| health survey of backyard poultry and other avian species located within one mile of commercial california meat-turkey flocks. | a survey was conducted to characterize domestic and exotic bird populations, estimate seroprevalence to selected disease agents, and describe health management practices on 62 premises containing "backyard" flocks located within one mile of 22 commercial california meat-turkey flocks participating in national animal health monitoring system (nahms). chickens were present on 56 backyard premises and turkeys on seven. antibodies were identified against mycoplasma gallisepticum, m. synoviae, m. mel ... | 1991 | 1854324 |