Study on residue and disappearance of melamine in Penaeus vannamei
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摘要: 在室温(23~29℃)条件下,凡纳滨对虾用普通饲料驯化7d后再用含有不同剂量的三聚氰胺的饲料连续投喂25d,研究三聚氰胺在凡纳滨对虾血液、肌肉和肝胰腺组织中的残留消除规律。结果表明:凡纳滨对虾投喂含有三聚氰胺的饲料后,三聚氰胺在对虾血液、肌肉和肝胰腺组织中均有残留,当饲料三聚氰胺含量为800mg/kg时,对虾中三聚氰胺残留量最高部位是肝胰腺,其残留量达到6.10mg/kg;停喂含有三聚氰胺的饲料后,三聚氰胺在对虾血液、肌肉和肝胰腺组织中消除时间分别为1、4、6d;三聚氰胺在凡纳滨对虾体内可代谢为三聚氰酸,当饲料中三聚氰胺含量为200~800mg/kg时,三聚氰酸只在肝胰腺组织中检出,在血液和肌肉中均未检出,在肝胰腺组织中消除时间为3d。因此,肝胰腺可作为凡纳滨对虾体内三聚氰胺残留监控的靶器官。Abstract: The residue and disappearance law of melamine in blood, muscle and hepatopancreas organizations of Penaeus vannamei were studied at room temperature of 23 ~ 29℃ with containing different doses of melamine in feed food for 25d after domesticating 7d. The results showed that the melamine residues were existed in blood, muscle and hepatopancreas organizations, the highest residues ( 6.10mg /kg) of the melamine was in the hepatopancreas when the gavage dose of melamine was 800mg /kg. When the feed containing melamine was stopped, the melamine in blood, muscle and hepatopancreas were disappeared in 1, 4 and 6d.When the content of melamine reached 200 ~ 800mg /kg, the cyanuric acid was only detected in the hepatopancreas tissue, but not detected in the blood and muscle, the elimination time of cyanuric acid in hepatopancreas tissues was 3d. Therefore, the hepatopancreas can be used as target organ of the melamine residues in Penaeus vannamei.
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