OCCURRENCE OF ANTIBODIES TO THE SPERMS IN BLOOD SERA OF BULLS AND BOARS

Blood sera obtained from 2 064 bulls randomly selected in artificial i nsemination stations and bull rearing stations were examined for the p resence of autoantibodies to the sperms (AbS) using the developed enzy me-linked immunosorbent assay (ELISA). At serum dilution 1 : 40 the in cidence of positive bulls was 26.7%. In individual investigation perio ds the incidence of AbS ranged between 9 and 39.7%. In a set of 586 bu lls the presence of antibodies to Chlamydia sp. was detected in blood sera in 32.1% by a micromethod of complement binding. The possibility of involving genital infection as one of several factors taking part a t the development of AbS is discussed. Examination of blood sera of 98 1 boars for the presence of AbS by ELISA method revealed positivity on ly in 7.74%.