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The project demonstrated the euthanasia of mature sows and feeder pigs using carbon monoxide (CO) produced by a 1970 gas grain truck. The gas engine system, with no modifications, had been previously used to euthanize weaned pigs. This project further improved the method by cooling and filtering particulates out of the exhaust gas prior to contact with the pigs.
The objective of this project was to establish an effective and safe method to facilitate both the depopulation of sow units and the disposal of carcasses in the face of a foreign animal disease outbreak.
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