Fig. 3
From: Infrared thermography as a possible technique for the estimation of parturition onset in sows
Statistically estimated predictive margins of different temperatures measurements per time period (hours) around farrowing. Legend: Estimated auricular skin temperature measured by Infrared camera thermography (IRC) and Infrared laser thermography (IRT), and rectal temperature (RT) in 91 sows from > 48 h before farrowing until 24 h after farrowing (bars: 95% confidence interval) in three commercial piglet producing farms. The temperature originates from the estimated margins from the mixed model that accounts for repeated measurements on sow level, and for differences between farms, sow activity and the respiration rate at the time of the temperature measurement