[Prophylactic disinfection of the housing for suckling sows under commercial swine-raising conditions].

Cleansing and prophylactic disinfection were carried out on a premise for nursing sows with 31 raised boxes over a flooring area of 250 m2. The effect of these treatments was ascertained through bacteriologic investigations of impression preparations and washings taken by means of cotton swab. It was found that cleaning and washing with a water jet at 40 atm. pressure led to 96.58 per cent drop of the total microbial count of the air, while disinfection with 3 per cent water solution of sodium hydroxide resulted in 98.73 per cent drop. Surface coli bacteria dropped by 66.70 per cent, and staphylococci--by 78.50 per cent, however, both species of organisms were totally destroyed with disinfection.