Traditional anticoccidials such as chemical coccidiostats and ionophores have been used successfully to prevent coccidiosis for decades. However, Eimeria, the causative agent of coccidiosis, can develop resistance to these substances. Further, new regulations and consumer preferences on resistance concerns are changing coccidiosis management.  Many producers have implemented programs that rotate anticoccidials between flocks (rotation programs) or use different anticoccidials in starter, grower, and finisher rations (shuttle programs) to maintain and or improve Eimeria’s sensitivity to anticoccidials (Figure 1).