No apparent effect of an experimental narrow confinement on heart activity and cortisol in domestic pigs

The effects of continuing spatial restraint were examined in domestic pigs. For this purpose, the animals (German Landrace barrows) were housed individually in metabolic cages (12 animals) and, as controls, in single pens (six animals). In six replications with two experimental animals and one control animal, we collected saliva each morning (0730 h) for the cortisol analysis, recorded the behaviour and the heart beat for 3 h/day (0800 to 0900 h, 1100 to 1200 h, 1400 to 1500 h). Each replication consisted of 5 days of habituation to single housing and 8 experimental days during which the experimental animals lived continuously in the metabolic cages.

Weight gain, cortisol, heart rate and heart rate variability were not significantly affected by experimental narrow confinement that only had a significant influence on the behaviours, locomotion and sitting.

In conclusion, the experimental animals adapted very fast and did not show physiological indications of chronic stress. However, the absence of apparent stress does not exclude other, subtler, welfare impairments.

S. Jaskulke and G. Manteuffel. No apparent effect of an experimental narrow confinement on heart activity and cortisol in domestic pigs. animal. 2011. Vol. 5: 433-438.

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No apparent effect of an experimental narrow confinement on heart activity and cortisol in domestic pigs

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