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Table 2 Overview of the fixed and random effects included in the four models

From: Genetic parameters and genomic breeding values for digital dermatitis in Holstein Friesian dairy cattle: host susceptibility, infectivity and the basic reproduction ratio

Model

Random effects

1

Genetic susceptibility focal individual

–

Farm*period

2

Genetic susceptibility focal individual

Genetic infectivity herd mates

Farm*period

3

Genetic susceptibility focal individual

–

–

4

Genetic susceptibility focal individual

Genetic infectivity herd mates

–

  1. All models contained fixed effects for farm, period, parity, and months in milk; and a non-genetic random animal effect for the susceptible animal
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Genetics Selection Evolution

ISSN: 1297-9686