Skip to main content

Table 5 Effect of defatted diatom microalgal biomass on egg quality at the 4 th and 8 th wk

From: Effect of dietary defatted diatom biomass on egg production and quality of laying hens

Item Control 7.5% Algae 7.5% Algae 15% Algae
-SBM -SBM/Corn -SBM/Corn
At the end of the 4th wk     
Egg weight, g 60.00 ± 3.93 59.49 ± 5.25 59.28 ± 3.79 60.69 ± 3.61
Haugh unit 86.6 ± 4.0 84.6 ± 6.4 85.6 ± 7.1 88.6 ± 5.7
Yolk weight, g 15.79 ± 1.42 16.35 ± 1.42 15.77 ± 1.22 15.92 ± 0.82
Egg shell weight, g 5.29 ± 0.57 5.70 ± 2.11 5.37 ± 0.39 5.60 ± 0.54
Albumen weight, g 38.81 ± 2.96 38.21 ± 3.89 38.13 ± 2.83 39.00 ± 3.24
Egg shell thickness, mm 0.34 ± 0.03 0.34 ± 0.03 0.36 ± 0.03 0.36 ± 0.03
At the end of the 8th wk     
Egg weight, g 59.99 ± 2.51 58.09 ± 1.49 59.25 ± 1.75 60.05 ± 1.26
Haugh unit 82.6 ± 3.1 82.0 ± 3.3 81.6 ± 2.0 84.6 ± 1.4
Yolk weight, g 16.11 ± 0.71 16.25 ± 0.55 16.08 ± 0.48 15.90 ± 0.32
Egg shell weight, g 5.47 ± 0.26 5.28 ± 0.25 5.38 ± 0.25 5.49 ± 0.35
Albumen weight, g 38.44 ± 2.17ab 36.78 ± 1.40a 37.87 ± 1.45ab 39.24 ± 1.15b
Albumen height, mm 6.92 ± 0.43ab 6.73 ± 0.47ab 6.71 ± 0.24a 7.23 ± 0.23b
Egg shell thickness, mm 0.35 ± 0.02 0.35 ± 0.01 0.34 ± 0.03 0.35 ± 0.02
Egg specific gravity 1.082 ± 0.004 1.080 ± 0.001 1.080 ± 0.005 1.080 ± 0.002
Egg shell strength, N 34.4 ± 2.2 34.4 ± 2.0 32.6 ± 4.6 35. 3 ± 3.6
Yolk cholesterol, mg/g 14.20 ± 0.66 14.06 ± 0.34 13.50 ± 0.66 13.69 ± 0.71
  1. a,bMeans in the same row without a letter in common are different (P < 0.05).