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Table 3 Estimates (± standard errors) of heritability (on diagonal) and genetic correlations (above diagonal) for GIT traits

From: Improving the efficiency of feed utilization in poultry by selection. 1. Genetic parameters of anatomy of the gastro-intestinal tract and digestive efficiency

Trait1 CW PRW GZW LW DW JW IW DL JL IL DD JD ID
CW 0.21 ± 0.06 0.53 ± 0.14 0.09 ± 0.06 0.75 ± 0.13 0.18 ± 0.08 -0.14 ± 0.13 0.04 ± 0.10 0.23 ± 0.19 -0.13 ± ne2 -0.10 ± 0.23 -0.05 ± 0.20 0.11 ± 0.19 0.22 ± 0.18
PRW   0.09 ± 0.06 0.81 ± 0.15 -0.55 ± ne 0.54 ± 0.20 -0.28 ± 0.40 0.17 ± 0.19 0.51 ± 0.43 0.52 ± 0.40 0.65 ± 0.29 -0.18 ± 0.26 -0.56 ± 0.20 -0.32 ± 0.27
GZW    0.53 ± 0.11 -0.51 ± 0.30 0.13 ± 0.16 -0.25 ± 0.16 -0.03 ± 0.14 0.16 ± ne 0.28 ± 0.15 0.22 ± 0.17 -0.37 ± 0.12 -0.56 ± 0.13 -0.33 ± 0.11
LW     0.05 ± 0.02 0.38 ± 0.35 0.66 ± 0.20 0.65 ± 0.25 0.70 ± 0.09 0.75 ± 0.08 0.24 ± 0.27 -0.47 ± 0.21 -0.37 ± 0.20 -0.03 ± 0.21
DW      0.33 ± 0.06 0.62 ± 0.08 0.70 ± 0.06 0.67 ± ne 0.39 ± 0.14 0.52 ± 0.11 0.38 ± ne 0.17 ± 0.13 0.20 ± 0.13
JW       0.44 ± 0.06 0.88 ± 0.03 0.40 ± 0.12 0.21 ± 0.15 0.15 ± ne 0.21 ± 0.13 0.60 ± 0.09 0.60 ± ne
IW        0.37 ± 0.05 0.33 ± ne 0.16 ± 0.13 0.21 ± ne 0.41 ± 0.14 0.54 ± 0.11 0.67 ± 0.08
DL         0.46 ± 0.06 0.89 ± ne 0.93 ± ne -0.48 ± ne -0.34 ± 0.13 -0.40 ± 0.12
JL          0.32 ± 0.06 0.90 ± 0.04 -0.71 ± 0.09 -0.64 ± 0.09 -0.61 ± 0.09
IL           0.28 ± 0.06 -0.52 ± 0.12 -0.56 ± ne -0.57 ± 0.10
DD            0.39 ± 0.06 0.78 ± 0.05 0.79 ± 0.06
JD             0.50 ± 0.07 0.93 ± 0.02
ID              0.44 ± 0.06
  1. 1CW, PRW, GZW, LW, DW, JW, IW, weights of crop, proventriculus, gizzard, liver, duodenum, jejunum, and ileum in relation to BW; DL, JL, IL, lengths of duodenum, jejunum and ileum in relation to BW; DD, JD, ID, density of duodenum, jejunum and ileum. 2 ne: not estimated.