Occurrence: Worldwide. Species affected: Chicken. Age affected: All.

Causes: Chicken tapeworm- Raillietina species.

Effects: Emaciation, degeneration and reduced growth rate.

Fifty percent of the intestinal tracts of chickens may contain tapeworms (cestodes) if they are reared on range or in backyard flocks. In contrast, birds confined within poultry houses seldom become infected. Tapeworm infestations are now considered rare ...