No significant differences between Y SGR ( P >0 05) and activity of amlyase ( P =0 108) are found among experimental groups with different dietary protein levels.

• 结果表明 ；在本实验范围内 ；饲料中不同蛋白水平对罗氏沼虾的特殊生长率 (YSGR)影响不显著 (P >0 0 5) ；对淀粉酶的比活性也无显著影响 (P =0 10 8) ；但显著影响类胰蛋白酶 (P =0 0 17)和胃蛋白酶的比活性 (P =0 0 0 2 ) .