One hundred and twenty Isa Brown pullets used in the study were procured from Zartex Farms, Ibadan. At the time of starting off the experiments the pullets had received various vaccinations including Gumboro, Lasota,Fowl pox, NDV kamorov. The birds were randomly allocated to four dietary treatment groups such that each treatment had three replicates comprising 10 pullets per replicate and 30 pullets per treatment in a 3 x 4 CRD
design.