Abstract
Fumonisin is a recently identified mycotoxin that has been shown to be the cause of pulmonary edema disease in swine and leukoencephalomalacia in horses. Mystery Swine Disease (MSD), is an economically devastating disease complex of unknown etiology that has been reported to have occurred in several swine producing states since 1988. To determine the relationship between MSD and fumonisin, a case-control study was carried out in Illinois in mid-1990. Feed samples collected from 12 case and 9 control farms were analyzed for fumonisin. Sera from swine on all farms was screened for titers against encephalomyocarditis (EMC) virus and concentrations of alpha-1 acid glycoprotein (an acute phase reactive protein). Fumonisin concentrations ⩾20 ppm were found on 1 control farm (1/9) and 8 case farms (8/12). Titers against EMC virus (⩾ 1∶16) were found on 5 control farms (5/9) and on 6 case farms (6/12). Farms with ⩾20 ppm fumonisin in the feed were at significantly increased risk (OR= 11.2, Fisher's exact test p=0.037) for MSD. Furthermore, the π 2 test for trend was significant (p= 0.017), meaning that as the level of fumonisin in the feed increased, the risk of MSD also increased. The presence of EMC virus titers in the sow herd was not a significant risk for MSD (OR =1.25, Fisher's exact test p=0.75). Alpha-1 acid glycoprotein concentrations obtained from 2-week old nursing pigs differed significantly (p=0.0005) between MSD case and control herds.
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Bane, D.P., Neumann, E.J., Hall, W.F. et al. Relationship between fumonisin contamination of feed and mystery swine disease. Mycopathologia 117, 121–124 (1992). https://doi.org/10.1007/BF00497288
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DOI: https://doi.org/10.1007/BF00497288