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Evolution of glandular scores after 21 and 42 days of control diet (hay ad libitum +5.7 ± 1.6 kg DM concentrates) or alfalfa diet (hay ad libitum +3.0 ± 0.8 kg DM concentrates +2.8 ± 0.6 kg DM alfalfa pellets) among the intensively exercised trotters that were in the ulcerated group (glandular scores 2‐4) when entering the trial. Horizontal lines indicate test cut‐off. * P < .05; ** P < .01; ns, nonsignificant.
