饲料酵母替代部分鱼粉养殖淡水白鲳试验

用酵母替代部分鱼粉作为蛋白源，在水库网箱中养殖淡水白鲳，测定增重率及饵料系数。40d的试验结果表明，1组(鱼粉15％、酵母10％)与2组(鱼粉10％、酵母17％)间无显著差异，与3组(鱼粉5％、酵母24％)及4组(鱼粉0、酵母31％)差异显著。结合考虑长势、成本等因素，在淡水白鲳饲料中酵母用量可增加到17％，而鱼粉可减少到10％。

Freshwater orbfish farming with part of fishmeal replaced by feed yeast

With feed yeast replacing part of fishmeal as a protein source, freshwater orbfish were cultured in net cages placed in a reservoir to determine gaining ability and bait efficiency. The 40-day experiment showed that Group 1 (15% fishmeal and 10% yeast) was insignificantly different from Group 2 (10% fishmeal and 17% yeast), but significantly different from Group 3 (5% fishmeal and 24% yeast) and Group 4 (0% fishmeal and 31% yeast). With growth rate and cost taken into account, the use of yeast can be increased to 17%, and that of fishmeal reduced to 10% in feeds for freshwater orbfish.