| efficacy of ionophorous anticoccidial drugs against coccidia in farm-reared pheasants (phasianus colchicus) from illinois. | litter samples obtained from a ring-necked pheasant propagation farm in illinois contained coccidia: 57.5% of the oocysts were eimeria duodenalis, 24.9% were e. tetartooimia, 8.8% were e. phasiani, and 8.8% were e. pacifica. ionophorous anticoccidial drugs were tested for efficacy against the pheasant coccidia. all three drugs reduced oocyst production and prevented mortality in young pheasants; unmedicated infected controls had a 40% mortality rate. monensin at 120 ppm in the feed was coccidioc ... | 1987 | 3619826 |