Holmberg T, Hagelberg S, Lundeheim N, Thafvelin B, Hult K
Laboratory of Feed Hygiene, National Veterinary Institute, Uppsala, Sweden.
Zentralbl Veterinarmed B. 1990 Mar;37(2):97-105. doi: 10.1111/j.1439-0450.1990.tb01032.x.
In a survey during the years 1985, 1986 and 1987 the quality of Swedish feeding grain was followed by the analysis of ochratoxin A in blood collected from swine at slaughter. The swine herds sampled were selected on feed handling procedures used. From information about the feed used, risk parameters for ochratoxin A contamination were identified. The results showed annual variation in the content of ochratoxin A in the grain and that ochratoxin A increased during storage of grain, particularly in the harvest of 1985. Drying of the grain with forced ambient air was found to be inferior to the use of heated forced air. It was also noticed that more than 9% of the grain was contaminated with ochratoxin A regardless of handling. The pronounced difference between the samples studied was seen mainly as a function of geographical origin, with the island of Gotland having a much higher frequency of positive samples than the rest of Sweden. No correlation between ochratoxin A in swine feed and post mortem signs of infectious diseases in the swine herds was found.
在1985年、1986年和1987年期间开展的一项调查中，通过分析屠宰时从猪身上采集的血液中的赭曲霉毒素A，对瑞典饲料谷物的质量进行了跟踪监测。所抽样的猪群是根据所采用的饲料处理程序来挑选的。根据所使用饲料的信息，确定了赭曲霉毒素A污染的风险参数。结果表明，谷物中赭曲霉毒素A的含量存在年度变化，且在谷物储存期间赭曲霉毒素A含量会增加，尤其是在1985年收获季。发现用强制环境空气干燥谷物的效果不如使用加热的强制空气。还注意到，无论处理方式如何，超过9%的谷物被赭曲霉毒素A污染。所研究样本之间的显著差异主要表现为地理来源的函数，哥特兰岛的阳性样本频率远高于瑞典其他地区。未发现猪饲料中的赭曲霉毒素A与猪群传染病的死后体征之间存在相关性。
