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Table 5 Egg production performance and egg quality of laying hen for a period of 14 weeks (30–44 weeks of age)

From: Use of potato as carbohydrate source in poultry ration

Parameter Potato content (%) Level of significance
0 10 20 30
Feed consumption (g/b/d) 105.14 105.42 104.95 105.07 0.58NS
Egg mass production (g/h/d) 48.10 46.57 43.31 46.08 0.55NS
Feed conversion ratio 2.19 2.27 2.45 2.28 0.54NS
Feed cost (Tk/kg egg) produced 33.46 33.10 32.84 32.46 <0.0001**
Feed cost (hen/d) 3.52 3.49 3.45 3.41 <0.0001**
Egg production (%) 57.07 53.81 51.99 52.90 0.45NS
Egg weight (g/egg) 40.14 39.29 40.06 39.02 0.81NS
Survivability (%) 100 100 100 100 0.00NS
Shell thickness (mm) 0.38 0.35 0.38 0.37 0.33NS
Shape index 78.32 79.03 78.23 79.09 0.22NS
Shell weight (g/egg) 4.18 4.29 3.96 4.22 0.41NS
Shell (%) 10.35 10.67 10.26 11.22 0.12NS
Egg breaking strength 1500.90 1504.77 1500.95 1506.01 0.11NS
Albumen index 0.10 0.10 0.11 0.09 0.18NS
Yolk index 0.46 0.48 0.45 0.46 0.50NS
Haugh unit 89.73 90.67 88.16 88.70 0.28NS
Yolk colour score 8.17 9.67 9.00 8.50 0.34NS
  1. NS non-significant, g gram, b bird, d day, h hen, mm millimetre
  2. ** P < 0.01, significant at 1% level