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Chief Editor:
M. R. Saseendranath
Kerala Veterinary and Animal Science University, Mannuthy, Thrissur, INDIA
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Indian Journal of Animal Research, volume 43 issue 2 (june 2009) : 84-88

NONLINEAR MODELS FOR POULTRY EGG PRODUCTION

Shiv Prasad, D.P. Singh*
1Division of Livestock Economics, Statistics and Information Technology Indian Veterinary Research Institute, Izatnagar -243122, India
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Cite article:- Prasad Shiv, Singh* D.P. (2025). NONLINEAR MODELS FOR POULTRY EGG PRODUCTION. Indian Journal of Animal Research. 43(2): 84-88. doi: .
Two nonlinear models were proposed to describe the poultry egg production curves for first
year egg production. These models were compared with gamma type, McNally modified gamma
type, compartment,. Adams-Bell model, double compartment,' logistic - curvilinear and logistic linear
on the basis of two data sets pertaining to egg production records arranged in 4-weekly
intervals. The fitting of these models was judged with coefficient of determination, mean square
error and mean absolute error.' A proposed model expressed as N, = a tb exp(ct2 + dO t) was
found best among all the models with respect to one data set and described egg production
curve better than gamma type, compartment model, Adams-Bell model, double compartment
model and McNally model for both data sets.
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