Table 3.
Ingredient composition of experimental diets, lactation
| Item | Diet | ||||
|---|---|---|---|---|---|
| High-protein canola meal | Conventional canola meal | ||||
| Control | 50% | 100% | 50% | 100% | |
| Ground corn | 66.65 | 65.68 | 64.42 | 62.25 | 56.48 |
| High-protein canola meal | – | 14.83 | 29.90 | – | – |
| Conventional canola meal | – | – | – | 16.90 | 35.10 |
| Soybean meal, 48% CP | 27.00 | 13.50 | – | 13.50 | – |
| Soybean oil | 3.00 | 2.70 | 2.43 | 4.10 | 5.30 |
| Limestone | 0.77 | 0.72 | 0.67 | 0.66 | 0.55 |
| Dicalcium phosphate | 1.70 | 1.60 | 1.50 | 1.62 | 1.53 |
| l-Lys HCl, 78% Lys | 0.08 | 0.17 | 0.25 | 0.17 | 0.24 |
| l-Thr | – | – | 0.03 | – | – |
| Salt | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 |
| Choline | 0.10 | 0.10 | 0.10 | 0.10 | 0.10 |
| Vitamin–mineral premix1 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 |
| Total | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
| Calculated composition | |||||
| ME, kcal/kg3 | 3,404 | 3,404 | 3,404 | 3,404 | 3,404 |
| NE, kcal/kg3 | 2,505 | 2,462 | 2,417 | 2,420 | 2,323 |
| CP, % | 18.85 | 18.77 | 18.77 | 18.66 | 18.88 |
| ADF, % | 2.95 | 3.78 | 4.61 | 4.73 | 6.65 |
| NDF, % | 7.89 | 9.13 | 10.38 | 9.77 | 11.77 |
| Ca, % | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 |
| P, % | 0.66 | 0.73 | 0.81 | 0.73 | 0.80 |
| Digestible P,3 % | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 |
| Amino acids,4 % | |||||
| Arg | 1.12 | 0.99 | 0.87 | 0.99 | 0.88 |
| His | 0.44 | 0.43 | 0.41 | 0.42 | 0.41 |
| Ile | 0.67 | 0.59 | 0.52 | 0.60 | 0.53 |
| Leu | 1.45 | 1.34 | 1.23 | 1.33 | 1.23 |
| Lys | 0.87 | 0.87 | 0.87 | 0.87 | 0.87 |
| Met | 0.26 | 0.29 | 0.31 | 0.28 | 0.30 |
| Met + Cys | 0.53 | 0.62 | 0.70 | 0.60 | 0.67 |
| Phe | 0.81 | 0.72 | 0.63 | 0.71 | 0.62 |
| Thr | 0.58 | 0.55 | 0.55 | 0.56 | 0.55 |
| Trp | 0.19 | 0.19 | 0.20 | 0.19 | 0.19 |
| Val | 0.75 | 0.72 | 0.69 | 0.71 | 0.69 |
1Provided the following quantities of vitamins per kilogram of complete diet: vitamin A as retinyl acetate, 11,136 IU; vitamin D3 as cholecalciferol, 2,208 IU; vitamin E as DL-alpha tocopheryl acetate, 66 IU; vitamin K as menadione dimethylprimidinol bisulfite, 1.42 mg; thiamin as thiamine mononitrate, 0.24 mg; riboflavin, 6.59 mg; pyridoxine as pyridoxine hydrochloride, 0.24 mg; vitamin B12, 0.03 mg; D-pantothenic acid as D-calcium pantothenate, 23.5 mg; niacin, 44.1 mg; folic acid, 1.59 mg; biotin, 0.44 mg; Cu, 20 mg as copper sulfate and copper chloride; Fe, 126 mg as ferrous sulfate; I, 1.26 mg as ethylenediamine dihydriodide; Mn, 60.2 mg as manganese sulfate; Se, 0.3 mg as sodium selenite and selenium yeast; and Zn, 125.1 mg as zinc sulfate.
2Values for ME and NE were calculated based on ME and DE in each energy contributing ingredient. Values for ME and NE in corn and soybean oil were based on NRC (2012), and values for ME and NE in soybean meal, high-protein canola meal, and conventional canola meal were from Berrocoso al. (2015).
3Standardized total tract digestible (STTD) P. Values were calculated based on standardized total tract digestibility of P in corn and dicalcium phosphate published by NRC (2012), and values for standardized total tract digestibility of P in soybean meal, high-protein canola meal, and conventional canola meal were from She et al. (2017).
4Amino acids are indicated as standardized ileal digestible AA. Values were calculated based on values for standardized ileal digestibility of AA in corn and crystalline AA published by NRC (2012), and standardized ileal digestibility values for AA in soybean meal, high-protein canola meal, and conventional canola meal were from Berrocoso et al. (2015).