viral agents associated with mycoplasma infections in Ducks

1. The p~e~~lence of duok viral hepatitis (DVH) , duokplague, adenovirus and Newcastle disease (liD) infe-otions in 3 apparently healthy rmt ur e duck farms atdifferent looalities in ~ssiut ~nd Elwadi - El-Gadid-Governorates were studied.serologioally and virolo-gioally.2. Haermgglut1nation - inhibiting (HI) and precipitat-ing antibodies to liD virus were deteoted raspeotivelyin 76 and 18 samples out of 684 duok aeza examinedfrom the J flooks.J. HI ant ibod ies to adenovirus stra.in 121 were detectedin 6 out of 664 serum samples :from 2 out of J farms.This is cons idered a first report of strain 127 infec-t ion in ducks in EgyPt.4. Eleven serum samples from 2 farms revealed preoipitins