The treatment of coccidiosis: Studies on the sensitivity of recent field isolates of Eimeria acervulina type to anticoccidial drugs given in the drinking water
1982
Chapman, H.D.
Sulphaquinoxaline and sulphaquinoxaline plus pyrimethamine were effective against the Houghton strain of E. acervulina. Amprolium plus ethopabate, alkomide plus sulphanitran and sulphaquinoxaline plus diaveridine were partially effective but a mixture of nitrofurazone plus furazolidone had little effect. Sulphaquinoxaline and sulphaquinoxaline plus pyrimethamine were only partially effective against field isolates obtained from broiler and breeder farms throughout the United Kingdom and it was concluded, therefore, that resistance had been acquired to them. Amprolium plus ethopabate was also partially effective against field isolates but this was due to limited drug efficacy. Differences were found between drugs and their effect upon broiler and breeder isolates. It is concluded that sulphaquinoxaline and pyrimethamine may be the best treatment available for broiler chickens and that this drug and amprolium plus ethopabate may be of use for breeder birds.
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