Table 2.
Influence of dietary supplementation of vitamin E on the growth performance of 1- to 56-day-old male geese.
| ADFI (g/day) | ADG (g/day) | BW (g) | FCR | EPEF | |
|---|---|---|---|---|---|
| Effect of diet | |||||
| Control | 147.90 | 46.36 b | 1739.51 b | 3.31 a | 190.59 b |
| Vitamin E | 160.90 | 54.69 a | 1955.30 a | 2.96 b | 215.76 a |
| SEM | 6.53 | 1.62 | 57.78 | 0.07 | 6.85 |
| Effect of phase | |||||
| Phase 1 (days 1–14) | 43.91 d | 34.82 b | 579.60 d | 1.26 d | 329.18 a |
| Phase 2 (days 14–28) | 177.57 c | 66.19 a | 1506.33 c | 2.75 c | 203.43 b |
| Phase 3 (days 28–42) | 206.36 a | 65.32 a | 2420.83 b | 3.17 b | 182.40 b |
| Phase 4 (days 42–56) | 189.74 b | 35.77 b | 2882.86 a | 5.36 a | 97.69 c |
| SEM | 5.53 | 2.50 | 51.23 | 0.11 | 12.06 |
| Effect of diet × phase | |||||
| Control × Phase 1 | 43.08 d | 34.86 | 580.09 f | 1.23 e | 335.67 |
| Control × Phase 2 | 166.51 c | 58.04 | 1392.70 e | 2.91 cd | 175.19 |
| Control × Phase 3 | 190.65 b | 60.24 | 2236.14 c | 3.17 c | 168.46 |
| Control × Phase 4 | 191.35 b | 32.30 | 2749.11 b | 5.90 a | 83.04 |
| Vitamin E × Phase 1 | 44.75 d | 34.79 | 579.11 f | 1.29 e | 322.69 |
| Vitamin E × Phase 2 | 188.62 bc | 74.34 | 1619.96 d | 2.60 d | 231.66 |
| Vitamin E × Phase 3 | 222.07 a | 70.39 | 2605.51 b | 3.16 c | 196.33 |
| Vitamin E × Phase 4 | 188.14 bc | 39.24 | 3016.61 a | 4.81 b | 112.34 |
| SEM | 7.82 | 3.54 | 72.45 | 0.16 | 17.05 |
| F(df1, df2)=x, p-value | |||||
| Diet |
F(1, 6) = 1.98, p < 0.2094 |
F(1, 6) = 13.16, p < 0.0110 |
F(1, 6)= 6.97, p < 0.0385 |
F(1, 6) = 10.29, p < 0.0184 |
F(1, 6) = 6.73, p < 0.0410 |
| Phase | F(3, 18) = 394.1, p < 0.0001 | F(3, 18) = 47.3, p < 0.0001 | F(3, 18) = 492.9, p < 0.0001 | F(3, 18) = 217.4, p < 0.0001 | F(3, 18) = 71.4, p < 0.0001 |
| Diet × Phase |
F(3, 18) = 7.54, p < 0.0018 |
F(3, 18) = 1.72, p < 0.1996 |
F(3, 18) = 4.02, p < 0.0237 |
F(3, 18) = 4.74, p < 0.0132 |
F(3, 18) = 1.18, p < 0.3456 |
Means within each column with no common superscript differ significantly at p < 0.05; BW: body weight, ADG: average daily gain, ADFI: average daily feed intake, FCR: feed conversion ratio, EPEF: European poultry efficiency factor.