Coccidiosis in chickens symptoms
Coccidiosis is a parasitic disease in animals. The disease is caused by protozoa, family Eimeriidae. In poultry (chickens), most species belong to the genus Eimeria and infect various sites in the intestine. The infectious process about 4–7 days and is characterized by parasite replication in host cells with extensive damage to the intestinal mucosa. Poultry (chickens) coccidia is generally host-specific and the different species parasitize specific parts of the intestine.
Coccidia is universally present in poultry-raising operations, but clinical disease occurs only after ingestion of relatively large numbers of sporulated oocysts by susceptible birds. Both clinically infected and recovered birds shed oocysts in their droppings, which contaminate litter, feed, water, dust, and soil. Pathogenicity is influenced by host genetics and species of the coccidium. Eimeria necatrix and E. tenella are the most pathogenic in chickens. See the pictures below, these chicken infected by E. tenella. There are severe lesions on caecum.
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There are many types of Eimeria that can attack chickens. Besides E. necartrix, E. tenella, there are still 7 other Eimeria. That is E acervulina, E brunetti, E maxima, E mitis, E praecox, E hagani and E mivati. In a farm that is endemic to coccidiosis cases can be found more than one type of Eimeria in a chicken.
See also : Avian Pox in Male Chicken
Coccidiosis is an important disease in chickens. The incidence rate of this disease is very high. Although the disease does not cause high mortality such as viral diseases, but, this disease has the opportunity to always occur repeatedly on the same farm. So the incidence rate is very high. Each production cycle can occur in endemic farms.
This happens because coccidia has the ability to survive well in a farm environment. Coccidia is very resistant to various disinfectants. So reasonable, if the agent of this disease is always present in the environment farm. This will allow for the occurrence of coccidiosis cases of each chicken production cycle. How to control the disease? Wait for our next article.
See also: Necrotic Enteritis Symptoms in chickens
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