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. 2016 Aug 13;2(4):303–311. doi: 10.1016/j.aninu.2016.08.001

Table 9.

Correlations between concentrations of free amino acids in the portal circulation and feed conversion ratios of broilers offered wheat-based diets without and with sodium metabisulphite plus protease from 7 to 28 days post–hatch.

Essential amino acids Correlation coefficient (r) Significance (P-value) Non-essential amino acids Correlation coefficient (r) Significance (P-value)
Arginine −0.563 0.072 Alanine −0.157 0.644
Histidine −0.568 0.068 Aspartic acid −0.019 0.956
Isoleucine −0.643 0.033 Asparagine −0.606 0.048
Leucine −0.621 0.042 Cystine −0.329 0.322
Lysine −0.575 0.064 Glutamic acid +0.295 0.379
Methionine −0.660 0.027 Glutamine −0.501 0.116
Phenylalanine −0.683 0.021 Glycine −0.692 0.018
Threonine −0.773 0.005 Proline −0.802 0.003
Tryptophan −0.247 0.464 Serine −0.499 0.118
Valine −0.657 0.028 Tyrosine +0.085 0.804