Division Table 1.1 Mice
United Kingdom
| Post-weaned mice may be kept at these higher stocking densities for the short period after weaning until issue, provided that the animals are housed in larger enclosures with adequate enrichment, and these housing conditions do not cause any welfare deficit such as increased levels of aggression, morbidity or mortality, stereotypes and other behavioural deficits, weight loss, or other physiological or behavioural stress responses. | |||||
| Body weight(g) | Minimum enclosure size(cm2) | Floor area per animal(cm2) | Minimum enclosure height(cm) | Date referred to in Article 33(2) | |
|---|---|---|---|---|---|
| In stock and during procedures | up to 20 | 330 | 60 | 12 | 1 January 2017 |
| over 20 to 25 | 330 | 70 | 12 | ||
| over 25 to 30 | 330 | 80 | 12 | ||
| over 30 | 330 | 100 | 12 | ||
| Breeding | 330 For a monogamous pair (outbred/inbred) or a trio (inbred). For each additional female plus litter 180 cm2 shall be added. | 12 | |||
| Stock at breedersf1Enclosure size950 cm2 | less than 20 | 950 | 40 | 12 | |
| Enclosure size1 500 cm2 | less than 20 | 1 500 | 30 | 12 | |
Annotations
Footnotes
- f1
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Post-weaned mice may be kept at these higher stocking densities for the short period after weaning until issue, provided that the animals are housed in larger enclosures with adequate enrichment, and these housing conditions do not cause any welfare deficit such as increased levels of aggression, morbidity or mortality, stereotypes and other behavioural deficits, weight loss, or other physiological or behavioural stress responses.