5. Conclusions
In the current study an increase in group size and in stocking density above the original Comfort Class conditions had detrimental effects on welfare and performance. Pigs in larger groups grew slower, displayed more tail lesions and spent less time rooting and drinking. Pigs housed at higher stocking densities grew more slowly, had more skin lesions on their hind quarters, showed less synchronisation in resting periods and displayed less usage of functional areas for fouling.
Therefore, results indicate that, even at more spacious levels, performance and animal welfare are compromised by intensification. However, a simple economic analysis indicated that the performance advantages of low stocking density did not compensate for increases in housing costs.
Conflict of interest statement
There is no conflict of interest.