Table 4.
The Mean (and standard deviations) of Average Daily Gain, Daily Feed Intake and Feed Conversion Ratio for the four types of enrichment material at different periods (1 to 4) and of the initial Weight and Final Weight.
| Enrichment Material Treatment | ||||||
|---|---|---|---|---|---|---|
| Chain | Wood | Straw | Paper | P treatment 3 | P time | |
| ADG 1 1,2 | 0.77 a ± 0.07 | 0.77 a ± 0.03 | 0.75 a ± 0.04 | 0.74 a ± 0.06 | NS | *** |
| ADG 2 | 0.92 b ± 0.08 | 0.91 b±0.13 | 0.91 b ± 0.15 | 0.92 b ± 0.068 | ||
| ADG 3 | 0.93 b ± 0.11 | 0.92 b±0.04 | 0.91 b ± 0.02 | 0.92 b ± 0.05 | ||
| ADG 4 | 0.94 b ± 0.07 | 0.97 b ± 0.05 | 0.98 b ± 0.04 | 0.95 b ± 0.09 | ||
| DFI 1 | 1.39 a ± 0.08 | 1.41 a ± 0.06 | 1.44 a ± 0.07 | 1.43 a ± 0.02 | NS | *** |
| DFI 2 | 1.72 b ± 0.14 | 1.63 b ± 0.037 | 1.71 b ± 0.19 | 1.76 b ± 0.15 | ||
| DFI 3 | 2.14 b ± 0.19 | 2.21 b ± 0.16 | 2.18 b ± 0.16 | 2.15 b ± 0.11 | ||
| DFC 4 | 2.45 b ± 0.19 | 2.51 b ± 0.15 | 2.56 b ± 0.15 | 2.48 b ± 0.13 | ||
| FCR 1 | 1.80 a ± 0.07 | 1.83 a ± 0.03 | 1.90 a ± 0.16 | 1.93 a ± 0.13 | NS | *** |
| FCR 2 | 1.87 a ± 0.12 | 1.86 a ± 0.22 | 1.90 a ± 0.11 | 1.94 a ± 0.12 | ||
| FCR 3 | 2.32 b ± 0.15 | 2.41 b ± 0.14 | 2.40 b ± 0.19 | 2.34 b ± 0.07 | ||
| FCR 4 | 2.62 b ± 0.22 | 2.59 b ± 0.24 | 2.61 b ± 0.10 | 2.61 b ± 0.24 | ||
| IW | 25.60 b ± 1.61 | 27.14 b ± 1.71 | 27.04 b ± 1.54 | 26.20 b ± 0.48 | ||
| FW | 105.94 b ± 6.26 | 107.96 b ± 4.12 | 106.43 b ± 4.63 | 106.16 b± 4.02 | NS | *** |
1 ADG: Average Daily Gain (in kg/day); DFC: Daily Feed Intake (in kg/day); FCR: Feed Conversion Ratio; IW = weight at 68 days of age (in kg); FW = weight at 157 days of age in kg. 2 Periods (in days of age) = 1: 68-90; 2: 91-107; 3: 108-129; 4: 130-157. 3 Means with different superscripts present significant differences due to treatment (row comparisons) or due to time (column comparisons). ***: P < 0.001; NS = not significant. Interaction treatment * time = NS.