Table 4. b).

Relationships between bird digestibility parameters and chemical and physical parameters of wheat

Parameter	Correlation coefficient
	DM retention	Ileal DM digestibility	Ileal starch digestibility	Ileal CP digestibility
Specific weight	−0.017	−0.001	−0.100	0.167
Thousand grain weight	−0.052	0.249	−0.238	0.357
In vitro viscosity	−0.181	−0.124	−0.529	0.387
Crude protein	−0.269	−0.209	−0.298	0.259
Neutral detergent fibre	−0.151	−0.165	−0.311	0.279
Starch	0.270	0.145	0.594	−0.513
Total non starch polysaccharides	−0.208	−0.178	−0.405	0.361
Soluble non starch polysaccharides	−0.156	−0.157	−0.206	0.128
Lysine	−0.225	−0.074	0.098	−0.089
Threonine	0.176	−0.426	−0.425	−0.014
Gross energy	−0.325	−0.136	−0.211	0.282
Amylose	−0.035	0.089	0.296	−0.348
Hardness	−0.088	−0.160	−0.396	0.337
RSD rate constant	0.021	−0.163	−0.506	0.389
Protein profile - Band 1	−0.126	−0.197	0.067	−0.217
Protein profile - Band 2	−0.320	−0.189	−0.014	−0.102
Protein profile - Band 3	0.050	0.139	0.385	−0.325
Protein profile - Band 4	−0.059	−0.187	−0.496	0.420
Protein profile - Band 5	0.020	0.217	0.130	0.003

Correlation values ≥0.173, 0.242, 0.318 are significant (p<0.05, 0.01 and 0.001 respectively). Significant correlations are highlighted in bold.