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Serological Observations on Chlamydia Psittaci Infection in Finnish Dairy Herds

Serologiska observationer över Chlamydia psittaci infektioner i mjölk producerande besättningar i Finland

Abstract

Chlamydial complement fixing antibodies were followed in 5 small Finnish dairy herds. All 53 animals in the herds were bled. In herds A, B, C and D the blood samples were collected in May and in the following autumn after the pasturing period and in herd E over a period of 2 years at about 1 ½-month intervals. The frequencies of positive reactions among the adults and the calves younger than 1 year did not differ significantly from each other, but there were considerable seasonal variations in the frequencies. The highest frequency was found during springtime and early summer and the lowest in autumn.

Sammanfattning

Komplementbindade antikroppar av Chlamydia psittaci följdes i fem finska mjölkproducerande besättningar. Alla 53 djur i besättningarna testades. I besättningarna A, B, G och D samlades blodproven i maj och följande höst efter betesperioden och i besättningen E under två år med ungefär 1½ månadens intervaller. Frekvensen av antikroppar bland de fullvuxna djuren och kalvar yngre än ett år skiljde sig inte signifikant från varandra men betydliga säsong-variationer konstaterades. Frekvensen var högst om våren och i början av sommaren och lägst om hösten.

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Neuvonen, E., Pyörälä, E. Serological Observations on Chlamydia Psittaci Infection in Finnish Dairy Herds. Acta Vet Scand 22, 1–8 (1981). https://0-doi-org.brum.beds.ac.uk/10.1186/BF03547200

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