Fernando, T.S.R.Rajapakshe, R.P.V.J.Bullumulla, P.B.A.I.K.Wijesundara, K.2021-12-012021-12-0120109789550481002http://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/7817/35-23601~1.pdf?sequence=1&isAllowed=yDue to the recognition of subclinical infections with negative impacts on production as diseases, control of gastrointestinal (GI) parasites in cattle is becoming established. Cryptosporidiosis is a gastrointestinal zoonotic disease and there is no effective therapy for this disease. This study examines prevalence of gastrointestinal parasites in Badulla district including Cryptosporidium spp and identifies the significance of age, water source and feeding pattern for the prevalence of Cryptosporidium in cattle. The prevalence of gastrointestinal parasites including Cryptosporidium in faeces of 250 cattle in three age categories was examined. The eggs of gastrointestinal parasites were identified using the Mc Master method. Larval culture was done to identify the Genera of parasites. Qa Oocysts of Cryptosporidium were demonstrated using the Shearther's sucrose flotation method followed by staining with modified Ziehl Neelsen echnique. Prevalence of gastrointestinal parasites and Cryptosporidium in Badulla district was 57.20% and 15.20% respectively. Trichostrongyl spp, Haemonchus spp, Strongyloid spp, Toxocara spp, Trichuris spp, Moneiza spp, Eimeria spp were the common gastrointestinal parasites in cattle in Badulla district. Prevalence of Cryptosporidium is significantly higher in cattle of <6 months (57.89%) compared with 7-12 months and >12 months of age (P<0.05). Cryptosporidium oocysts were detected in cattle using surface and well water with the highest prevalence of infection (81.58%) were with surface water. There was no significant association of prevalence of Cryptosporidium oocysts with feeding pattern (P>0.05). These animals are likely to play an important role in the epidemiology of cryptosporidiosis in cattle and humans. These findings clearly demonstrate that cattle farmers and the people living in villages amidst cattle in Badulla district are more exposed to the infection. Key Words: Cryptosporidium spp, Gastrointestinal parasites, CattleenAnimal SciencesVeterinary SciencesOther