Atoxoplasmosis in goldfinches (Carduelis carduelis): diagnosis and therapeutic essay
DOI:
https://doi.org/10.19230/jonnpr.3048Keywords:
Isospora serini, merozoites, sulfadoxine, pyrimethamine, hepatomegaly, cytologyAbstract
Aims. The diagnosis of ante-mortem atoxoplasmosis in passerines is sometimes complicated because taking samples from such small animals. The aim of this study is to demonstrate that puncture and liver cytology is a reliable, easy and safe diagnostic method. Also, a treatment protocol is proposed that combines three drugs to combat and eliminate the merozoites of Isospora serini (syn. Atoxoplasma) at the extraintestinal phase of atoxoplasmosis.
Material and methods. Four goldfinches (Carduelis carduelis) with clinical symptoms (inactivity and hepatomegaly) are used to perform this test. Those birds are diagnosed with atoxoplasmosis through coprological analysis and liver cytology, and was administered a protocol combining sulfadoxine, pyrimethamine and toltrazuril.
Results. Is verified a remission of the symptomatology with reduction of the hepatic size, and reduction in some cases and total elimination in others of oocysts in feces and merozoites in mononuclear cells.
Conclusions. The reduction of parasites in the intestinal and extraintestinal phases due the treatments administered can help to overcome the critical period, until the birds can become immune to infections by Coccidium. The goldfinches have remained asymptomatic since the beginning of the treatments and for a long period of time with the protocol administered in this study. But is not possible to confirm that the parasite has been completely eliminated because the existence of possible false negatives. Then, new researches to compare different protocols and confirm the results of those studies are required.
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