在饲料中含0.5%和1.0%时,牙鲆生长最好;EPA和DHA的比率对于鱼体生长和脂肪酸的组成影响较大,摄入EPA/DHA比率为1/2的饲料,鱼的增重率都显著高于其它各组,饲料中脂肪酸的组成对于鱼体肌肉和肝脏中极性和非极性脂肪酸组成都无显著影响,而且发现摄食不同饲料,鱼体肌肉和肝脏极性脂中EPA/DHA的比率都接近于1/2。牙鲆幼鱼饲料中,各微量元素的适宜需要量分别为:铁374mg/kg,锌119.2mg/kg,锰19.24～29.15mg/kg,铜5.62～7.24mg/kg,钴2.20mg/kg,硒1.94～2.19mg/kg。对维生素的需要量为:VA8780IU/kg,VD1880IU,VE186mg/kg,VK11.7mg/kg,VB118.2mg/kg,VB214.7mg/kg,水溶性VB360mg/kg,水不溶VB345mg/kg,VB5106mg/kg,VB625.4mg/kg,生物素1.91mg/kg,叶酸9.4mg/kg,VC(LAPP)400mg/kg,肌醇800～1200mg/kg,胆碱2000mg/kg。
In this study the results indicated that the optimum protein, lipid and carbohydrate requirements of juvenile flounder are 52.78 %,8.78% and 15.80 % respectively. Combined the growth data with the analysis of fatty acid composition of muscle and liver, it was indicated that the optimum requirement of EPA and DHA are 0.5 % and 1.0～1.5 %.The highest growth rate and lowest hepatosomatic index were obtained in fish fed a diet containing an EPA/DHA ration of 1/2.The dietary fatty acid compositon seemed have no effect on the fatty acid compositon in the polar and nonpolar lipid from muscle and liver.It is also found that the EPA/DHA ration of the polar lipid from both liver and muscle appear to stay near a level of 1/2. The optimum requirements of trace elements in the practical diet for juvenile flounder should be:iron 374 mg/kg, zine 119.2 mg/kg, maganese 19.24～29.15 mg/kg, copper 5.62～7.24 mg/kg, cobalt 2.20mg/kg and selenium 1.94～2.19 mg/kg respectively. The optimum requirements of vitamin should be: VA8780 IU/kg, VD1880 IU/kg, VE 186 mg/kg,VK11.7 mg/kg,VB118.2 mg/kg,VB214.7 mg/kg,water soluble BV360 mg/kg, water nonsoluble VB345 mg/kg, VB5106 mg/kg, VB625.4 mg/kg, biotin 1.91 mg/kg,folic acid 9.4mg/kg, VC(LAPP)400 mg/kg, inositol 800～1200 mg/kg and choline chloride 2000 mg/kg respectively.
出处
《浙江海洋学院学报（自然科学版）》
CAS
2001年第B09期6-10,共5页
Journal of Zhejiang Ocean University(Natural Science Edition)
基金
山东省科技计划项目
项目号:951627
