I’ve never applied (and I hear they are hard to get) but here’s some information below on applying for grants for your poultry business. There are also grants for greenhouses. High wind tunnels is the official name. Also, there are grants for community gardens.
https://www.nrcs.usda.gov/programs-initiatives/eqip-high-tunnel-initiative
https://www.rd.usda.gov/newsroom/news-release/usda-makes-more-grants-available-meat-and-poultry-processors
grants.gov
https://www.usda.gov/topics/farming/grants-and-loans
Involved in Gardening? Here Are Some Grants That Might Work for Your Organization
https://www.grantwatch.com/grantnews/involved-in-gardening-here-are-some-grants-that-might-work-for-your-organization/
https://growingspaces.com/gardening-grants/
https://www.fsa.usda.gov/news-room/news-releases/2022/usda-opens-peoples-garden-initiative-to-gardens-nationwide
https://www.usda.gov/topics/urban
https://www.beginningfarmers.org/usda-farmer-grants-and-other-funding/
https://raisechickensright.com/guides/how-much-does-it-cost-to-raise-chickens/
Little Rock Poultry 