Figure 4. Broiler genetic line×coccidia infection interactions (P<0.001) for complement component 3 and protease inhibitors.

Line A and B broiler chicks were either not infected (control) or were inoculated with 1 of 3 Eimeria species, E. acervulina (EA), E. maxima (EM) or E. tenella (ET) at 15 d post-hatch. At 21 d (6 d post-infection) serum was harvested from whole blood samples and used for 2D gel electrophoresis followed by MALDI TOF/TOF. Protein density was evaluated by densitometric analysis of spot intensity followed by ANOVA. Values represent mean density units ± SEM (N = 6).