The village part of the model was run simultaneously in all 1,045 villages located in the Phitsanulok Province. The flow
of chickens started with animals from the young chicken compartment leaving the compartment as they grew older.
Half of all grown chickens stochastically moved into the stocked compartment and the remaining half to the ready-tosell
compartment. In each village, dead chickens were consecutively removed from each compartment as time passed by,
and the young chicken compartment was refilled by hatchlings produced from stocked chickens or imported from elsewhere
with the probability shown in Table 1.