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Table 2 Analyzed and calculated concentration of nitrogen, total and free amino acids in high crude protein (HCP) and low crude protein (LCP) dietsa (g/kg, as-fed basis)

From: Effect of dietary near ideal amino acid profile on heat production of lactating sows exposed to thermal neutral and heat stress conditions

Item  HCP LCP
Analyzed Calculatedb Analyzed Calculatedb
Total
 Dry matter 887.6 889.5
 Nitrogen 30.0 30.8 22.0 22.4
 Arginine 12.3 12.6 7.5 7.8
 Histidine 4.9 5.3 3.9 4.3
 Isoleucine 8.5 8.1 6.1 6.0
 Leucine 16.5 16.7 11.4 11.9
 Lysine 11.1 10.4 10.8 10.1
 Methionine 2.7 3.1 2.7 3.3
 Methionine + cysteine 5.6 6.3 4.8 5.7
 Phenylalanine 9.8 9.6 7.5 7.6
 Phenylalanine + tyrosine 16.0 15.9 11.9 12.0
 Threonine 7.2 7.3 6.4 6.8
 Tryptophan 2.5 2.3 1.8 1.9
 Valine 9.4 9.0 8.9 8.9
Free amino acids
 Arginine 0.3 0.1
 Histidine 0.7 0.7
 Isoleucine 0.1 0.8 0.8
 Leucine 0.1 0.1
 Lysine 0.2 3.6 3.7
 Methioninec 0.7 1.1
 Methionine + cysteine 0.7 1.1
 Phenylalanine 1.2 1.3
 Phenylalanine + tyrosine 0.1 1.2 1.3
 Threonine 0.2 2.0 2.0
 Tryptophand 0.5
 Valine 2.7 2.9
  1. aAnalyzed values represents average across 3 blocks (feed mixes)
  2. bCalculated values for the total amino acids are based on the amino acids concentration in feed ingredients [16], and calculated values for the free amino acids correspond to the dietary inclusion rate in crystalline form
  3. cAddition of DL-Methionine was omitted in one of the 3 blocks, thus reducing the overall free methionine concentration across all 3 blocks. The average free methionine concentration between blocks 1 and 3 was 0.11 and was zero in block 2. Therefore, across blocks 1, 2 and 3, average free Met was 0.07
  4. dAnalysis of free tryptophan was not performed