Table 3.

Average determination coefficients (R²) of calibration curves of coccidiostats in feed samples.

Substance	Procedure 1	Procedure 2	Procedure 3	Procedure 4
Robenidine	0.971	0.979	0.590	0.994
Nicarbazin (DNC)	0.979	0.989	0.989	0.966
Lasalocid	0.975	0.998	0.992	0.994
Salinomycin	0.984	0.998	0.996	0.999
Monensin	0.989	0.997	0.994	0.997
Narasin	0.979	0.998	0.997	0.998
Maduramycin	0.982	0.997	0.995	0.989