Figure 4

Fecal consistency, culture and intestinal lesion scores in trials evaluating inoculation using feedballs (trial D), oral 100 mL inoculation (trial E), and oral 300 mL inoculation (trial F). Fecal consistency scores following intragastric versus oral or feedball inoculation with B. hyodysenteriae strain G44. Diarrhea severity is represented by an increasing intensity of green. Fecal culture result was evaluated based on the presence ( +) or absence (−) of strong beta hemolysis. Note the greater incidence and duration of diarrhea using the intragastric inoculation compared to feedballs in trial D.