Fig. 1From: Risk factors for the presence of Fasciola hepatica antibodies in bulk-milk samples and their association with milk production decreases, in Cuban dairy cattleMilk production per cow per year according to the ELISA cut-off of the relative optical density ratio (ODR). Data are presented as mean ± SE (< 0.300, N = 92; 0.300–0.600, N = 257; > 0.600, N = 167). Bar indicates the SE. Different letters indicate significant differences among groups (P < 0.001)Back to article page