Table 1. Feed components and proximate composition of the experimental diets on an as-fed basis.
| D1 | D2 | D3 | D4 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Ingredients | 1st | 2nd | 1st | 2nd | 1st | 2nd | 1st | 2nd | |
| Extruded linseed | % | 0.00 | 0.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 | 5.00 |
| Barley meal | % | 85.50 | 91.00 | 80.50 | 86.60 | 80.30 | 86.40 | 80.50 | 86.60 |
| Soya bean meal | % | 11.00 | 5.50 | 11.00 | 5.00 | 11.00 | 5.00 | 11.00 | 5.00 |
| L-Lysine | % | 0.31 | 0.29 | 0.30 | 0.29 | 0.30 | 0.29 | 0.30 | 0.29 |
| DL-Methionine | % | 0.06 | 0.04 | 0.06 | 0.03 | 0.06 | 0.03 | 0.06 | 0.03 |
| L-Threonine | % | 0.05 | 0.04 | 0.05 | 0.03 | 0.05 | 0.03 | 0.05 | 0.03 |
| Calcium carbonate | % | 1.18 | 1.13 | 1.19 | 1.15 | 0.89 | 0.85 | 1.19 | 1.15 |
| Dicalcium phosphate | % | 1.00 | 1.10 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Salt (NaCl) | % | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 | 0.40 |
| Vitamin/mineral pre-mix1 | % | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Vitamin E and Selenium pre-mix2 | % | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.50 | 0.00 | 0.00 |
| Plant extracts (Grape-skin + oregano) | g per kg of feed | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 3.00+2.00 | 3.00+2.00 |
| Proximate composition | |||||||||
| Digestible energy | kcal/kg | 3189 | 3168 | 3255 | 3235 | 3248 | 3228 | 3255 | 3235 |
| Crude protein | % | 14.89 | 11.31 | 15.39 | 11.73 | 15.37 | 11.71 | 15.39 | 11.73 |
| Crude fat | % | 1.75 | 1.74 | 3.58 | 3.58 | 3.58 | 3.58 | 3.58 | 3.58 |
| Crude fiber | % | 4.33 | 4.2 | 4.62 | 4.48 | 4.61 | 4.47 | 4.62 | 4.48 |
| Ca | % | 0.80 | 0.79 | 0.82 | 0.79 | 0.82 | 0.79 | 0.82 | 0.79 |
| P | % | 0.54 | 0.54 | 0.55 | 0.53 | 0.55 | 0.53 | 0.55 | 0.53 |
| Fatty acid composition | % (of total fatty acids) | ||||||||
| C14:0 | % | 0.47 | 0.39 | 0.25 | 0.21 | 0.25 | 0.22 | 0.26 | 0.22 |
| C16:0 | % | 29.01 | 24.25 | 18.13 | 15.20 | 17.78 | 15.59 | 18.80 | 15.31 |
| C16:1 | % | 0.49 | 0.34 | 0.17 | 0.15 | 0.17 | 0.17 | 0.02 | 0.15 |
| C18:0 | % | 2.03 | 1.51 | 4.00 | 3.18 | 3.88 | 3.34 | 4.16 | 3.23 |
| C18:1 n-9 | % | 14.92 | 13.50 | 20.60 | 18.12 | 20.24 | 18.45 | 21.29 | 18.26 |
| C18:2 n-6 | % | 47.55 | 53.67 | 33.50 | 34.69 | 33.91 | 34.09 | 32.52 | 34.47 |
| C18:3 n-3 | % | 4.77 | 5.70 | 22.83 | 28.02 | 23.25 | 27.73 | 22.38 | 27.95 |
| C20:1 | % | 0.74 | 0.64 | 0.53 | 0.41 | 0.52 | 0.42 | 0.57 | 0.41 |
D1 = standard diet for growing-finishing pigs; D2 = standard diet supplemented with linseed (source of n-3 PUFA); D3 = standard diet supplemented with linseed, vitamin E and selenium (250 and 0.31 mg per kg of feed respectively; D4 = standard diet supplemented with linseed and plant extracts from grape-skin (3 g per kg of feed) and oregano (2 g per kg of feed) as polyphenols source (total polyphenols added 37.6 mg per kg of feed).
1st = feed administered from an average weight of 79.9 kg to 113.4 kg; 2nd = feed administered from an average weight of 113.4 kg to slaughter.
1Provided the following nutrients (per kg diet as-fed): Vitamin A 15,000 IU; Vitamin D3 2,000 IU; Vitamin E alpha-tocopheryl-acetate), 50 mg; Vitamin K, 2.5 mg; Vitamin B1, 2 mg; Vitamin B2 5 mg; Vitamin B5, 15 mg; Vitamin B6, 4 mg; Vitamin B12, 0.036 mg; Niacin, 25 mg; Folic acid, 1 mg; Biotin, 0.15 mg; Choline, 346 mg; Cu, 15 mg; Fe, 150 mg; Mn, 25 mg; Co, 0.4 mg; I, 1.5 mg; Zn, 100 mg; Se) 0.1 mg.
2Provided the following nutrients (per kg diet as-fed): Vitamin E (alpha-tocopheryl-acetate), 200 mg and Se, 0.21 mg.