Seroprevalence of Sub clinical Form of Hemorrhagic Enteritis in Commercial Meat-type Turkey Flocks of Iran by Elisa

Hemorrhagic Enteritis (HE) is a contagious disease in turkeys caused by avian adenovirus type II which leads to enteric disease and immune suppression and finally decrease flock performance. This study was carried out to examine HE seroprevalence within some commercial turkey flocks by ELISA technique. A total of 420 serum samples were collected from 21 meattype turkey flocks of 12 provinces of Iran and were examined serologically by ELISA test (Synbiotics ProFlock- HE, USA). Results showed that 76.2% of flocks were positive, 9.5% were suspect and 14.3% were negative based on Arithmetic mean titers (AMT) and interpretation of kit. From 420 serum samples, 292 sera (69.5%) were positive, 51 (12.2%) were suspect and 77 (18.3%) were negative. There were a significant positive correlation between HE titers with FCR and mortality rate (P