Skip to main content

Table 5 Genetic correlations (± standard errors) between excretion traits and gastro-intestinal tract morphology

From: Improving the efficiency of feed utilization in poultry by selection. 2. Genetic parameters of excretion traits and correlations with anatomy of the gastro-intestinal tract and digestive efficiency

Trait1 CDUDM FEW/BW DEW/BW FEW/FI WE NE/NI PE/PI NE/PE
CW 0.11 ± 0.10 0.43 ± 0.17 0.17 ± 0.15 0.30 ± 0.19 0.26 ± ne -0.11 ± 0.13 0.02 ± 0.09 -0.13 ± ne
PRW 0.63 ± ne -0.44 ± 0.32 0.02 ± 0.22 0.04 ± 0.18 -0.48 ± 0.18 -0.12 ± 0.19 0.36 ± 0.18 -0.48 ± 0.18
GZW 0.43 ± 0.15 0.01 ± 0.20 -0.19 ± 0.15 -0.14 ± ne 0.13 ± 0.21 -0.20 ± 0.14 0.07 ± 0.18 -0.23 ± 0.20
DW -0.37 ± 0.08 0.44 ± 0.17 0.32 ± 0.10 -0.02 ± 0.15 -0.48 ± ne 0.42 ± 0.10 0.20 ± 0.15 0.05 ± 0.14
JW -0.66 ± ne 0.65 ± 0.10 0.50 ± 0.11 0.17 ± ne -0.38 ± 0.20 0.72 ± 0.08 0.63 ± 0.12 0.28 ± 0.14
IW -0.75 ± 0.07 0.73 ± 0.10 0.44 ± ne 0.47 ± 0.15 0.09 ± 0.16 0.70 ± 0.06 0.76 ± 0.11 0.20 ± 0.14
DL -0.03 ± ne 0.02 ± ne 0.17 ± ne -0.35 ± 0.18 -0.87 ± 0.07 0.19 ± ne -0.09 ± ne 0.54 ± ne
JL -0.06 ± ne -0.19 ± 0.19 0.09 ± 0.12 -0.25 ± 0.19 -0.90 ± 0.09 0.25 ± ne 0.17 ± 0.17 0.37 ± 0.18
IL -0.01 ± ne -0.20 ± ne 0.06 ± 0.13 -0.31 ± 0.19 -0.77 ± 0.21 0.08 ± ne 0.07 ± ne 0.23 ± ne
DD -0.35 ± 0.08 0.43 ± 0.16 0.10 ± 0.12 0.48 ± 0.15 0.54 ± 0.22 0.28 ± 0.10 0.33 ± 0.15 -0.10 ± 0.16
JD -0.41 ± 0.08 0.59 ± 0.15 0.25 ± 0.12 0.42 ± 0.14 0.45 ± 0.20 0.32 ± ne 0.39 ± 0.14 -0.14 ± 0.12
ID -0.52 ± ne 0.68 ± ne 0.27 ± 0.13 0.72 ± 0.13 0.55 ± ne 0.50 ± 0.10 0.57 ± 0.13 -0.14 ± 0.14
  1. 1CW, PRW, GZW, LW, DW, JW, IW, relative weights of crop, proventriculus, gizzard, liver, duodenum, jejunum, and ileum; DL, JL, IL, relative lengths of duodenum, jejunum, and ileum; DD, JD, ID, density of duodenum, jejunum, and ileum; CDUDM, coefficient of digestive use of dry matter; FEW/BW and DEW/BW, fresh and dry excreta weight relative to body weight at 23 d; FEW/FI, fresh excreta weight relative to feed intake; WE, water content of excreta; NE/NI, PE/PI, ratio of nitrogen and phosphorus excretion to intake; NE/PE, ratio of nitrogen to phosphorus excretion.
  2. 2 ne: not estimated