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对VM—Ⅰ号复合添加剂中的维生素分四组不同添加量进行了60天的网箱饲养夏花草鱼试验,结果表明,不论是鱼体相对生长率、饲料利用率或草鱼成活率,饲料组均高于对照组。1—4~#网箱组草鱼的相对生长率均值分别为109.6％,107.4％、116.8％和129.6％,与对照组(78.6％)相比提高28.8—51.0％;饲料利用率比对照组高22.4—43.0％;草鱼成活率比对照组高3.0—9.6％。对同一配方的VM—Ⅰ号复合添加剂,似以维生素添加量最高的组优于添加量低的其它组。
The results showed that no significant difference was observed in the relative growth rate of fish, feed utilization or grass carp survival rate among the four groups with four different dosages of vitamin VM-Ⅰ. All higher than the control group. The relative growth rates of grass carp in 1-4 ~ # cage group were 109.6%, 107.4%, 116.8% and 129.6%, respectively, which increased 28.8-51.0% compared with the control group (78.6%). The feed utilization rate was higher than that of the control group 22.4-43.0%; grass carp survival rate than the control group 3.0-9.6%. For the same formulation of VM-I compound additive, it appears that the group with the highest amount of vitamin supplementation is better than the other group with the low amount of addition.