Table 1 Protozoans/CP and their dose which cause necrotic enteritis in broiler chickens

1.

Eimeria necatrix

2 × 10⁴ oocysts/bird

De Cesare et al. (2020)

2.

Eimeria. maxima

2–5 × 10⁴ oocysts/bird

Gholamiandehkordi et al. (2007), Collier et al. (2008)

3.

Eimeria. acervulina

7.5 × 10⁴ oocysts/bird

Collier et al. (2008)

4.

Clostridium perfringens

10⁷ − 10⁹ CFU/g of intestinal contents

Shojadoost et al. (2012), Timbermont et al. (2009).