Table 1.
Ingredient composition and nutrient analysis of diets (as-fed basis) fed to developing gilts days 123 to 230
| Item | Phase 1 | Phase 2 | Phase 3 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| CTLa | RESTRb | CTL+c | CTL | RESTR | CTL+ | CTL | RESTR | CTL+ | |
| Ingredient, % | |||||||||
| Corn | 72.52 | 39.59 | 70.38 | 76.32 | 43.17 | 74.66 | 80.13 | 47.16 | 78.60 |
| Soybean Meal | 21.53 | 17.79 | 23.35 | 17.66 | 14.13 | 19.00 | 13.79 | 10.05 | 15.00 |
| Soybean Hulls | – | 40.00 | – | 40.00 | – | 40.00 | – | ||
| Beef Tallow | 3.00 | – | 3.00 | 3.00 | – | 3.00 | 3.00 | – | 3.00 |
| Dicalcium phosphate | 1.37 | 1.72 | 1.37 | 1.46 | 1.80 | 1.46 | 1.54 | 1.89 | 1.54 |
| Limestone | 0.68 | 0.68 | 0.66 | 0.66 | 0.64 | 0.64 | |||
| Sodium Chloride | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Vitamin Premixd,e | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Mineral Premixf | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| L-Lysine | – | – | 0.15 | – | – | 0.15 | – | – | 0.15 |
| Methionine | – | – | 0.05 | – | – | 0.05 | – | – | 0.05 |
| Threonine | – | – | 0.09 | – | – | 0.09 | – | – | 0.09 |
| Tryptophan | – | – | 0.03 | – | – | 0.03 | – | – | 0.03 |
| Calculated composition | |||||||||
| ME, kcal/kg | 3406 | 2705 | 3408 | 3408 | 2706 | 3410 | 3410 | 2707 | 3412 |
| Lys, g/kg | 0.7 | 0.7 | 0.86 | 0.61 | 0.61 | 0.76 | 0.51 | 0.51 | 0.66 |
| CP, % | 13.72 | 12.68 | 14.34 | 12.36 | 14.41 | 12.81 | 11.01 | 12.79 | 11.41 |
| P, % | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 | 0.60 |
| Ca, % | 0.67 | 0.71 | 0.68 | 0.67 | 0.72 | 0.68 | 0.68 | 0.73 | 0.68 |
| Lys/ME (g/Mcal) | 2.06 | 2.57 | 2.53 | 1.78 | 2.24 | 2.22 | 1.50 | 1.87 | 1.93 |
Diets consisted of a control (CTL), restricted (RESTR), or control plus (CTL+). Phases 1 and 2 are each 6 wk in duration and phase 3 is 4 wk in duration.
aControl diet (CTL) is formulated to meet 2012 NRC requirements for developing gilts.
bEnergy restricted diet (RESTR) is 20% restricted in energy with increased fiber.
cControl Plus (CTL+) contains an addition of crystalline amino acids equivalent to the SID Lys:Met of the RESTR diet.
dProvided per kilogram of diet for phases 1 and 2: 5,500 IU of Vitamin A, 550 IU of Vitamin D3, 30 IU of Vitamin E, 4.40 IU of Vitamin K, 33.00 mg of Niacin, 22.05 mg of Panothenic Acid, 11.00 mg of Riboflavin, and 33.00 μg of Vitamin B12.
eProvided per kilogram of diet for phase 3: 6,600 IU of Vitamin A, 600 IU of Vitamin D3, 66 IU of Vitamin E, 4.40 IU of Vitamin K, 33.00 mg of Niacin, 22.05 mg of Panothenic Acid, 11.00 mg of Riboflavin, and 22.05 μg of Vitamin B12, 550 mg of Choline Chloride, 1.65 mg of Folic Acid, 0.22 mg of Biotin.
fProvided per kilogram of diet: 10.50 mg of Copper Sulfate Pentahydrate, 0.26 mg of Calcium Iodate, 127.50 mg of Ferrous Sulfate, 30.00 mg of Manganese Oxide, 0.30 mg of Sodium Selenite, 127.50 mg of Zinc Sulfate, 226.03 mg of Calcium Carbonate.