Efficacy of volatile oils [curzerene, furanoeudesma-1, 3-diene and lindestrene] on avian coccidiosis under laboratory conditions

The coccidicidal efficacy of volatile oils [curzerene, furanoeudesma-1, 3- diene and lindestrene] against unsporulated and sporulated chicken Eimeria species oocysts was tested in three concentrations: 1, 2 and 3 micro g/ml. Marked reduction in the number of living oocysts was recorded in exposed groups. The concentration of 3 micro g/ml volatile oils induced the highest destructive effect. 58.1% of viable unsporulated oocysts were destroyed. A mean number of 153,800 oocysts was the difference between the total number of the produced oocysts per gram faeces in the group infected with exposed oocysts and that of the group infected with nonexposed oocysts being less in the exposed group with more reduction in the vitality of shedding oocysts in the former group. At the meantime, the postmortem and histopathological microscopical examination of the intestine and caecum of' the tested group revealed a reduction in the intestinal lesions in the group infected with the exposed oocysts

Efficacy of myrrh in controlling coccidioses in chickens

Myrrh was used for controlling the infection with Eimeria species in chickens. A total of 120 one-day-old native breed chickens bought from commercial hatchery were used in the experiment. Birds were feed on starter balanced ration free from anticoccidial drugs. At age of 2 weeks the chickens were divided into 4 groups [1-4], 30 chicks each. Chickens of first group were inoculated by 50000 sporulated oocysts of mixed local field isolated Eimeria species and served as infected non treated control group. Birds of the second group were infected similarly and received simultaneously 10 mg Myrrh/ bird by oral route. Birds of group 3 was supplied with Myrrh 10 mg/ bird one day before infection by coccidia [50000 oocyst /bird] .Last chicken group was left as non-infected non treated control group Measurements to evaluate the efficacy of Myrrh as anticoccidial drug included; mortality percentage; lesion score at 5 day post infection and the total oocyst output/gm of fecal dropping. The results showed that the mortality rate reached 10% and 3.33% in groups 2 and 3 respectively, while it reached 26.66% in infected non treated control group. High lesion score was recorded in infected non treated group followed by infected treated chicken groups regardless the time of treatment. The feed conversion rates reached 3.14 in infected non treated chicken group against 2.47 and 2.21 in treated chickens groups, 2 and 3 respectively. Mean oocyst count per gram faecal dropping [OPG] was reduced significantly in group 3 when compared with other infected treated or infected non treated chicken groups