【摘 要】
：
试验添加酵母水解物替代不同比例鱼粉,添加量分别为0(对照组)、2.5%、5.0%、7.5%、10%和12.5%,替代鱼粉的比例分别为0、8%、16%、24%、32%和40%,通过评估生长性能、消化酶和
【机 构】
：
广东海洋大学水产学院,安琪酵母股份有限公司,
论文部分内容阅读
试验添加酵母水解物替代不同比例鱼粉,添加量分别为0(对照组)、2.5%、5.0%、7.5%、10%和12.5%,替代鱼粉的比例分别为0、8%、16%、24%、32%和40%,通过评估生长性能、消化酶和免疫相关酶活性等指标评价酵母水解物替代鱼粉对凡纳滨对虾健康生长的影响。选择健康凡纳滨对虾[初重(0.63±0.01)g]随机分为6组,每组3个重复,养殖8周。结果表明,Y2.5和Y5.0处理组对虾增重率和特定生长率与Y0相比差异不显著(P>0.05),但是显著高于其余各组(P<0.05),Y2.5组饲料系数和Y0组相比差异不显著,显著低于其余各组(P<0.05);Y5.0组肝胰腺糜蛋白酶和Y0组相比差异不显著(P>0.05),显著高于其余各组(P<0.05);Y2.5和Y7.5组胰蛋白酶和Y0组相比差异不显著,但是显著高于其余各组(P<0.05);Y2.5组与Y5.0酚氧化酶活性显著高于其余各组(P<0.05),Y2.5组与Y7.5组和Y0组总一氧化氮合酶活性显著高于其余各组(P<0.05),Y5.0组和Y7.5组血清溶菌酶活性显著高于其余各组(P<0.05)。以增重率为判据,经二次曲线拟合得出,获得最大增重率时酵母水解物添加量为1.62%,替代鱼粉比例为5.19%;酵母水解物替代鱼粉比例达24%时不会对增重率产生显著影响。
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