抽样调查北京地区猪场饲料及饲料原料玉米赤霉烯酮污染状况

本研究采用免疫亲和柱高效液相色谱法测定了北京地区猪场饲料原料及全价饲料中玉米赤霉烯酮（ＺＥＮ）的含量，以了解北京地区饲料中 ＺＥＮ的污染情况。试验抽样采集北京市昌平区、大兴区、延庆区、平谷区、顺义区 ５个区县 １５个猪场 １３１份饲料样［５５份玉米、豆粕、麸皮、干酒糟及其可溶物（ＤＤＧＳ）原料，７６份猪全价饲料］进行 ＺＥＮ含量的测定。结果表明：玉米、豆粕、麸皮、ＤＤＧＳ和全价饲料中 ＺＥＮ的检出率分别为 １００．００％、５４．４５％、１００．００％、１００．００％和 ５８．８８％，超标率分别为 ０．００％、０．００％、０．００％、４１．１８％和 ０．００％，平均含量分别为 １０９．０８、９．１９、１４．９２、８８２．６８和 ５８．８８μｇ／ｋｇ。结果提示，不同饲料原料中 ＺＥＮ含量存在差异，ＤＤＧＳ中 ＺＥＮ平均含量超标，猪全价饲料及玉米、豆粕等饲料原料中 ＺＥＮ平均含量均未超标。

Sampling and Investigating Zearalenone Contamination of Feeds and Feedstuffs of Pig Farms in Beijing Area

The zearalenone contents in feeds and feedstuffs were determined using immunoaffinity-HPLC method in this study for knowing the zearalenone contamination situation in feeds and complete feeds of pig farms in Beijing area.Fifty-five feedstuffs which were corn,soybean meal,bran and distillers dried grains with solubles(DDGS) and seventy-six complete pig feeds were collected from 15 pig farms located in Changping district,Daxing district,Yanqing district,Pinggu district and Shunyi district in Beijing area,and the zearalenone contents were determined.The results showed that the detection rates of zearalenone in corn,soybean meal,bran,DDGS and complete feeds were 100.00%,54.45%,100.00%,100.00% and 58.88%,the over standard rates were 0.00%,0.00%,0.00%,41.18% and 0.00%,and the average contents were 109.08,9.19,14.92,882.68 and 58.88 μg/kg,respectively.The results indicate that there are differences in zearalenone contents among different kinds of feeds and feedstuffs.The average content of zearalenone in DDGS is exceeded,but average contents in complete pig feeds and other feedstuffs such as corn,soybean meal and so on are not exceeded.