EN
An outbreak of infectious thinitis and tracheitis in the flock of heavy turkeys not vaccinated agains this disease was described. The flock consisted of 2007 female and 170 male turkeys aged 45 weeks. In the course of the disease 2.06 per cent of the turkeys died and 20.5 per cent were rejected as defective due to ovaria falling and changes in the lungs. The drop in egg laying and hatching was 48.5 per cent and 11.7 per cent, respectively. The turkeys with clinical signs were treated with tetracyclines, mineral preparations containing Se and vitamins A, E and C.