黄颡鱼蛋白需求量的研究

A Study on the Protein Requirement of Young Fish of Pelteobagrus fulvidraco (Richardson)

用不同蛋白水平的配合饲料饲喂黄颡鱼40d,试验结果表明:平均日增重率随蛋白质含量升高而增大,饲料系数随蛋白质含量升高而降低。蛋白质含量为39.94%时,蛋白质效率最高为157.1%;蛋白水平在44.54%以上个体增重不再显著提高;黄颡鱼适宜的蛋白质需求量在39.49%～44.5%左右。饲养前期为保证黄颡鱼幼鱼较快的个体增重,饲料蛋白水平含量偏向44.5%为宜。要保证高蛋白质效率,黄颡鱼饲料蛋白含量以40%为适宜。

The experimental results showed as follows: After feeding with the different protein levels feeds graded form about 35.79% to 48.45% to the young fish of Pelteobagrus fulvidraco (Richardson) for 40 d,the highter the protein level, the better the feed efficiency and the growth rate with remarkable difference(p<0.05). The hightest PER was 157.1% when the content of protein was 39.94%,but when the protein level was higher than 44.54%,the difference was disremarkable(p>0.05) . The optimum protein requirement was 39.94%~44.54%,according to the three biological indexes of individual weight gain, feed efficiency and protein efficiency ratio .