实验动物饲料化学污染物含量连续监测结果

实验旨在监测实验动物饲料中化学污染物的含量。按照国标对鼠饲料、豚鼠饲料、家兔饲料和犬饲料中砷、铅、镉、汞、六六六、滴滴涕、黄曲霉毒素B1等化学污染物含量连续3年进行监测。结果表明:4种实验动物饲料一些重金属含量超国标,而六六六、滴滴涕和黄曲霉毒素B1含量均未超国标,3年中4种实验动物化学污染物超标发生率分别为14.29%、19.05%、19.05%和9.52%;4种重金属超标发生率镉=汞>砷>铅;豚鼠饲料和家兔饲料最易受重金属污染,然后依次为鼠饲料、犬饲料;不同年份,实验动物饲料化学污染物超标情况不一致。结果提示,实验动物饲料中重金属含量易超国标。

Results of content of chemical contaminants in 4 kinds of animal feed by consecutive monitoring

The experiment was to monitor the content of chemical contaminants in laboratory animal feed.Content of As,Pb,Cd,Hg,HCH,DDT and aflatoxin B1 were consecutively monitored according to national standard in feeds of rat,guinea pig,rabbit and dog.The results showed that,content of some heavy metal of 4 kinds of feed exceeded the national standard limit.HCH,DDT and aflatoxin B1 did not exceed the standard limit.The incidence rate of chemical contaminants content exceeding standard limit of 4 kinds of feed were 14.29%,19.05%,19.05% and 9.52% in 3 consecutive years,respectively;The sequence of incidence rate was Cd=Hg> As> Pb in 3 years.The sequence of degree of difficulty of feed being polluted by heavy metal was guinea pig=rabbit>rat>dog;Degree of chemical contaminants content exceeding standard limit was different in different year.These results indicated that heavy metal content of laboratory animal feed could exceed the national standard limit easily.