Vairamuthu, S.Raja, A.Balasubramaniam, G.A.Manohar, B. MuraliTANUVAS2019-12-162019-12-162002-11http://krishikosh.egranth.ac.in/handle/1/5810137801TNV_IVJ_Nov2002_79_1145-1148Hydropericardium syndrome (HPS) is a very recent and mysterious disease affecting chicken. This disease was first reported in growing chicks in Pakistan (Khawaraja etaI., 1988). It was mainly seen in commercial broiler chicks aged 3-5 weeks and was characterised by hydropericardium filled with straw coloured fluid in the pericardial sac. No clinical signs except sudden death upto 60-70% (Ahamed et aI., 1989) could be observed.en-USVeterinary ScienceVeterinary PathologyArticle