Table 10.
Comparison of actual vs. predicted digestible energy (DE) of lipid sources fed to 13 kg and 50 kg pigs (adapted from [141]).
| Lipid Source | Actual DE, Mcal/kg | Powles et al. [129] predicted DE 1, Mcal/kg | Kellner and Patience [141] Predicted DE 2,3, Mcal/kg |
|---|---|---|---|
| 13 kg BW | |||
| Animal–vegetable blend | 8.81 | 8.40 | 8.34 |
| Canola oil | 8.59 | 8.82 | 8.56 |
| Choice white grease source A | 8.32 | 8.45 | 8.69 |
| Choice white grease source B | 8.67 | 8.46 | 8.79 |
| Coconut oil | 7.65 | 7.08 | 7.64 |
| Corn oil source A | 6.90 | 8.66 | 7.14 |
| Corn oil source B | 8.52 | 8.80 | 8.28 |
| Fish oil | 8.69 | 8.37 | 8.78 |
| Flax oil | 8.06 | 8.66 | 8.03 |
| Palm oil | 8.81 | 8.10 | 8.62 |
| Poultry fat | 8.67 | 8.57 | 8.38 |
| Soybean oil source A | 9.04 | 8.81 | 8.95 |
| Soybean oil source B | 8.99 | 8.81 | 8.97 |
| Tallow | 8.33 | 8.06 | 8.76 |
| 50 kg | |||
| Animal–vegetable blend | 7.51 | 8.40 | 7.69 |
| Canola oil | 9.53 | 8.82 | 9.52 |
| Choice white grease source A | 9.31 | 8.45 | 8.75 |
| Choice white grease source B | 8.72 | 8.46 | 8.77 |
| Coconut oil | 7.97 | 7.08 | 8.34 |
| Corn oil source A | 7.43 | 8.66 | 7.54 |
| Corn oil source B | 8.55 | 8.80 | 8.50 |
| Fish oil | 7.77 | 8.37 | 7.85 |
| Flax oil | 9.43 | 8.66 | 9.54 |
| Palm oil | 8.50 | 8.10 | 8.76 |
| Poultry fat | 8.14 | 8.57 | 7.93 |
| Soybean oil source A | 9.05 | 8.81 | 8.66 |
| Soybean oil source B | 8.18 | 8.81 | 8.71 |
| Tallow | 8.22 | 8.06 | 7.92 |
1 DE, kcal/kg = [36.898 − (0.005 × FFA, %) − 7.330 − 0.906 × unsaturated fatty acid:saturated fatty acid ratio]/0.004184. 2 For 13 kg pigs: DE, Mcal/kg = 9.363 − (0.097 × FFA, %) − (0.016 × omega-6:omega-3 fatty acid ratio) − (1.240 × arachidic acid, %) − (5.054 × insoluble impurities, %) + (0.014 × palmitic acid, %). 3 For 50 kg pigs: DE, Mcal/kg = 8.357 + (0.189 × unsaturated fatty acid: saturated fatty acid ratio) − (0.195 × FFA, %) − (6.768 × behenic acid, %) + (0.024 × PUFA, %).