On-line version ISSN 1678-4596
ROSSI, Rodolfo Santos; RIZZO, Huber; PIATTI, Rosa Maria and GREGORY, Lilian. Clinical signs and occurrence of antibodies anti-Chlamydophila abortus in ovines of São Paulo and Minas Gerais. Cienc. Rural [online]. 2012, vol.42, n.11, pp.2018-2024. Epub Sep 25, 2012. ISSN 1678-4596.
The Chlamydophila abortusi was previously known as Chlamydia psittaci sorovar 1, it is a Gram negative and obligate intracellular bacteria. This microorganism is frequently related with reproductive manifestation in ovines, goats and bovines. The major manifestation are Enzootic abortion in bovines and enzootic abortion in small ruminants. There are few literary material about clamidofilosis in Brazil, so the present research had the objective to determine the presence of complement fixing antibodies anti-Chlamydophila abortusi, correlating the results with the clinical examination and historical of the animals, besides variation in the zootecnic index, especially in the reproductive characters like high index of cio repetition, high abortion number, high neonatal mortality number etc. It was tested for the complement fixation test 220 serum ovine samples, from 26 properties, distributed in 19 cities, with historical of reproductive manifestation. It was found 19.55% (43/220) of positive tests to Chlamydophila abortusi, obtaining 61.53% of focus occurrence. In the study low antibodies titers were found, not superior of 64. Abortion was the major reproductive manifestation observed, expressing 65.12% (28/43) of the total number animals serum positive, followed by estrus repetition and weak lamb born, with a frequency of 6.98% (3/43) and, lastly, neonatal mortality death with 4.65% (2/43). No significant association was observed between serum positivity and these factors.
Keywords : ovine; sheep; abortion; Chlamydophila abortus; enzootic abortion in small ruminants; clamidofilosis.