Day-night variations in sleep and locomotor activity in lambs during the first 72 hours after birth and following the onset of rumination
Fig 6
Comparison of the mean (± SEM) percentage of time spent in each vigilance state during night and day (A and B), the mean (±SEM) number of episodes of each vigilance state (C and D) and the mean (± SEM) duration of episodes of each vigilance state (E and F), recorded during the first recording period (at birth) and the second recording period (after rumination). The percentages of each vigilance state, duration and number of episodes were calculated for each animal and then averaged for all animals separately for night and day. The significance levels were set at p < 0.05 (*), p < 0.01 (**), p < 0.001 (***), and p < 0.0001 (****).