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PubMed1976

Erysipelas arthritis in swine: concentrations of complement and third component of complement in synovia.

Concentrations of hemolytic complement and of 3rd component of complement were determined in serums and in synovia of normal and arthritic joints in swine affected with arthritis experimentally produced by the inoculation of Erysipelothrix rhusiopathiae. Mean concentrations of complement in arthritic joints were increased from 24.7 to 37.5 50% hemolytic units of complement per milliliter. Third component of complement, expressed as a percentage of the serum concentration, was increased from a mean of 16.9 (normal joint synovia) to a mean of 27.1 (arthritic joint synovia). Also, fast-migrating conversion products of 3rd component of complement were not detected in synovia from arthritic joints. These results are interpreted as indicating a relatively less important role for immune complexes in the pathogenesis of erysipelothrix arthritis than is described for rheumatoid arthritis in persons.

Animals↗
PubMed1976

The effect of grassmeal and alfalfa meal on daily gain, thickness of backfat and on the esophagogastric region in bacon pigs.

In pigs dietary factors often are involved as causes of lesions in pars esophagea of the stomach. In experiments the primary purpose of which was to clarify the effect of grassmeal or alfalfa meal on growth, feed efficiency and carcass quality in bacon pigs, an influence of these feedstuffs on the growth rate and degree of esophagogastric lesions was detected. Pigs with these lesions had as an average a lower daily gain and less backfat than pigs without lesions.

Animal Feed↗
PubMed1992

[Vaccination of sheep against Aujeszky's disease with a gI-deleted mutant].

The use of gl deleted live vaccines against Aujeszky's disease (AD) facilitates to differentiate vaccinated from field-virus infected animals. In this study different modes of vaccination were tried to find out how sheep can be protected from a lethal infection with ADV. It could clearly be demonstrated that Aujeszky disease virus (ADV) is spread by horizontal transmission from infected pigs to sheep. The nasal discharges of infected pigs contained a maximum of 10(8.75)TCID50/g mucus at days 3 and 4 p.i. and those of the contact-pigs 10(8.5)TCID50/g mucus at days 6 and 7 after contact. Non-vaccinated contact sheep were infected horizontally by the pigs. The highest titres ranged from 10(6.25) to 10(7.5)TCID50/g mucus. These animals were sacrificed at day 5 p.i. exhibiting acute symptoms of AD. The nasal discharge of vaccinated sheep contained much lower amounts of ADV (maximum: 10(4.25)TCID50/g mucus). All surviving animals had developed antibodies. Following challenge with the ADV-strain NIA3, no febrile response or virus-shedding was observed in sheep vaccinated 2x s.c. or 2x i.m. with a gl deleted live vaccine, whereas sheep, vaccinated only 1x i.m. (4 out of 4 animals) or 1x i.m. (3 out of 4 animals) or 1x i.n. and 1x i.m. (1 out of 4 animals) had to be sacrificed after showing acute symptoms of AD. In conclusion it can be stated that a double parental vaccination with a gl deleted live vaccine protects sheep against a field-virus AD infection.

Animals↗