Table 5.
Effect of supplementation with ZnSO4 or ZnAA on performance in broilers.
| Period | BW (g/animal) | BWG (g/animal/day) | FI (g/animal/day) | FCR | |
|---|---|---|---|---|---|
| 0–10 D | ZnS | 284.7 ± 5.6 | 24.4 ± 0.5 | 28.6 ± 0.9 | 1.172 ± 0.018 |
| ZnAA | 290.5 ± 5.8 | 25.0 ± 0.5 | 28.7 ± 0.9 | 1.149 ± 0.012 | |
| P-value | 0.063 | 0.061 | 0.860 | 0.029 | |
| 10–28 D | ZnS | 1,572 ± 38 | 71.5 ± 2.0 | 104.2 ± 3.2 | 1.456 ± 0.022 |
| ZnAA | 1,597 ± 40 | 72.6 ± 2.0 | 104.7 ± 2.8 | 1.441 ± 0.017 | |
| P-value | 0.207 | 0.283 | 0.720 | 0.167 | |
| 28–36 D | ZnS | 2,423 ± 43 | 106.4 ± 3.1 | 171.6 ± 3.9 | 1.613 ± 0.051 |
| ZnAA | 2,456 ± 46 | 107.4 ± 3.7 | 174.7 ± 3.9 | 1.627 ± 0.046 | |
| P-value | 0.188 | 0.487 | 0.170 | 0.405 | |
| 0–28 D | ZnS | 54.7 ± 1.4 | 77.2 ± 2.2 | 1.411 ± 0.019 | |
| ZnAA | 55.6 ± 1.4 | 77.5 ± 2.0 | 1.394 ± 0.014 | ||
| P-value | 0.207 | 0.733 | 0.073 | ||
| 0–36 D | ZnS | 67.3 ± 1.2 | 98.2 ± 2.4 | 1.459 ± 0.019 | |
| ZnAA | 68.2 ± 1.3 | 99.1 ± 2.1 | 1.453 ± 0.016 | ||
| P-value | 0.187 | 0.405 | 0.375 |
ZnS: ZnSO4; ZnAA: zinc amino acid complexes.
Body weight (BW) was determined at the last day of each period (day 10, 28, and 36). Body weight gain (BWG), feed intake (FI), and feed conversion ratio (FCR) were determined at the end of the 3 periods.
ZnSO4 (ZnS) and zinc amino acid complexes (ZnAA). Data represent mean ± standard deviation (N = 10).