Table 1 Variance components of gastrointestinal nematode burden in Dutch Holstein-Friesian dairy cattle.

Random effect

LEPG

LLPG

Bun.

C.onc.

C.pun.

Hae.

Oes.

Ost.

Tric.

TOT

Animal (${\sigma }_A^2$/${\sigma }_P^2$) (Stand.error)

0.21 (0.05)

0.00 (0.02)

0.07 (0.04)

0.05 (0.03)

0.25 (0.05)

0.03 (0.03)

0.06 (0.03)

0.00 (0.02)

0.12 (0.04)

Herd (${\sigma }_H^2$/${\sigma }_P^2$) (Stand.error)

0.21 (0.02)

0.12 (0.03)

0.05 (0.02)

0.07 (0.03)

0.34 (0.02)

0.28 (0.03)

0.05 (0.02)

0.10 (0.02)

0.12 (0.02)

${\sigma }_P^2$

0.212

0.000

0.103

0.026

0.137

0.017

0.105

0.015

0.226