Table 3.
Effects of in ovo feeding of N-acetyl-L-glutamate (NAG) on growth performance of 14-day-old broilers.1
| Variables | Treatment groups |
SEM5 | P-value | ||
|---|---|---|---|---|---|
| NC2 | SC3 | NAG4 | |||
| IW (g)6 | 42.15 | 40.87 | 41.47 | 0.34 | 0.299 |
| FW (g)7 | 408.01 | 412.77 | 390.57 | 8.09 | 0.564 |
| ADG (g) | 24.98 | 24.35 | 23.03 | 0.52 | 0.352 |
| ADFI (g) | 31.28a | 29.44a,b | 27.18b | 0.70 | 0.048 |
| FCR (g/g)8 | 1.253a | 1.210a,b | 1.181b | 0.011 | 0.013 |
a–bMeans within a row without common superscript differ significantly (P < 0.05).
1
N = 6, 12 birds in one replicate.
2
NC: non-punctured control group.
3
SC: saline-injected control group (eggs injected with 300 μL of saline water at 17.5 D of incubation).
4
NAG: NAG solution–injected group (eggs injected with 300 μL of saline water containing NAG 1.5 mg/egg at 17.5 D of incubation).
5
SEM: standard error of the mean.
6
IW: the initial weight of hatchlings at hatch.
7
FW: the weight of 14-day-age broilers.
8
FCR: feed conversion ratio.