California National Animal Health Monitoring System for meat turkey flocks-1988-89 pilot study: management practices, flock health, and production.

A pilot project for a meat turkey National Animal Health Monitoring System was undertaken in California in 1988-89 to explore data gathering techniques and to estimate the frequency, magnitude, and variability of management, flock health (including administration of pharmaceuticals for prevention and treatment of disease), and production variables in order to facilitate planning for future food animal monitoring systems. Enteritis, which occurred in over one-third of the flocks, and colibacillosis, which occurred in nearly one-quarter of flocks, were the most common diseases reported. Mycoplasma synoviae was reported in two flocks and Mycoplasma gallisepticum and Mycoplasma meleagridis each were reported in one flock. Total mortality rate in the sample flocks was 9.0% (95% confidence interval [CI] 8.2%-9.8%). The tom-specific mortality rate was 10.9% (95% CI 9.8%-12.1%) and the hen-specific mortality rate was 6.6% (95% CI 5.7%-7.4%).