The Thai Journal of Veterinary Medicine


The treatment of chicken caecal coccidiosis with sulfamonomethoxine, at a concentration of 0.05 % in drinking water for 3 days, was performed on different days post oocyst inoculation.162 chickens were divided into 6 groups, 3 cages per group with 9 chicken each group. Chickens in groups 1-5 obtained 7x104 oocysts of Eimeria tenella, via a stomach tube. Chickens in group 1, 2 and 3 were treated on days 1-3, 2-4 and 3-5 post inoculation respectively. Group 4, a control group was infected but unmedicated. Group 5 was uninfected and unmedicated and group 6 was studied for drug toxicity observation. The parameters of the experiment were lesion scoring, mortality, haematocrit and oocyst counts. The results revealed that group 1 was the most effective treatment regime. No obvious histopathological change of the vital organs were seen in the toxicity testing group.


Faculty of Veterinary Science, Chulalongkorn University

First Page


Last Page