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Table 1 Estimated additive genetic variance (σ 2 a ), generation variance (σ 2 gen ), residual variance (σ 2 e ), heritability (h2) and standard error (in parenthesis) for trait feather pecking bouts using a Poisson model and a linear model

From: Genetic parameters and signatures of selection in two divergent laying hen lines selected for feather pecking behaviour

Model

Line

σ 2 a

σ 2 gen

σ 2 e

h2

Poisson

HFP

2.760 (0.24)

0.27 (0.23)

LFP

1.430 (0.15)

0.35 (0.24)

Linear

HFP

0.090 (0.04)

0.08 (0.05)

0.55 (0.04)

0.15 (0.07)

LFP

0.001 (0.01)

0.03 (0.02)

0.26 (0.02)

0.01 (0.03)