鳗鲡肠道菌株对鱼粉体外降解作用和对鳗鲡配合饲料表观消化率的影响

Degradation of fish meal and apparent digestibility coefficient of eel formulated feed by two strains of eel intestinal bacteria

摘要: 应用从养殖鳗鲡肠道分离的细菌菌株A40209CDC4和A31009NA,对鱼粉进行体外降解,并探讨其作为饲料添加剂对鳗鲡饲料表观消化率的影响,结果表明:试验组鱼粉的各游离氨基酸含量、游离氨基酸总量、寡肽+游离氨基酸和水溶性蛋白质含量均较对照组有较大幅度的提高。A40209CDC4组干物质表观消化率和蛋白质表观消化率分别比对照组提高30.96%和10.04%;A3100gNA组干物质表观消化率和蛋白质表观消化率分别比对照组提高42.96%和13.11%。表明这2株试验菌株作为微生态饲料添加剂具有良好的开发和应用价值。

Abstract: Two strains of intestinal bacteria A40209CDC4 and A31009NA separated from cultured eel degraded fish meal and the effects of them on the apparent digestibility coefficient (DAC)of eel formulated feed were studied. The results showed that the free amino acid content, total free amino acid, oligopeptide + free amino acid content and water-soluble protein of test group by A40209CDC4 and A31009NA were significantly increased to compare to control group. The DACs of dry matter and crude protein of eel formulated feed were increased 30.96%, 10.04%, 42.96% and 13.11% by strain A40209CDC4 and A31009NA bacterium respectively. Which indicated that the exploration and application of eel intestinal bacteria A40209CDC4 and A31009NA for microflora feed additive of were promising.