Also active in the animal feed, egg and pig breeding industries, Sofiproteol would lead a French consortium to make an offer for the entire group.
Early in June, the family owned firm went into administration with debt of 340 million euros ($423 million); the firms employs 3,400 and about 800 poultry farmers in France.
This situation has caused France's new Socialist government to intervene, which is trying to avoid a wave of factory closures after unemployment hit its highest level since 1999.
Doux is 80 percent family-owned, with the remainder held by French bank BNP Paribas.
A deadline for takeover bids for Doux expires July 5.
