How long does the protection afforded by Clostridium perfringens type A toxoid last in progeny chicks?
To date, no specific data on the duration of protection has been generated. Review of scientific literature on the subject indicates that passive maternal protection against other infectious diseases can be expected to last from 2 to 3 weeks. In laboratory trials performed by Schering-Plough Animal Health to test the efficacy of Clostridium perfringens type A toxoid vaccination, 21-day-old broilers were challenged with a high dose of C. perfringens that resulted in lesions and mortality in control birds. Broiler chicks from hens vaccinated with Clostridium perfringens type A toxoid showed a significant reduction in the incidence and severity of typical NE lesions compared to the controls.
Related Questions
- If I vaccinate my pullet flocks with Clostridium perfringens type A toxoid, do I still need to use water acidifiers, probiotics, enzymes and prebiotics to keep my antibiotic-free flocks free from NE?
- Will Clostridium perfringens type A toxoid protect the hens as well as the progeny against NE outbreaks?
- How long does the protection afforded by Clostridium perfringens type A toxoid last in progeny chicks?
