Dr. C. J. DaveSolanki Devasibhai M.2023-05-052023-05-052021https://krishikosh.egranth.ac.in/handle/1/5810197048The present investigation was planned to evaluate the effects of cinnamon oil as an alternative to antibiotic growth promoter in broilers. A total of 144 broiler chicks were randomly allocated to six experimental groups, each of which consisting of four replicates and each replicate consisting of six chicks. The group Ⅰ chicks were served as a control and given basal diet without administration of any treatments. Chicks of group Ⅱ were given chlortetracycline as an antibiotic growth promoter (1 g/Kg feed) as a standard control. Chicks of group Ⅲ were given cinnamon oil (400 mg/kg feed) as a treatment control. Chicks of group Ⅳ were served as a negative control and given basal diet and challenged with E. coli at the dose rate of 1.0 ml (1.5×108 CFU/ml) orally on 14th day. Chicks of groups Ⅴ were given chlortetracycline (1g/kg feed) with E. coli (1.5×108 cfu/ml) orally on 14th day. Chicks of group Ⅵ were given cinnamon oil (400 mg/kg feed) with E. coli (1.5×108 cfu/ml) orally on 14th day of experiment.EnglishThesis