Fig. 1.

Changes in ruminal LPS activity in Holstein bulls. Anti-LPS antibody was administered once daily at a dose of 0 or 4 g. Days −1, 0, 1, and 2 denote observations during the pre-challenge (day −1), subacute ruminal acidosis challenge (days 0 and 1; gray squares), and post-challenge (day 2) periods. Sampling times of day are shown as 8 (800 h) and 14 (1,400 h). Values represent means ± SE.

^*Significant difference between the 0 and 4 g groups at that time point (p < 0.05); ^†Significant changes during the SARA challenge period (p < 0.05).

LPS, lipopolysaccharide.