Table 1. Summary of the experimental design used and total time of observation.
| Treatment | Procedure | Replicates | Total time of observation |
|---|---|---|---|
| Control A | No enrichment presented | 5 x 20 min | 100 min |
| Enrichment 1 | Scatter feed treatment | 5 x 20 min | 100 min |
| Control B | No enrichment presented | 5 x 20 min | 100 min |
| Enrichment 2 | Mobile ball device treatment | 5 x 20 min | 100 min |
| Control C | No enrichment presented | 5 x 20 min | 100 min |
| Enrichment 3 | Static box device treatment | 5 x 20 min | 100 min |
| Control D | No enrichment presented | 5 x 20 min | 100 min |