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Table 4 The eggshell and egg qualityof laying hens. Data are presented as means (SD)a

From: Effects of dietary phosphorous supplementation on laying performance, egg quality, bone health and immune responses of laying hens challenged with Escherichia coli lipopolysaccharide

NPP,% LPS Shell weight/ egg weight, % Eggshell strength, kg/cm2 Yolk color Ca of eggshell, % P of eggshell,% Eggshell color Eggshell thickness, mm Haugh units Albumen height, mm
0.12 11.93 3.81 6.40b 35.13 0.199 63.43c 0.322 77.82 6.17
+ 10.63 3.56 5.73d 35.24 0.205 64.44bc 0.342 82.57 6.84
0.40 11.54 3.88 6.77c 34.45 0.208 65.40b 0.329 77.82 6.23
+ 11.54 4.30 7.70b 35.08 0.201 63.38c 0.332 85.35 7.27
SEM   0.34 0.08 0.12 0.14 0.003 0.30 0.002 0.72 0.10
Main effect means
 NPP
  0.12   11.28 3.69 6.07c 35.19 0.202 63.92 0.332 80.24 6.51
  0.40   11.54 4.08 7.23b 34.77 0.204 64.41 0.330 81.52 6.74
 LPS
  –   11.74 3.85 6.58 34.79 0.204 64.41 0.326c 77.82c 6.20c
  +   11.08 3.93 6.72 35.17 0.203 63.91 0.337b 83.94b 7.05b
P-value
 NPP   0.070 0.740 <0.001 0.261 0.808 0.445 0.695 0.294 0.206
 LPS   0.187 0.082 0.490 0.381 0.935 0.401 0.016 <0.001 <0.001
 NPP × LPS   0.151 0.586 <0.001 0.490 0.349 0.012 0.089 0.293 0.339
  1. aMeans were calculated on n = 5 replicates (6 eggs per replicate) per treatment
  2. b-dWithin comparisons, means in a column with no common superscripts differ significantly (P < 0.05)