Two strains of White Leghorn, IWN and IWP undergoing continuous selection for egg production in India from 1979 are analyzed to characterize their egg production process. McNally's, Compartmental, Modified Compartmental and Inverse Polynomial models were fitted for data pertaining to three generations and are compared for goodness of fit based on several criteria. It is seen that all the four models describe the egg production process of both IWN and IWP strains well. Due to simplicity and relatively less computing demands, McNally's model is preferred. The compartmental models are recommended when biological interpretation of the parameters is needed.
White Leghorn, McNally's model, compartmental model, modified compartmental model, inverse polynomial model, egg production curve
