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Prevalence and epidemiological features of ovine enzootic abortion in Lithuania

100%

Bagdonas J., Petkevicius S., Russo P., Pepin M., Salomskas A.

Polish Journal of Veterinary Sciences

2007

tom 10

nr 4

The aim of performed study was to determine the level of enzootic abortion (EA) in sheep breeding farms in different districts of Lithuania, to determine differences in clinical signs and infection frequency between various age groups, and to evaluate the sensitivity and specificity of complement fixation test for antibodies detection and indirect immunofluorescence for antigen detection in sheep chlamydiosis. The clinical, serological and immunological tests in sheep farms were performed in 2004 and 2005. Comparing different age groups of sheep revealed that the lowest number of infected sheep was registered in animals younger than 18 months (23.1%, antibodies titre 3.191 log2, P<0.05) and highest in animals aged 18 to 24 months (53.8%, antibodies titre 4.224 log2, P<0.001). In sheep aged more than 3 years, titre of antibodies was significantly reduced. The majority of infected sheep which aborted (86.4%) was registered in 18-24 month age group. Furthermore, in sheep which aborted the infection level was 2.5-fold higher as compared to sheep which didn’t abort. Analysis of smears from patological material by indirect FAT revealed that 54.5% of animals were positive to Chlamydophila abortus infection. The highest prevalence of chlamydia (66.7%) was registered in placentas of sheep which aborted.

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Prevalence of antibodies against Chlamydophila abortus and Coxiella burnetii in goat herds in Poland

100%

Czopowicz M., Kaba J., Szalus-Jordanow O., Nowicki M., Witkowski L., Nowicka D., Frymus T.

Polish Journal of Veterinary Sciences

2010

tom 13

nr 1

175-179

An epidemiological study was carried out to determine the herd prevalence of Chlamydophila abortus and Coxiella burnetii antibodies in goats covered by a milk recording program in Poland. The survey took place in 2007 and 48 herds located in different parts of the country were involved. A representative sample from each herd was taken by a simple random sampling allowing to detect seropositivity of a herd on a 95% level of confidence. In total 918 goats were tested for specific antibodies against both germs with the use of enzyme-linked immunosorbent assays. In addition, history of reproductive failures was recorded in these herds. The survey revealed that the herd prevalence of C. abortus was 4.2% (2 herds) while no C. burnetii antibodies were found. Abortions were reported to be a problem in 80% of herds while repeating estrus was encountered in 46% of herds. Reproductive failure concerned two seropositive herds as well. Since the germ is present in the population, it has to be taken into consideration in diagnostic process. Nevertheless, the results of the present study indicate that C. abortus infection occurs infrequently in Polish goats. As no antibodies against C. burnetii were detected in the screened sample the risk of goat-to-human transmission of both bacteria in Poland seems to be very low.

Ograniczanie wyników

2 Polish Journal of Veterinary Sciences

1 Bagdonas J.

1 Czopowicz M.

1 Frymus T.

1 Kaba J.

1 Nowicka D.

1 Nowicki M.

1 Pepin M.

1 Petkevicius S.

1 Russo P.

1 Salomskas A.

1 Szalus-Jordanow O.

1 Witkowski L.

1 2010

1 2007

Wyniki wyszukiwania

Prevalence and epidemiological features of ovine enzootic abortion in Lithuania

Prevalence of antibodies against Chlamydophila abortus and Coxiella burnetii in goat herds in Poland