Calves in the MH group spent more time
lying down on d 0 through 8 compared with CN calves
(Fig. 6). Pedometer analysis determined a significant
(P < 0.05) interaction between treatment group and trial
day (Fig. 7). Evaluation of the average percent change in
BW determined a significant interaction (P < 0.05) between
treatment group and trial day. Calves challenged
with M. haemolytica had significantly more BW loss
postchallenge when weighed on trial d 2, 3, 5, 7, and 9
compared with CN calves (Fig. 8).
Average cortisol, substance P,