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Table 3 Performance of 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 Egg production rate,% Egg weight, g Feed/egg ratio Feed intake, g Hen-day egg production, g/d Broken egg rate, % Mortality rate,%
0.12 90.22 59.04 1.894 100.80 53.26 0.30 0.00
+ 62.96 56.48 2.352 83.22 35.55 2.35 1.33
0.40 90.22 59.29 1.858 99.32 53.50 0.32 0.00
+ 66.47 57.05 2.296 86.88 37.96 1.55 1.33
SEM   3.09 0.42 0.06 2.13 2.01 0.31 0.46
Main effect means
 NPP
  0.12   76.59 57.76 2.12 92.01 44.41 1.33 0.67
  0.40   78.35 58.17 2.08 93.10 45.73 0.94 0.67
 LPS
  –   90.22b 59.17b 1.88c 100.06b 53.38b 0.31c 0.00
  +   64.72c 56.77c 2.33b 85.05c 36.75c 1.95b 1.33
P-value
 NPP   0.616 0.562 0.440 0.682 0.328 0.828 1.000
 LPS   <0.001 0.003 <0.001 <0.001 <0.001 0.001 0.176
 NPP × LPS   0.481 0.813 0.855 0.340 0.420 0.811 1.000
  1. aMeans were calculated on n = 5 replicates (15 laying hens per replicate) per treatment
  2. b-cWithin comparisons, means in a column with no common superscripts differ significantly (P < 0.05)