Table 3.
Effect of glycine on the growth performance of heat-stressed broilers.
| Effect of glycine under HT |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Treatments1 |
CON vs. HT |
P value |
||||||||
| Items | CON | HT | 0.5%Gly | 1.0%Gly | 2.0%Gly | SEM | P value | Main effect | Linear | Quadratic |
| IBW (g) | 600.67 | 600.00 | 601.83 | 597.67 | 599.83 | 1.28 | 0.821 | 0.746 | 0.698 | 0.951 |
| FBW (g) | 1290.83 | 1104.69 | 1096.06 | 1122.41 | 1177.50 | 9.34 | <0.001 | 0.003 | 0.001 | 0.036 |
| ADFI (g) | 86.15 | 65.44 | 64.35 | 69.37 | 74.62 | 1.04 | <0.001 | <0.001 | <0.001 | 0.026 |
| ADG (g) | 49.30 | 36.05 | 35.3 | 37.48 | 41.26 | 0.66 | <0.001 | 0.001 | 0.001 | 0.029 |
| G: F | 1.72 | 1.90 | 1.86 | 1.85 | 1.79 | 0.02 | 0.001 | 0.037 | 0.007 | 0.565 |
Abbreviations: FBW, final body weight; G: F, gain: feed ratio; IBW, initial body weight.
1
CON: basal diet and raised under thermoneutral conditions; HT: basal diet and raised under cyclic high-temperature conditions; 0.5% Gly, 1.0% Gly, 2.0% Gly: basal diet supplemented with 0.5%, 1.0%, 2.0% glycine under cyclic high-temperature conditions (n = 6).