Table 4.
Summary of oocyst shedding results from anticoccidial sensitivity test #1.
| Anticoccidial medication | Isolate 1—before seeding |
Isolate 2—after seeding |
Sensitivity category—Improvement after seeding? | ||
|---|---|---|---|---|---|
| % Reduction | Sensitivity category | % Reduction | Sensitivity category | ||
| Amprolium | −26 | R | 22 | R | Same |
| Clopidol | 37 | PS | 59 | PS | Same |
| Decoquinate | 89 | S | 94 | S | Same |
| Diclazuril | 15 | R | 31 | PS | Yes |
| Lasalocid | -8 | R | 18 | R | Same |
| Monensin | 31 | PS | 9 | R | No |
| Narasin | 2 | R | 24 | R | Same |
| Nicarbazin + narasin | 45 | PS | 37 | PS | Same |
| Nicarbazin | 28 | R | 47 | PS | Same |
| Robenidine | 100 | S | 99 | S | Same |
| Salinomycin | −31 | R | 32 | PS | Yes |
| Zoalene | 8 | R | 19 | R | Same |
The percentage reduction of oocyst shedding of Eimeria isolate 1 and isolate 2 in chickens provided an anticoccidial medicated feed compared with a nonmedicated feed. Percentage reduction of control group values are categorized as resistant (R, < 30% reduction), partially sensitive (PS, 30 to 70% reduction), or sensitive (S, > 70% reduction). An improvement in anticoccidial sensitivity after the seeding is determined by a change in the category rather than a change in % reduction.