TEARS - A SOURCE FOR NEWCASTLE DISEASE VIRUS IN DIAGNOSIS OF THE DISEASE IN CHICKEN

Abstract

Newcastle disease produces a variety of clinical conditions viz., drop in egg production, respiratory distress, diarrhoea etc. The diagnosis of new castle disease is not always easy as a number other diseases simulate the symptoms. Thus the accurate diagnosis almost always involve isolation, identification and characterisation of the virus (Alexander,1988). Successful isolation of Newcastle Disease Virus (NDV} has been made from tracheal swabs or respiratory discharge, cloacal swabs or faeces, trachea, lungs, spleen, proventriculus, intestine, brain, bone marrow and other organs. This paper describes isolation of NDV from tears of infected chickens and the advantage of sampling tears for diagonsis.