Coccidiosis and necrotic enteritis in turkeys.

A flock of turkey primary breeder candidates experienced increased mortality within 1 week of being placed in a growout house at 5 weeks 4 days of age. The flock was placed on wood shavings that had been used by an older flock for 2 weeks immediately before placement. Necropsy revealed severe coccidiosis and necrotic enteritis primarily in the distal jejunum, ileum, cecum, and colon. Clostridium perfringens was cultured from intestines. When breeders were selected at 17 weeks of age, total mortality in the affected flock was twice that of a comparable flock placed on fresh litter. Weight at selection in the affected flock was also significantly lower than in flocks placed on fresh litter at the same time in the same growout house.