North American International Livestock Exposition (NAILE) is a livestock show held each November in Louisville, Kentucky and lasts for two weeks.
It is billed as the "world's largest all-breed, purebred livestock exposition", with nine major livestock divisions with competitors from the 48 contiguous states.
These divisions are beef cattle, Boer goats, dairy cattle, dairy goats, draft horses, quarter horses, llamas & alpacas, sheep, and swine.
Many of these go to the event to acquire purebred livestock semen and embryos to export from the United States.
This makes the event attractive to American "seedstock producers".