Etude sur les fluctuations de température relevées dans 5 locaux de post-sevrage en porcheries

Temperature was measured during 7 days, every 20 minutes, in 5 rooms of 3 weaning houses. All the rooms were artificially ventilated but they differed by their stocking rate which ranged from 0.5 to 2.3 m3 per animal.
The mean inside and outside temperatures were 23 +/- 3-degrees-C and 13 +/- 8-degrees-C. The outside temperature range was reduced, on average, by 60% either on a daily or a weekly basis. In terms of absolute values, the daily range varied from 2 to 80-degrees-C according to the room. An accurate estimate of the mean daily temperatures was already provided by just the minimum and maximum records. Only one measurement per hour was needed to assess the daily variations.
Advices related to the stability of temperature in the rooms have to be expressed in relative terms rather than in absolute values. A 60% reduction of the outside temperature range can be suggested as a reference.