Carcass disposal using an exchangeable storage system
Carcass disposal is an important aspect of external biosecurity. A way to achieve strong external biosecurity is by using the ‘clean-dirty area’ principle (clean area: farm buildings and zone in between; dirty area ‘outside’). Another division into zones consists of a green zone (low risk: the farm buildings), an orange zone (medium risk: the area directly around the farm buildings) and a red zone (high risk: public road, land which is not under own management).
The correct procedure for carcass disposal should avoid contaminating the clean area of farm buildings. For example, the carcass collection service must remain in the red zone and not enter the farm site. This can be achieved by placing the collection point for the carcass container next to the public road. Storing carcasses before collection at a point near the farm buildings means the red zone doesn’t have to be entered when a cadaver has to be stored. Furthermore, the collection frequency can be reduced by storing carcasses refrigerated.
By creating a double storage, the full container can be exchanged with the empty container. In this system, the storage next to the farm buildings has a cooling system; the storage next to the public roads has not. The day the carcass collection service arrives, the full (cooled) container is exchanged with the empty container next to the public road.
A strict separation between the clean and dirty road can be maintained, considerably reducing the risk pathogens being introduced. The refrigerated storage is also hygienic and the reduced odor emissions from cadavers is public-friendly.