The bedding was treated with 3g penac-k /m2. Within one week the stable climate improved. The ammonia concentration reduced from 11.0mg/m³ to 7.4mg/m³ (-33.3%/m³). After two weeks reduction to

3.4 mg/m3 (-69,1%)

Therefore, costs of veterinarians and electricity reduced significantly.

The State Health Department conducted ammonia measurements

according to the rules and regulations for air pollution No. 1221-1228