Table 4.
Diet composition, experiment 2 (as-fed basis)1
| Fish meal2 | |||
|---|---|---|---|
| Ingredient, % | Control | 3% | 6% |
| Corn | 40.55 | 42.70 | 44.86 |
| Soybean meal, 46.5% | 32.75 | 28.06 | 23.37 |
| Corn DDGS3 | 10.00 | 10.00 | 10.00 |
| Spray-dried whey | 10.00 | 10.00 | 10.00 |
| Fish meal | – | 3.00 | 6.00 |
| Choice white grease | 3.00 | 3.00 | 3.00 |
| Limestone | 1.05 | 0.91 | 0.78 |
| Monocalcium P, 21% P | 1.05 | 0.70 | 0.35 |
| Sodium chloride | 0.30 | 0.30 | 0.30 |
| l-Lys HCl | 0.35 | 0.35 | 0.35 |
| dl-Met | 0.15 | 0.14 | 0.14 |
| l-Thr | 0.11 | 0.12 | 0.13 |
| l-Trp | – | 0.01 | 0.03 |
| l-Val | 0.03 | 0.04 | 0.05 |
| Phytase4 | 0.02 | 0.02 | 0.02 |
| Zinc oxide | 0.25 | 0.25 | 0.25 |
| Trace mineral premix5 | 0.15 | 0.15 | 0.15 |
| Vitamin premix6 | 0.25 | 0.25 | 0.25 |
| Total | 100 | 100 | 100 |
| Calculated analysis | |||
| SID amino acid, % | |||
| Lys | 1.35 | 1.35 | 1.35 |
| Ile:Lys | 64 | 62 | 61 |
| Met:Lys | 35 | 36 | 37 |
| Met and Cys:Lys | 58 | 58 | 58 |
| Thr:Lys | 63 | 63 | 63 |
| Trp:Lys | 18.5 | 18.5 | 18.5 |
| Val:Lys | 71 | 71 | 71 |
| Total Lys, % | 1.52 | 1.53 | 1.53 |
| Metabolizable energy, kcal/kg | 3,408 | 3,435 | 3,461 |
| Net energy, kcal/kg | 2,509 | 2,540 | 2,571 |
| SID Lys:metabolizable energy, g/Mcal | 3.96 | 3.93 | 3.90 |
| Crude protein, % | 23.4 | 23.2 | 23.1 |
| Ca, % | 0.77 | 0.77 | 0.77 |
| P, % | 0.69 | 0.68 | 0.66 |
| STTD P, % | 0.54 | 0.53 | 0.52 |
STTD = standardized total tract digestibility.
1Diets were fed from 6.5 to approximately 10.2 kg body weight.
2Fish meal sources were: IPC 790 (The Scoular Company, Minneapolis, MN); Omega Special Select fish meal (Omega Protein, Houston, TX); Daybrook LT Prime Menhaden Fishmeal (Daybrook Fisheries, Inc., New Orleans, LA). All fish meal sources were from the 2014 catch year.
3Dried distillers grain with solubles.
4Ronozyme HiPhos 2700 (DSM Nutritional Products, Parsippany, NJ) provided 476.2 phytase units (FTU/kg) of diet with a release of 0.10% available P.
5Provided per kilogram of premix: 22 g Mn from manganese oxide; 73 g Fe from iron sulfate; 73 g Zn from zinc sulfate; 11 g Cu from copper sulfate; 198 mg I from calcium iodate; and 198 mg Se from sodium selenite.
6Provided per kilogram of premix: 3,527,360 IU vitamin A; 881,840 IU vitamin D3; 46 17,637 IU vitamin E; 3,307 mg riboflavin; 1,764 mg menadione; 11,023 mg pantothenic acid; 33,069 mg niacin; and 15.4 mg vitamin B12.