Answer

Commercial chickens are those:

• produced by large scale operations which are devoted primarily to poultry breeding, and
  

• where breeding and selection is solely for traits that aid production of saleable commodities (such as meat and or egg production), and
  

• where there are flock records of selection measurables, production, health and vaccination history for over 10 generations, and
  

• which have an auditable biosecurity policy.