摘要
为研究干基发酵豆粕和湿基发酵豆粕替代豆粕和鱼粉对凡纳滨对虾生长性能和酶活性的影响,试验挑选初始体质量为3.6~4.2 g的凡纳滨对虾99900尾,随机分为3组,每组6个重复,每个重复5550尾,分别饲喂添加6%去皮豆粕(DSM)、4%干发酵豆粕(DFSM)、7%湿发酵豆粕(WFSM)等氮等脂的试验饲料。在室内流水养殖系统进行为期73 d的养殖试验,然后对生长情况、存活率、转氨酶和免疫相关酶等指标进行测定。结果表明:干发酵豆粕和湿发酵豆粕两组之间终末均重无显著性差异(P> 0.05),但分别显著高于去皮豆粕组2.74、4.14 g(P <0.05);湿发酵豆粕组质量增加率和特定生长率显著高于另外两组(P <0.05),其中湿发酵豆粕组质量增加率和特定生长率显著高于去皮豆粕组96.03%、0.38%/d;干发酵豆粕和湿发酵豆粕组饲料转化率和成活率高于去皮豆粕组,但差异不显著(P> 0.05);干发酵豆粕组超氧化物歧化酶活性、总抗氧化能力及酚氧化酶活性高于去皮豆粕组,低于湿发酵豆粕组,但各试验组之间无显著性差异(P> 0.05)。综上所述,在本次试验条件下,饲料中添加发酵豆粕能改善凡纳滨对虾生长性能、饲料效率及抗氧化活性,而且湿基发酵豆粕应用效果优于干发酵豆粕。
The experiment was conducted to investgate the effects of fermented soybean meal on the growth performance, feed efficiency and enzyme activity of Litopenaeus vannamei.A tatol of 99900 Litopenaeus vannamei with the body weight of 3.6 ~ 4.2 g were selected, and they were randomly divided into 3 groups with 6 replicates and 5550 Litopenaeus vannamei in each.Three diets were formulated to contain different soybean meal(6% dehulled soybean meal,4% dry fermented soybean meal,7% wet fermented soybean meal).The experiment lasted for 73 d,then the growth performance,survival rate,aminotransferase and immune-related enzymes were measured.The results showed that compared with dehulled soybean meal group, the final weight in dry fermented soybean meal and wet fermented soybean meal groups were increased by 2.74,4.14 g(P < 0.05).The weight gain and special growth ratio(SGR) in wet fermented soybean meal group were higher than the other two groups(P < 0.05),and compared with dehulled soybean meal group were increased by96.03%, 0.38%/d. The fermented soybean meal supplementation increased the survival and feed efficiency ratio(FE),but had no significant difference(P > 0.05). Both dry fermented soybean meal and wet fermented soybean meal could increased the superoxide dismutase(SOD),phenoloxidase(PO) activity and total antioxidant status(TAS).In conclusion, fermented soybean meal could improve the growth performance and feed utilization of Litopenaeus vannamei,and the application effect of wet fermented soybean meal was better than that of dry fermented soybean meal.
引文
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