2015 Cilt 9 Sayı 25

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Ephemeral fever outbreak in a dairy herd in Adana region
(Uludağ Üniversitesi, 2015-04-07) Çatık, Serkan; Cihan, Hüseyin; Özyiğit, M. Özgür; Şentürk, Sezgin; Veteriner Fakültesi
The aim of the study was to report an unusual outbreak of bovine ephemeral fever with high mortality rate. The study was conducted in a dairy cattle herd in September 2012, around Çukurova region in southern Turkey. The herd was consisting of 550 dairy cattle (n=550). In herd, 95 cattle with different symptoms died within one week. Only 225 sick cows were examined by routine clinical procedure. Necropsy was performed on 3 dead animals with dyspnea score of 3. Following clinical examinations, blood samples were taken from the most severely affected 17 cows. A haemocell counter analyzed hematologic parameters. Clinically, fever, nasal discharge and dyspnea were the common symptoms. The clinical, hematological and pathological findings were comparatively evaluated. Unlike previous reported outbreaks, affected animals had extremely severe respiratory distress caused high mortality rate. At necropsy of 3 dead animals, emphysematous lung tissue, pneumonia and edema as well as petechial hemorrhages on serosal and subendocardial surfaces of the heart were noticed. Emphysema was also identified in the subcutaneous connective tissues. Taking the results of the study into consideration, it has been determined that ephemeral fever in dairy cattle has high mortality rate (over 20%) in Adana region.