Table 2.
Effects of dietary acidifier supplementation on the growth performance of broilers.1
| Item | NC | NC + antibiotic (8 mg/kg) | NC + PA (0.1 g/kg) | NC + PA (0.2 g/kg) | NC + PA (0.3 g/kg) | NC + LA (0.3 g/kg) | SEM | P-value |
|---|---|---|---|---|---|---|---|---|
| ADFI, g/d | ||||||||
| 1 to 21 d | 54.2 | 54.4 | 53.5 | 53.5 | 53.2 | 53.1 | 0.40 | 0.94 |
| 22 to 42 d | 145.0 | 148.4 | 151.0 | 147.21 | 143.7 | 147.9 | 1.30 | 0.68 |
| 1 to 42 d | 102.1 | 101.4 | 102.2 | 100.4 | 98.5 | 100.5 | 0.76 | 0.74 |
| ADG, g/d | ||||||||
| 1 to 21 d | 33.6 | 33.9 | 34.9 | 34.2 | 33.6 | 33.8 | 0.27 | 0.76 |
| 22 to 42 d | 73.2 | 75.3 | 79.9 | 77.1 | 76.1 | 76.8 | 0.82 | 0.36 |
| 1 to 42 d | 53.4 | 54.6 | 57.4 | 55.7 | 54.8 | 55.3 | 0.49 | 0.36 |
| F:G, g/g | ||||||||
| 1 to 21 d | 1.62 | 1.60 | 1.53 | 1.56 | 1.58 | 1.57 | 0.01 | 0.05 |
| 22 to 42 d | 2.05 | 1.97 | 1.89 | 1.91 | 1.89 | 1.93 | 0.02 | 0.08 |
| 1 to 42 d | 1.91a | 1.86ab | 1.78c | 1.80bc | 1.79bc | 1.82bc | 0.01 | <0.05 |
NC = negative control (basal diet); PA = phosphoric acid; LA = lactic acid; SEM = standard error of the mean; ADFI = average daily feed intake; ADG = average daily gain; F:G = feed-to-gain ratio.
a, b, c Within a row, values with different superscripts indicate a significant difference (P < 0.05).
1
Each value represents the mean of 6 replicates (n = 6).