Table 4. Study B: key analysed values of starter and grower feeds (as is).
| Treatment | Dry matter (%) |
Crude protein (%) |
Crude fat (%) |
Ash (%) |
Fe (mg/kg) |
Microtracer (% recovery) |
Calculated ferric citrate content (mg/ kg feed)1 |
|---|---|---|---|---|---|---|---|
| Creep feed | 91.70 | 24.84 | 3.42 | 6.24 | 59.4 | NA | – |
| Starter diet (0–14 d) | |||||||
| T1 Control | 91.24 | 20.10 | 3.64 | 5.70 | 69.2 | NA | – |
| T2 Ferric citrate, 500 mg/kg feed | 90.93 | 20.06 | 3.60 | 5.68 | 162.4 | 97 | 485 |
| T3 Ferric citrate, 5,000 mg/kg feed | 90.18 | 20.11 | 3.62 | 5.40 | 1,012 | 93 | 4,650 |
| Grower diet (15–42 d) | |||||||
| T1 Control | 90.42 | 18.62 | 4.47 | 5.30 | 76.2 | NA | – |
| T2 Ferric citrate, 500 mg/kg | 90.26 | 18.62 | 4.48 | 5.32 | 168.7 | 98 | 490 |
| T3 Ferric citrate, 5,000 mg/kg | 90.38 | 18.64 | 4.50 | 5.20 | 1,023 | 88 | 4,400 |
Notes:
NA = Not applicable.
1
Calculated ferric citrate = % recovery of microtracer × ferric citrate dose.