he present study was adopted to evaluate the efficacy of Garlic, Myrrh and Nigella sativa as anticoccidial agents in the ration of broilers against experimental coccidiosis . The parameters used are clinical signs, mortality, live body weight, weight gain, feed consumption, feed conversion ratio, feed efficiency, oocyst output and caecal lesion scoring . One hundred and twenty five Hubbard chicks of one-day old coccidia free were used in this experiment. Chicks were randomly divided into five groups (25 chicks per group). The groups were separately kept according to thetreatment in wire floored. Chickens were given Garlic (Allium sativum) at dose level of 5% of the ration.
Myrrh (Commiphora molmol) at rate of 200 ppm and Nigella sativa 5% of freshly minced seeds were added to the ration. All additives were given continousely for 42 days beginning from the 1st day of age .At the age of 14 days; birds were infected experimentally with 80.000 sporulated oocyst/ bird directly into crop using field strain from Eimeria tenella. Faecal samples were examined for oocyst weekly post experimental infection .The obtained results elicited that , all additive obscure the clinical signs, reduced the mortalities ,improved live body weight, weight gain, feed consumption ,feed conversion ratio and feed efficiency as well as decreased shedding of oocyst and reduced caecal lesion scoring as compared with infected untreated group. Garlic was found to be superior in action and responsiveness than Myrrh and Nigella sativa . It could be concluded that theses additives posses an anticoccidial activity and may be valuable for broiler chickens