HEMALATHA S.LALRINKIMATANUVASNAGARAJAN K.DHINAKAR RAJ G.THANGAVELU A.2024-01-022024-01-022021https://krishikosh.egranth.ac.in/handle/1/5810205353An etiopathological study was aimed to ascertain the prevalence of swine viral respiratory and reproductive diseases in pigs in and around Chennai, Tamil Nadu. Clinical samples consisted of blood, sera, nasal and rectal swabs were collected from two University Research Farms (URF) PGRIAS, Kattupakkam and ILFC, Madhavaram and two private farms located in and around Chennai. A total of 45 necropsies were conducted on pig carcasses during the study period consisting of 3 mummified fetuses, 17 still born fetuses, 5 pre- weaners, 8 weaners, 8 finishers and 4 adults. Representative tissue samples from the lungs, heart, liver, kidneys, spleen, lymph nodes, intestine and brain were collected on ice and in 10% neutral buffered formalin for histopathological, immunohistochemical and molecular studies. The common clinical signs recorded in the farms were abortions with mummification and still births. A few piglets showed generalized pallor, emaciation and rough skin and dermatitis was recorded in one grower piglet.EnglishThesis