Table 3.
Effect of zinc type on growth performance of broilers.
| Control | M-Zn 1 | Nano-ZnO 1 | M-Nano-ZnO 1 | SEM 2 | p Value | |
|---|---|---|---|---|---|---|
| Starter (d0–21) | ||||||
| Bird weight gain (g) | 846 c | 900 b | 914 b | 954 a | 14.5 | <0.001 |
| Feed intake (g) | 1156 | 1182 | 1205 | 1214 | 18.2 | 0.071 |
| Feed conversion ratio | 1.35 | 1.32 | 1.33 | 1.29 | 0.024 | 0.375 |
| Grower (d21–35) | ||||||
| Bird weight gain (g) | 1341 | 1343 | 1372 | 1397 | 24.3 | 0.49 |
| Feed intake (g) | 2060 | 2076 | 2124 | 2182 | 29.6 | 0.068 |
| Feed conversion ratio | 1.53 | 1.55 | 1.55 | 1.56 | 0.019 | 0.609 |
| Overall (d0–35) | ||||||
| Bird weight d35 (g) | 2232 b | 2282 a,b | 2324 a | 2363 a | 33.1 | 0.044 |
| Bird weight gain (g) | 2193 b | 2244 a,b | 2286 a | 2325 a | 32.8 | 0.043 |
| Feed intake (g) | 3237 b | 3259 b | 3312 b | 3442 a | 40.7 | 0.006 |
| Feed conversion ratio | 1.45 | 1.45 | 1.46 | 1.45 | 0.013 | 0.825 |
1 M-Zn = methionine-Zinc chelate; Nano-ZnO = nano zinc oxide; M-Nano-ZnO = methionine coated nano zinc oxide; 2 SEM = standard error of the mean. Superscript letters denote significant differences within rows