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Table 1 Ingredient and chemical composition (as-fed basis) of the experimental feeds (A1, A2, B1, and B2)

From: Pigs receiving daily tailored diets using precision-feeding techniques have different threonine requirements than pigs fed in conventional phase-feeding systems

Item A1 A2 B1 B2
Ingredients g/kg
 Corn 533 538 537 538
 Soybean meal (48%) 173 173
 Wheat 150 150 100 100
 Canola meal 47 47
 Corn gluten meal + linseed meala 33 33
 Corn starch 156.3 156.3
 Fat 16 16 35 35
 Oat hulls 143 143
 Limestone 12 12 8 8
 Monocalcium phosphate 10 10 8 8
 Salt 5.50 5.50 4.80 4.80
 Anti-mould 1.00 1.00 1.00 1.00
 Choline chloride (75%) 0.20 0.20 0.20 0.20
 Lysine sulfate (70%) 6.70 6.70 2.80 2.80
l-threonine 4.50 1.20
dl-methionine 2.30 2.30 0.20 0.20
l-valine (96.5%) 2.10 2.10 0.20 0.20
 Vitamin mineral premixb 2.00 2.00 2.00 2.00
l-tryptophan 1.10 1.10 0.30 0.30
l-isoleucine 0.70 0.70 0.20 0.20
Chemical composition, %
 Dry matter 90.85 91.25 92.99 92.67
 Crude fat 6.79 6.74 7.88 8.44
 Crude protein 19.85 19.88 7.5 6.88
 Acid detergent fibre 3.87 4.02 6.32 6.51
 Neutral detergent fibre 8.80 8.63 13.58 14.12
 Total calcium 0.72 0.72 0.50 0.49
 Total phosphorus 0.64 0.64 0.40 0.40
 Digestible phosphorusc 0.35 0.35 0.27 0.27
 SIDd isoleucine 0.67 0.69 0.22 0.21
 SID leucine 1.34 1.39 0.64 0.59
 SID lysine 1.07 1.07 0.34 0.33
 SID methionine 0.53 0.53 0.16 0.14
 SID methionine + cysteine 0.72 0.72 0.24 0.20
 SID phenylalanine 0.75 0.77 0.28 0.26
 SID serine 0.80 0.80 0.30 0.26
 SID threonine 0.98 0.58 0.31 0.19
 SID valine 0.89 0.89 0.29 0.27
 Calculated net energy, MJ/kg 13.43 13.49 13.63 13.65
  1. aMix of corn gluten meal and linseed meal (Shur-Gain Canada)
  2. bSupplied per kilogram of diet (as-fed basis): vitamin A, 11,400 IU; vitamin D, 1140 IU; vitamin E, 35 IU; vitamin K, 2 mg; vitamin B12, 30 μg; niacin, 20 mg; pantothenic acid, 15 mg; pyridoxine, 2 mg; thiamine, 2 mg; copper, 122 mg; iodine, 0.3 mg; iron, 100 mg; manganese, 63 mg; selenium, 0.3 mg; and zinc, 152 mg
  3. cDigestible phosphorus, standardized ileal digestible amino acids, and metabolizable energy were estimated from the analyzed total amino acid and crude energy content in feed and from values in the INRA-AFZ tables [19]
  4. dSID, standardized ileal digestible