the results of weighing, video observations and RFID
registrations for each focal pig are summarized. The average
weight of the focal pigs on day 44 was 40.2 ± 4.9 kg (mean ± SD).
In total 230 h were analysed on video (11.5 h for 20 focal pigs), giving
9.7 h of total feeding and 960 feeding visits captured on video.
The feeding duration for the individual pigs during the 11.5 h of
observations was 29 ± 14 min (mean ± SD). The number of feeding
visits was 48 ± 28 (mean ± SD). The average duration of each pig’s
feeding visits was 42 ± 18 s (mean ± SD) and the average gap between
two feeding visits of the same pig was 16 ± 13 min
(mean ± SD).
For the duration of feeding visits, one can see from Table 1 and
the numbers above that the variance between pigs (SD = 18 s) is
much smaller than the variance within pigs (average of the
SD = 56 s). The same holds for the gaps between feeding visits