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Diagnosis and Treatment of Coccidia and Escherichia coli Mixed Infections in Muteus swans

Zhang Sheng;Du Juan;Lu Yue;Tianjin Zoo;  
Coccidiosis is an infectious parasitic disease caused by coccidia of the genus Eimeria parasitizing the digestive tract of animals. Coccidia are usually parasitic in the jejunum, ileum and cecum of animals, which can cause digestive disorders and can not absorb nutrients normally, resulting in decreased body resistance, slow growth, and even death. The decreased immunity of animals caused by coccidiosis often increases the incidence of Escherichia coli, resulting in mixed infection,thereby aggravating the disease. Coccidiosis is a high incidence disease among waterfowl chicks in Tianjin Zoo, especially in the rainy season. Regular feeding of antiparasitic drugs is an important way to prevent coccidiosis. In our zoo, waterfowl chicks are usually raised together with their mothers, so they intake a small amont of feed mixed with preventive drugs, which could not achieve the preventive effect. They need to be fed separately after catching. In the summer of 2019, coccidia caused the disease of mute swan chicks in our zoo firstly, causing some of the chicks to die. After analysis, the cause of death of young chicks was coccidia and Escherichia coli mixed infection, which has a lot to do with the excessive variety of animals raised in the waterfowl lake and the high stocking density in our zoo.
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