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Table 1 Overview of studies on optimal age for group housing of dairy calves

From: The effect of age when group housed and other management factors on playing and non-nutritive sucking behaviour in dairy calves: a cross sectional observational study

Reference

Calves’ ages when tested

Age when group housed (A)

Age when group housed (B)

Abdelfattah et al. [14]

3 days to 7 weeks

2 to 3 days

7 to 14 days

Duve and Jensen [12]

5 weeks

1 day

3 weeks

Jensen and Larsen [13]

6 weeks

1 day

2 weeks

Bolt et al. [9]

6 weeks

5 days

5 weeks

Costa et al. [15]

4 to 10 weeks

6 days

6 weeks

Meagher et al. [16]

7 weeks

6 days

6 weeks

Rasmussen et al. [17]

1 to 4 weeks

6 days

2 weeks

  1. The ages marked with bold italic indicates that this age had a benefit over the age without marking. The ages written with italics indicates no differences between the two ages, or that there are advantages and disadvantages for both ages