Three floor-pen trials have confirmed the high anticoccidial activity of CL 259,971 as first reported in batteries. The optimal dosage level was shown to be 5 ppm in the diet. At this level, excellent anticoccidial activity was observed with no adverse effect on weight or performance. The results indicated that 5 ppm of CL 259,971 provided efficacy and performance comparable to arprinocid or monensin, which were used for comparison in these trials.
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