[Protein fraction changes in swine raised under different conditions]

The total protein and the protein fractions were studied in pigs raised both under industrial conditions and on the personal farms. It was found that the process of immunogenesis in pigs varied largely parallel to the various conditions of raising. The numerous immunoprophylactic treatments under industrial conditions were found to have an adverse effect on the forming of the immune response, even without apparent antigen competition. The investigations aimed at elucidating the expediency of the adopted and very often unsubstantiated, repeatedly effected treatments for the rational use of mixed vaccines.