An additional treatment (T0) consisted of 4 cages lined with
artificial turf matting in PSA and in the nest, but without litter distribution.
This treatment, which represents the main situation in
commercial livestock in France at present, allows a comparison
between the use of the PSA rubber mat used in this experiment
and the artificial turf mats, as used in Experiment 1.
All treatments were randomly distributed in the 3 batteries and
within the tiers.