As I understand it you are looking for the pro`s and con`s of the half orange approach.
Pro`s from a pest control view point, it makes sense to use and poison baits that are most attractive to the target species, are your costs so poor that you cannot afford to use liquid bait dispensers?
Cons: I`m sure that if you are looking to export your product are there sufficient safeguards that the poisoned product cannot enter production?
In this ever expanding market and shrinking world I would be suprised if some of the markets you are hoping to supply would accept your proposal for using the same foodstuffs for baiting rodents as are processed in plant.
There would appear to be an unacceptable risk of contamination.
Just a viewpoint from a food industry pestie in the UK, the restrictions in this neck of the woods are obviously much more stringent than in your area.
Regard
Bunny