Necrotic enteritis occurs only seasonally or sporadically. How can I justify vaccinating pullet flocks that will lay most of their eggs during low incidence periods?
The incidence of clinical NE outbreaks can be associated with seasonal factors such as the quality of litter, which can be hard to maintain in cold weather, feed ingredient quality, coccidiosis and other diseases that damage the intestinal tract. At one poultry operation where sporadic outbreaks of NE resulted in increased mortality during colder months of the year, vaccination with Clostridium perfringens type A toxoid appeared to be beneficial. On the other hand, little is known about the incidence of subclinical NE, and it appears that this condition can occur throughout the year. In another series of trials involving four broiler operations with NE outbreaks during different seasons, vaccination with Clostridium perfringens type A toxoid appeared to benefit overall performance parameters, resulting in significantly better livability, feed conversion, calorie conversion, adjusted calorie conversion and lower production costs, although no reduction in the incidence of clinical outbre
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?
- Necrotic enteritis occurs only seasonally or sporadically. How can I justify vaccinating pullet flocks that will lay most of their eggs during low incidence periods?
- How old will a pullet be when she starts to lay eggs?
