[Multicausality in the pathology of commercial swine breeding].

Studied were more than 100,000 samples of pathologic tissue material, 1,900 whole blood and blood serum samples, 8,000 fecal samples, 2,600 washings samples, swab samples, and other sampled material via the employment of a number of bacteriologic, virologic, morphologic, hematologic, biochemical, parasitologic, and other routinely applicable laboratory methods over a period of 5 years. All materials were taken from 15 stock swine breeding complexes, 3 reproduction and 2 nucleus bases for hybrid pigs, and 3 swine breeding farms with a practice of extensive raising technology. It was demonstrated that the adaptive capacity of the animals of the Camborough hybrid sharply dropped when the pigs were kept under unconventional conditions of raising, leading to deviations in the application of industrial technology methods.

[Production of a specific gamma globulin against infectious atrophic rhinitis in swine].

A specific gamma globulin against infectious atrophic rhinitis in swine was produced following a pattern that was worked out for the hyperimmunization of serum-producing swine. Used were strains of Bordetella bronchiseptica and Mycoplasma hyorhinis isolated by the authors. The hyperimmune serum obtained was processed after Cohn's method which was improved by Ponamarova and Nechaeva.

[Methods of diagnosing infectious atrophic rhinitis].

Prevailing is the opinion that the infectious character of atrophic rhinitis is due to the causative agents isolated-- Bact . pseudomonas aeruginosa, Borditella bronchiseptica, and Mycoplasma. Using these either alone or in a mixed infection a successful reproduction of the disease was accomplished in 10-day-old pigs, which demonstrated its infectious character.

[Use of lapinized "C" vaccine as aerosol in immunoprophylaxis against swine fever].

Lapinised vaccine, strain "C", was used on 3500 fattening pigs on two farms in experiments for aerogenic immunisation. Two ordinary pigsties were modified for use as aerosol application chambers. A USSR-made disc-type aerosol generator, DAG-2, was used for vaccine dispersion.

[Production of a high-titer agglutinating Bordetella bronchiseptica serum].

For a serological identification of Bordetella Bronchiseptica, eliminated from swine ill with atrophic rhinitis, was obtained an agglutinated antiserum. For the purpose rabbits were innoculated 1. w.