Chemotherapeutic approaches to protozoa: Coccidiae--current level of knowledge and outlook.

摘要: Progress in the treatment and prophylaxis of cyst-forming coccidial infections (Neospora, Sarcocystis Toxoplasma) Cryptosporidium has been limited (Table 1: Haberkorn 1996: Croft 1997: Wang 1997). However, new possibilities have opened up Eimeria-induced coccidiosis poultry mammals. due to improvements and, or metaphylaxis. A polyether antibiotic. semduramycin, recently added range effective prophylactic preparations. The development resistance anticoccidial agents is now posing similar problems those encountered with malaria, being particularly affected. Because no active ingredient from a family chemical substances developed for more than 10 years, following approaches are adopted get round this problem: use older preparations which not used long time, introduction combinations such as narasin nicarbazin methyl benzoquate clopidol alternating rotation shuttle programmes. goal real alternative, i.e. vaccination, achieved certain extent form live vaccines laying hens broiler breeders practiced some countries.