| Autor: |
Straub OC; Bundesforschungsanstalt für Viruskrankheiten der Tiere, Tübingen., Bengelsdorff HJ, Wizigmann G |
| Jazyk: |
němčina |
| Zdroj: |
Zentralblatt fur Veterinarmedizin. Reihe B. Journal of veterinary medicine. Series B [Zentralbl Veterinarmed B] 1990 Feb; Vol. 37 (1), pp. 35-46. |
| Abstrakt: |
A purified concentrated BHV1 antigen that had been tested in field trials was also tested under isolated conditions in BHV1 positive and negative cattle. The antigen proved to act specifically even after storage for 2 years at +4 degrees C or for 6 months at 37 degrees C. The best results were obtained when the test was read 48-72 hours after the injection, which is in agreement with the field trials. The increase in skin thickness decreased unless boosted by infection or vaccination gradually. The test is unsuitable to control a vaccination programme. There was no correlation between the increase in thickness and humoral antibody titers. Repeated application of the intradermal injection of the antigen did not result in seroconversion in seronegative cattle. The biological limits of the test evaluation are discussed. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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