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海洋科学  2010 

肉骨粉添加微胶囊蛋氨酸替代鱼粉对凡纳滨对虾生长、饲料表观消化率及体成分的影响

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Keywords: 肉骨粉,微胶囊蛋氨酸,表观消化率,凡纳滨对虾(Litopenaeus,vannamei)

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Abstract:

选用均初始体质量为0.91g的凡纳滨对虾(Litopenaeusvannamei)540尾,随机分为6个处理组,每组设3个重复,每个重复30尾。用肉骨粉(meatandbonemeal,MBM)替代日粮中0、20%、40%、60%、80%和100%的鱼粉,分别添加不同梯度微胶囊蛋氨酸(microencapsulatedDL-methionine,MM)配制成6种等氮饲料投喂凡纳滨对虾55d。结果表明:MBM添加MM替代60%鱼粉对对虾增重率和SGR无显著影响(P>0.05),对虾对各试验饲料的饲料系数和蛋白质效率无显著影响(P>0.05),而替代80%和100%鱼粉对对虾增重率、SGR、饲料系数和蛋白质效率有显著影响(P0.05)。在MBM高水平替代鱼粉饲料中添加MM可通过平衡对虾饲料必需氨基酸,提高了对虾对饲料的表观消化率,而不影响对虾的生长和体营养成分,降低了对虾饲料的成本。

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