Table 2.

Concordance of behavioural signs in 12 Holstein cows under LPS CHALLENGE and CONTROL situations at T−1 h, T + 3 h, T + 6 h, T + 12 h and T + 24 h after intravenous injection of LPS (0.5 µg/kg of BW) (or equivalent time in the CONTROL situation).

McNemar tests served to check whether cows had changed their behaviour between the two situations (change exists when p ≤ 0.05). For instance, regarding apathy at T + 6 h, 8 cows that were not apathetic in the CONTROL situation became apathetic in the CHALLENGE situation, while the 4 other cows were not apathetic in both the CHALLENGE and CONTROL situations (p = 0.01). NA corresponds to no cows changing their behaviour between the two situations.

Significant values are in bold.