Fig. 4.

Dose–response curves obtained in adult motility inhibition assays with Ostertagia ostertagi at 6 h (A), 24 h (B) and 48 h (C) after incubation with different concentrations of SL-containing extracts ([log] μg dry extract/ml) from two chicory cultivars. Each data point in the graphs represents the mean motility percentage of 8 replicates (n = 4–6 adult worms per replicate) for each concentration obtained in two independent assays. Error bars represent S.D. between replicates. Data points with no error bars indicate that the variation among values was 0 or close to 0. Doted vertical lines represent EC₅₀ values for each chicory extract.