Table 1.
Composition of the experimental diets *.
| Ingredients (g/kg) | Control | OCM (2 %) | OCM (4 %) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Starter | Grower | Finisher | Starter | Grower | Finisher | Starter | Grower | Finisher | |
| Yellow corn | 532 | 583 | 641 | 512 | 563 | 621 | 492 | 543 | 601 |
| Soybean meal (44%) | 361 | 305 | 230 | 361 | 305 | 230 | 361 | 305 | 230 |
| Gluten (62%) | 45 | 46 | 59 | 45 | 46 | 59 | 45 | 46 | 59 |
| Soybean oil | 22 | 27 | 30 | 22 | 27 | 30 | 22 | 27 | 30 |
| Dicalcium phosphate | 16 | 15 | 15 | 16 | 15 | 15 | 16 | 15 | 15 |
| DL-Methionine | 2 | 1.8 | 1.2 | 2 | 1.8 | 1.2 | 2 | 1.8 | 1.2 |
| L-Lysine | 1.3 | 1.4 | 2.4 | 1.3 | 1.4 | 2.4 | 1.3 | 1.4 | 2.4 |
| Threonine | 0.5 | 0.3 | 0.1 | 0.5 | 0.3 | 0.1 | 0.5 | 0.3 | 0.1 |
| CaCo3 | 12 | 12 | 11 | 12 | 12 | 11 | 12 | 12 | 11 |
| NaCl | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 |
| Premix ** | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| NaHCO3 | 1.5 | 1.5 | 1.6 | 1.5 | 1.5 | 1.6 | 1.5 | 1.5 | 1.6 |
| K2CO3 | 0.2 | 0.5 | 2.2 | 0.2 | 0.5 | 2.2 | 0.2 | 0.5 | 2.2 |
| Olive cake meal *** | 0 | 0 | 0 | 20 | 20 | 20 | 40 | 40 | 40 |
| Chemical analysis | |||||||||
| CP (%) | 23.04 | 21.02 | 19.02 | 23.07 | 21.04 | 19.04 | 23.1 | 21.07 | 19.07 |
| ME (Kcal/kg) | 2951 | 3042 | 3143 | 2950 | 3041 | 3142 | 2950 | 3040 | 3141 |
| Ca, % | 0.93 | 0.892 | 0.834 | 0.93 | 0.892 | 0.834 | 0.93 | 0.892 | 0.834 |
| Avp. P (%) | 0.428 | 0.401 | 0.389 | 0.428 | 0.402 | 0.39 | 0.428 | 0.402 | 0.39 |
| Fiber (%) | 3.949 | 3.659 | 3.271 | 4.183 | 3.893 | 3.505 | 4.417 | 4.127 | 3.739 |
| Na (%) | 0.194 | 0.194 | 0.197 | 0.193 | 0.194 | 0.197 | 0.193 | 0.193 | 0.197 |
| Cl (%) | 0.252 | 0.251 | 0.25 | 0.251 | 0.25 | 0.249 | 0.25 | 0.249 | 0.249 |
* The basal diet fed to the chicks was formulated to meet the NRC [24] recommendations for broiler chickens; ** Premix (Hero mix® ,Hero pharm, Cairo, Egypt). Composition (per 3 kg): vitamin A 12,000,000 IU, vitamin D3 2,500,000 IU, vitamin E 10,000 mg, vitamin K3 2000 mg, vitamin B1 1000 mg, vitamin B2 5000 mg, vitamin B6 1500 mg, vitamin B12 10 mg, niacin 30,000 mg, biotin 50 mg, folic acid 1000 mg, pantothenic acid 10,000 mg, manganese 60,000 mg, zinc 50,000 mg, iron 30,000 mg, copper 4000 mg, iodine 300 mg, selenium 100 mg, and cobalt 100 mg). *** Olive cake meal (OCM) analysis (crude protein (CP; 9%), metabolizable energy (ME; 3320 Kcal/kg), Ca; 0.021%, available phosphorus (Avp.; 0.29%), ether extract; 13.7%, fiber; 11.6%).