There has been a common sense grown for long since among the broiler producers that the Necrotic Enteritis (NE) is a big problem & tend to focus on treating as they are used to do for other bacterial diseases. But, Is NE a real problem? If you think in depth it is not the problem, the real one lies usually being unchecked.
When birds suffer from subclinical coccidiosis specially by E.maxima, a chronic damage to the intestinal mucosa & leakage of mucus in the small intestine lead to hamper digestion & absorption of nutrients resulting passage of it into hind gut. This mucus along with unabsorbed nutrients favor the growth of C. perfringens, the causal agents of NE at their normal habitats.
Moreover, Coccidian parasites as damaging the gut epithelium, the C. perfringens get access to the intestinal basal line of the mucosal epithelium & the first phase of the pathological process takes place through invasion of the lamina propria by C. perfringens.
A further impact of Coccidiosis is shifting the gut microbial balance by decreasing the number of Segmented filamentous bacteria for example Candidatus savagella which activates the innate immune defense.
Along with coccidiosis the mycotoxins, poorly digestible protein, feed factors are the considerable factors behind the incidence of NE. Therefore, NE is just the shadow of any other real problem that needs to focus on.
Tools you may consider for solving the real problem: