Table 4.
Growth performance and apparent total tract digestibility of energy and fat in pigs fed soybean oil with differing peroxidation levels, experiment 1
| Processed soybean oil1,2 | Statistics | |||||
|---|---|---|---|---|---|---|
| Parameter | 22.5 | 45 | 90 | 180 | SEM | P-value |
| ADG, kg | 0.478a | 0.465a | 0.406b | 0.455a | 0.016 | 0.01 |
| ADFI, kg | 0.629a | 0.609a | 0.548b | 0.615a | 0.021 | 0.04 |
| G:F | 0.762 | 0.764 | 0.745 | 0.739 | 0.012 | 0.37 |
| ATTD GE, %3 | 88.48 | 87.61 | 87.54 | 87.50 | 0.41 | 0.28 |
| ATTD AEE, %3 | 85.71 | 84.28 | 84.97 | 87.38 | 0.55 | 0.21 |
1Data are least-square mean of 14 observations for 22.5 and 15 each for 45, 90, and 180. Processing temperatures: 22.5 = fresh oil; 45 = oil heated for12 d at 45 °C with constant compressed air flow rate at 15 L/min; 90 = oil heated for 72 h at 90 °C with constant compressed air flow rate at 15 L/min; 180 = oil heated for 6 h at 180 °C with constant compressed air flow rate at 15 L/min. Performance data were collected over 21 d with an initial BW of 7.1 ± 0.9 kg (P = 0.54) and a final BW of 16.6 ± 1.8 kg (P = 0.10).
2Superscripts reflect peroxidized soybean oil treatment differences (ab, P < 0.05).
3ATTD, apparent total tract digestibility; AEE, acid hydrolyzed ether extract.