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General Information / Coccidiosis


Coccidiosis is an infection of intestinal epithelium caused by protozoan parasite of family Eimeriidae.

All livestock species, as well as wild animals, can be infected. Coccidiosis is especially prevalent when birds or mammals are grouped together. Coccidia oocysts are highly resistant to environment conditions, and disinfectants, making coccidiosis control difficult.

Coccidiosis is characterised by an invasion of the intestinal wall by the Coccidia parasite. The parasite then goes through several stages of growth and multiplication, during which damage occurs to the mucosal and submucosal tissues of the intestine.

Depending on the Coccidia strain involved and the animal species affected, the disease complexes can range from subclinical infections to infections that include severe intestinal problems with severe lesions in the gastrointestinal tract, to diarrhoea that can result in high mortality and/or a negative impact on the factors of production.

For the aforementioned reasons, several research institutes have put a great deal of effort into developing different options for controlling coccidiosis. Bayer, for example, developed Baycox® (toltrazuril), which represents one of the most efficient ways to control and prevent coccidiosis in various animal species.

Baycox® demonstrates powerful anticoccidial activity against different stages in the life cycles of the various Eimeria spp. of birds and mammals. It has produced excellent results in therapeutic and metaphylactic programs for a range of animal species.

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