Detection of pigeon paramyxovirus antibodies using haemagglutinaton inhibition test

This study was designed to detect the level of Newcastle disease antibody titers of local domestic pigeon in Ninavah governorate in Iraq by using Haemagglutination inhibition test (HI test). Eighty serum Samples were collected from these pigeon. Ninety percent of the positive birds for HI test were clinically affected with digestive, nervous and respiratory signs. The remaining 10% were sub clinically affected with no obvious signs. The nervous signs were the most predominant in affected birds ( 48.75% ) Which were being recovered in Mosul city. The result showed that all serum samples were positive for HI test with titers ranging from 2Log2 to 9Log2, the highest was 9log2, while the most predominant was 6log2.