Commercial turkeys have been selectively bred to a point where natural reproduction is impossible, raising profound welfare questions alongside conventional concerns about housing and slaughter.
Commercial turkey welfare represents another case where selective breeding for maximum production traits has created animals that suffer as a direct consequence of their genetics. Broad-breasted white turkeys have been selected so aggressively for breast muscle growth that their cardiovascular systems cannot keep pace — sudden death syndrome from heart failure is a recognized mortality category in commercial flocks. Leg weakness from rapid growth causes a significant proportion of birds to struggle to stand or walk, limiting access to feed, water, and social interaction. The inability to reproduce naturally is both a welfare and an ethical indicator of how far from biological normalcy commercial breeding has taken the species. Heritage breed turkeys that retain the ability to mate naturally show dramatically better welfare profiles with significantly reduced metabolic disease, though at higher production cost.