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Table 3 Effect of defatted diatom microalgal biomass on body weight, feed intake, egg production rate, egg mass and FCR

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
Body weight, kg     
Wk 0 1.53 ± 0.16 1.60 ± 0.19 1.58 ± 0.18 1.58 ± 0.20
Wk 8 1.47 ± 0.08 1.58 ± 0.08 1.53 ± 0.11 1.51 ± 0.10
Daily feed intake, g/hen  
Wk 1-4 100.1 ± 4.9 96.9 ± 3.9 95.9 ± 6.7 92.6 ± 11.2
Wk 5-8 96.0 ± 8.3a 96.0 ± 3.6a 95.0 ± 6.9a 85.5 ± 4.5b
Wk 1-8 98.1 ± 6.0a 96.4 ± 3.4ab 95.4 ± 5.9ab 89.1 ± 5.9b
Egg production rate, %1    
Wk 1-4 86.7 ± 3.4 83.7 ± 6.3 84.7 ± 6.6 75.1 ± 16.4
Wk 5-8 81.3 ± 11.2a 85.6 ± 5.0a 83.9 ± 8.7a 69.0 ± 6.6b
Wk 1-8 84.0 ± 7.1a 84.6 ± 4.7a 84.3 ± 7.1a 72.1 ± 10.1b
Egg mass, g/hen/d     
Wk 1-4 52.02 ± 2.02 49.79 ± 3.68 50.21 ± 3.23 45.63 ± 8.65
Wk 5-8 48.77 ± 5.02a 49.73 ± 2.23a 49.71 ± 4.34a 41.43 ± 4.01b
Wk 1-8 50.40 ± 3.87a 49.74 ± 2.93a 49.96 ± 3.36a 43.53 ± 5.71b
FCR2     
Wk 1-4 1.92 ± 0.03 1.95 ± 0.05 1.91 ± 0.06 2.02 ± 0.11
Wk 5-8 1.97 ± 0.08a 1.93 ± 0.04a 1.92 ± 0.05a 2.06 ± 0.05b
Wk 1-8 1.94 ± 0.06a 1.94 ± 0.04a 1.92 ± 0.05a 2.05 ± 0.09b
  1. a,bMeans in the same row without a letter in common are different (P < 0.05).
  2. 1Egg production = 100 [number of eggs laid ÷ (number of hens x number of days)].
  3. 2FCR = feed intake (g) / egg mass (g).