In the fight against airborne diseases, Hatting A/S is installing air filtration systems on their 10 facilities in Denmark. SKOV delivered the filter system, including the filters from AAF International, the world's largest manufacturer of air filtration solutions.
Hatting is Europe's largest producer of boar semen for artificial insemination. The company operates ten facilities in Denmark and has some of the world's best boars at its disposal. Hatting has over 3,000 boars and sells around 4.5 million semen doses a year.
Based on an outbreak of PRRS at its facility in Horsens in July 2019, Hatting started various risk reduction initiatives to better protect their boars against infections, especially PRRS.
One of the most significant initiatives of the facility was to install a new air filtration system to reduce the risk of airborne diseases.
The box with fan and filters placed on each air inlet.
Reducing the risk of contamination
The solution is based on positive pressure ventilation, meaning that unfiltered air is not drawn into the house when, for example, doors open.
A box with fan and filters is mounted on the outside of each air inlet in the livestock house. The fan pushes the air through two filters before it enters the house with the boars. It creates a positive pressure in the house and prevents any unfiltered air from entering the house.
The primary filter (left) and the prefilter (right) filter the air as the fan pushes the air through the filters.
Filtered air can reduce the risk of contamination by five to eight times.
Besides the air filtration system, Hatting also wants to increase the number of tests. Going forward, Hatting will test for antibodies and PCR every week compared to every fourteen days.
Additionally, their already high biosecurity standards have become even stricter, and workers must now shower whenever they enter or exit the livestock house.
The outbreak in 2019
The outbreak at Hatting Horsens' facility in July 2019 was most likely caused by airborne virus particles that entered the facility via the ventilation ducts. There are no pig farms close by, and previously the risk of infection from outside was considered very limited in theory. But unfortunately, in practice, it was not. To maximize the protection, Hatting decided to install new air filtration solutions in all its ten facilities in Denmark during 2020.