posted 12 years ago
It doesn't mean that it is USDA approved.
The USDA is a main channel for funding the Land Grant Universitie's "Extension Agents" program.
Through the years, USDA has funded many university programs to design chicken coops, hog pens, milking barns, and yes, smoke houses, among other buildings that can help a farmer to efficiently carry out the operations of his farm.
Many of these plans are readily available to anybody with internet access.