[Testing of a new bait for the oral immunization of red foxes (Vulpes vulpes) against rabies]. / Testung eines neuen Köders für die orale Immunisierung des Rotfuchses (Vulpes vulpes) gegen Tollwut.

A field trial is described for testing the acceptance of a new machine made bait (ALTROFOX/91) for oral immunization of red foxes. The investigations were undertaken in direct comparison with a bait with known attractiveness for foxes. After the choice of suitable field trial areas the baits were distributed at a density of 18/km2 by fixed-wing aircraft. Each bait version contained a different derivate of tetracycline as a biomarker. The evaluation of the attractiveness and acceptance by red foxes and non target species was established by visual controls on the third, seventh and 14th day after distribution and biomarker proving in bone specimens of investigated animals.

[IBR/IPV virus antibodies in the wild boar--the host spectrum of herpesviruses]. / IBR/IPV-Virusantikörper beim Schwarzwild--Beitrag zum Wirtsspektrum der Herpesviren.

Studies with serum neutralization test on 443 sera from black boar against antibodies of BHV 1 have produced the first evidence ever to the presence in this species. Titres were about 1:2. Findings are discussed under aspects of spectrum of BHV 1 with reference to swine and under epizootiological aspects.

[Seroepidemiologic studies of the distribution of respiratory syncytial virus in wild ruminants]. / Seroepidemiologische Untersuchungen zur Verbreitung von Respiratory Syncytial Virus unter Wildwiederkäuern.

Sera from wild ruminants (302 roe, 39 red deer, 17 fallow deer, 1 mouflon) were tested for antibodies against respiratory syncytial virus (RSV). 22 sera (6.1%) were positive: 20 roe, 1 red deer, 1 mouflon. The findings are discussed from the epizootiological point of view.

[Detection of antibodies against Brucella in the aqueous humor using ELISA]. / Nachweis von Antikörpern gegen Brucellen im Augenkammerwasser mittels ELISA.

In aqueous bulbi of experimentally against Brucella abortus immunized guinea pigs and rabbits specific antibodies could be detected by ELISA-tests. This first demonstration of brucella antibodies in the aqueous shows that aqueous can be used for serological examinations. For practical use more investigations in experimental animals are necessary, e.g. on kinetics of orbital antibodies absence of interfering factors and biomechanics of proteins in aqueous.