M. Z. AnsariSamanta Subhamoy2023-11-072023-11-071988https://krishikosh.egranth.ac.in/handle/1/5810200588Studies on the prevalence of Toxocara canis in dogs in and around Ranchi, on the basis of faecal examination revealed that of 197 faecal samples 42 (21.32 were positive for infection. The infection rate was higher 38.03 % (27 of 71) in 'stray dogs than 11.91 % (15 of 126) in 'owved dogs. In both stray' and 'omned' groups of dogs the infection rate was higher in young dogs of less than 1 year (1) age (47.17 % and 24.49 %) and lower in those above 1 year (1) age (11.11 % and 3.89 %) , respectively. On sacrifice of T. canis positive pups, the mean vorm burden vas 10.4 worms/pup and the ratio between male and female worms was almost equal (1.08 : 1). Temperature had profound effect on the embryo nation of T. canes eggs. Eggs kept in cultures reached the infective stage in 32-39 days at 17°C and 12 - 14 days at 27°c. Egg cultures maintained at 37°c disintegrated before reaching the infective stage. The average measurement of unembryonated eggs vas 86.2 by 75.6 , embryonated eggs 86.7 by 77.7 and second stage larvae, recovered from visceral organs, 352.8 by 20.3. Larval recoveries were maximum of 76.8 % in liver on day 2, 22.4 % in lungs and 11.1 % in kidney on day 5, 3.7 % in spleen and 2.7 % in eye on day 10, 57.3 % in skeletal muscles on day 15 and 40.1 % in brain on day 30 post-infection.EnglishThesis