Division of Livestock Economics, Statistics and Information Technology, Indian Veterinary Research Institute, Izatnagar - 243 122, (UP).
*Corresponding author: E-mail: shivprasad@ivri.up.nic.in
1Central Avian Research Institute, Izatnagar - 243 122.
The growth rate of egg production in poultry does not remain constant over time. Nine different functions are derived by solving the differential equations obtained from relative growth rate in egg production. The performance of these models is compared by using average 28-day egg production during first year of five flocks of hens. On the basis of different measures of goodness-of-fit, the model Nt = a exp (−bt + ct2)td is found most suitable among the nine models to describe average 28-day egg production during first year production of hens.
Relative growth rate, egg production models, differential equation
