[E. coli enterotoxicosis in unweaned piglets. III. Preparation and use of vaccines in enterotoxaemia due to E. coli in newborn piglets in the Netherlands].

The preparation of a number of E. coli vaccines designed to prevent enterotoxicosis due to E. coli in young piglets is discussed. The results of laboratory experiments concerned with the production of haemagglutinating antibodies in pigs following inoculation of this vaccine are reported. This oil-adjuvant vaccine (OAV) was used in the field in thirty-one herds in which enterotoxicosis due to E. coli was a recurrent problem. It is concluded from serological and clinical observations that the use of this vaccine is advisable on farms on which enterotoxicosis due to E. coli occurs in young piglets.