This study aimed to assess the fluctuations of antibody serum titers for and in naturally infected crossbred cows during gestation and to investigate transplacental transmission of ; 51 cows were monitored during pregnancy by monthly serologic testing by indirect fluorescent antibody test. 33 cows were seronegative for both and , 10 were seropositive only for , 5 were seropositive only for and 3 were seropositive for both and . In both protozoan infections, great variation in antibody levels in pregnant cows was observed, and there was significant increase (p<0.05) in the comparison between the averages of serological titration per trimester. There was a significant correlation (p<0.05) between month and probability of seropositivity for . We conclude that pregnancy influences antibody titers of crossbred cows naturally infected with and/or , and that serologic testing for in pregnant cows from the sixth month of gestation onward may decrease the number of false negative results.
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| http://dx.doi.org/10.29374/2527-2179.bjvm003023 | DOI Listing |
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