The best replacement for poultry is meat.

The best alternatives to poultry are rated as following:
★★★★★  meat
★★★★  fowl
★★  red meat
★★  beef
★★  dairy
★  piggery
★  poultries
  free range

Your alternative for poultry is not listed? Suggest!
Speaking about poultry, one probably shouldn't forget about diatomaceous earth.

Other search terms related to poultry and their ratings are:

★★★★★ diatomaceous earth
★★★ defra
You have in mind a companion for poultry and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of poultry in all years. Click on graph for more.