RESULTS OF SEROLOGICAL INVESTIGATIONS CONCERNING CHLAMYDIA, PORCINE PARVOVIRUS, PORCINE REPRODUCTIVE AND RESPIRATORY SYNDROME IN FARMS WITH REPRODUCTIVE PROBLEMS

摘要

A lot of causes can be the reason for reproduction problems in swine herds. The special role of Chlamydia is contested. Porcine Parvovirus (PPV) and Porcine Reproductive and Respiratory Syndrome (PRRS) are known as trouble makers. The question is: Which aspects have to be considered using only serological results of the above mentioned micro-organisms to find out what goes on in a farm. 342 blood samples from sows of 66 farms were tested. The minimum number of samples per farm (s/f) was at least three, the maximum 11, the average was five. For detecting Chlamydia-antibodies (abs) the complement fixation test (antigen: Chlamydia psittaci), a genusspecific test, was chosen and for PPV-abs the haemagglutination-inhibition test was used. PRRS-abs were checked in the IDEXX-HerdChek Elisa. Being on the threshold, sera were retested in the Immunoperoxidase Monolayer Assay (IPMA).