Many boar studs and sow farms have installed filtration systems to reduce the airborne transmission of porcine reproductive and respiratory (PRRS) virus. Interest in filtering nurseries, grow-finish and wean-to-finish facilities is growing, especially in swine-dense areas. Steve Pohl, South Dakota State University, provides an overview of air filtration systems in the April 2012 issue of National Hog Farmer.
1. Each site presents a unique set of challenges to implementing an air filtration system.
Despite costs up to $250/sow, owners of sow farms are considering air filtration to counter the huge losses from a PRRS break.</p>
2. Exhaust fans with installed air chutes for minimizing backdrafting.
3. Diagram showing a cross-section of a breeding-gestation barn with filtered ceiling inlets.
4. An installed, patent-pending Z-wall fan house to minimize backdrafting.
5. Interior set of shutters for installed, patent-pending Z-wall fan house.
6. Installed endwall filter bank for cool cells.
7. Cross-Section of Extended Filter Bank for Endwall Cool Cells
8. Pressure fan taking makeup filtered air from gestation barn for load-in/out area.
9. Typically installed 6-ft. high filter bank for sidewall cool cell.
10. Cross-Section of Sidewall Filter Bank for Cool Cells into Farrowing Rooms.
11. Filter box with four filter assemblies used on a 2,700-cfm ceiling inlet.
12. The April 2012 issue of National Hog Farmer focuses on Chipping Away at PRRS.