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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)