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Table 6 Coefficients of variation for traits measured in France and Taiwan, for each line and each genotype at the naked neck locus

From: Performance comparison of dwarf laying hens segregating for the naked neck gene in temperate and subtropical environments

  Control line Selection line
Traits NA*N/NA*N 1 NA*NA/NA*N NA*NA/NA*NA NA*N/NA*N NA*NA/NA*N NA*NA/NA*NA
  France Taiwan France Taiwan France Taiwan France Taiwan France Taiwan France Taiwan
Body weight at 16 weeks 11.7 14.1 8.19 14.9 12.8 6.74 9.48 13.3 12.0 12.1 8.94 11.5
Age at first egg 12.8 8.16 6.4 10.5 6.8 7.33 5.9 9.3 15.4 7.34 5.8 9.02
Clutch length (Trans.) 33.2 28.8 29.6 32.2 31.7 36.9 14.7 28.2 20.7 31.9 17.7 29.1
Egg number at 44 weeks (Trans.) 39.1 41.8 28.9 42.2 30.0 34.4 8.92 29.5 18.9 36.4 21.1 25.2
Laying rate 31.4 30.8 23.1 30.3 22.1 22.7 5.4 20.0 12.3 27.2 16.4 16.9
Adult body weight 14.7 11.5 13.6 13.7 17.2 8.51 8.39 12.5 12.6 11.9 12.5 13.4
Egg weight 9.79 5.3 8.17 8.82 8.64 7.39 7.45 6.66 8.79 8.10 6.44 6.84
  1. The largest relative changes between environments are indicated in bold characters.
  2. 1 NA*N/NA*N: normally feathered; NA*NA/NA*N: heterozygous naked neck; NA*NA/NA*NA: homozygous naked neck