Aetology of the respiratory disease complex on some intensive cattle and sheep farms in Hungary
1999
Rusvai,M. | Izadpanah,R. | Fodor,L.
Studies were carried out on large-scale Hungarian sheep and cattle farms on which the annual occurence of pneumonia in the lambs/calves was 5-20%. Serological surveys revealed that bovine adonevirus type 2 (seroprevalence, 56% in cattle, 88% in sheep) and parainfluenza type 3 (76% and 41%) were the most widespread viral infections. The seroprevalence of bovine herpesvirus 1 in 3-to 8-month-old calves was 45% and the seroprevalence of ovine adenovirus in 2-to 6-month old lambs was 22%. Bacterial investigations revealed secondary infections, mostly caused by Pasteurella spp. P.multocida A strains were isolated from all 13 cattle herds. P.haemolytica A1 strains and Haemophilus somnus were isolated from 7 and 2 cattle herds, respectively. In the sheep flocks, P.haemolytica was most frequently isolated. 10 serotypes were identified; A2,A1 and A8 were most prevalent.
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