[Serological test methods as replacement for infection trials in piglets to test the potency] of E. coli vaccines for sows (dams) [Article in German]

Main Article Content

Marion Krug
Dorothea Hausleithner
Regine Taddey
Peter Volkers
Babett Kobe
Klaus Cußler

Abstract

Escherichia coli (E. coli) related diarrhoea poses a major problem in piglet production. Vaccination of dams increases the antibody titre in their milk against relevant adhesion antigens. Transfer of maternal antibodies via the milk can serve to protect the suckling piglets from the disease. However, a marketing authorisation for veterinary use of these vaccines requires potency determination as assayed in infection trials in piglets. Enzyme immunoassays testing the antibodies in blood serum and colostrum samples from vaccinated dams against the relevant adhesion antigens, F4ab, F4ac, F6 and F41, were developed to replace the very distressing infection experiments by in vitro methods. Eight vaccines authorised in Germany were included in the trials. Vaccinated sows showed significantly higher antibody titres in blood and colostrum than unvaccinated control animals. Thus the enzyme immunoassays appear to be suitable to detect antibodies against four important adhesion antigens, and can be used to replace the distressing infection trials in piglets.

Article Details

How to Cite
Krug, M., Hausleithner, D., Taddey, R., Volkers, P., Kobe, B. and Cußler, K. (2005) “[Serological test methods as replacement for infection trials in piglets to test the potency] of E. coli vaccines for sows (dams) [Article in German]”, ALTEX - Alternatives to animal experimentation, 22(2), pp. 111-116. Available at: https://www.altex.org/index.php/altex/article/view/913 (Accessed: 13August2020).
Section
Articles