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Table 5 Genetic parameters for environmental variance of eggshell color in different periods in purebred laying hens

From: Estimating the purebred–crossbred genetic correlation for uniformity of eggshell color in laying hens

Period Period
1 2 3 4
1 0.067 (0.014) 0.92 (0.062) 0.68 (0.095) 0.64 (0.139)
2   0.092 (0.015) 0.89 (0.051) 0.86 (0.074)
3    0.088 (0.015) 0.94 (0.059)
4     0.084 (0.019)
  1. There were 33,395, 50,919, 52,682 and 30,655 records in periods 1, 2, 3 and 4, respectively
  2. Periods 1 = early, 2 = mid 1, 3 = mid 2 and 4 = late laying period; genetic variances on diagonal, upper off-diagonals are genetic correlations; standard errors are listed between brackets