Control of F. Magna and Prevention
For control of fascioloidosis in wild ruminants, successful application of anthelminthics in feed is necessary. The drug has to have flavour and smell that do not prevent animals from eating medicated feed. In addition, there should adequate therapeutic scope, i.e. span between therapeutic and minimal toxic dose. Therefore, only some of anthelminthics that are efficient in domestic ruminants have been tested in wild ruminants infected with F. magna. Several drugs, namely oxyclozanide, rafoxanide, albendazole, diamphenetide, closantel, clorsulon, and triclabendazole, have been used in control of F. magna infection in cervids. However, the results have differed between different authors. In the same way as for F. hepatica, triclabendazole seems to be the most effective against F. magna. Fascioloidosis of cervids was successfully controlled with triclabendazole in USA, and triclabendazole with levamizole in Hungary, Canada, Austria, and Croatia. In contrast, rafoxanide is commonly used in treatment in Czech Republic Slovakia and Hungary. Nevertheless, recent studies suggested that use of rafoxanide in control of F. magna infection should be considered. Unfortunately, rafoxanide in a commercial drug called Rafendazol Premix is the only registered drug for wild ruminants. Triclabendazole and others are produced as drugs for domestic animals and it can be used in free-living animals only with special permit.
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