{
  "url": "https://openlegislation.uk/eu-directive-2010-63/annex-III/section-B/division-1/division-Table",
  "json_url": "https://openlegislation.uk/eu-directive-2010-63/annex-III/section-B/division-1/division-Table.json",
  "legislation": "eudr/2010/63",
  "legislation_title": "Directive 2010/63/EU of the European Parliament and of the Council of 22 September 2010 on the protection of animals used for scientific purposes (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-directive-2010-63",
  "path": "annex/III/section/B/division/1/division/Table",
  "kind": "division",
  "number": "Table 1.1",
  "heading": "Mice",
  "text": "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.\nBody weight(g)\nMinimum enclosure size(cm2)\nFloor area per animal(cm2)\nMinimum enclosure height(cm)\nDate referred to in Article 33(2)\nIn stock and during procedures\nup to 20\n330\n60\n12\n1 January 2017\nover 20 to 25\n330\n70\n12\nover 25 to 30\n330\n80\n12\nover 30\n330\n100\n12\nBreeding\n330\nFor a monogamous pair (outbred/inbred) or a trio (inbred). For each additional female plus litter 180 cm2 shall be added.\n12\nStock at breedersEnclosure size950 cm2\nless than 20\n950\n40\n12\nEnclosure size1 500 cm2\nless than 20\n1 500\n30\n12",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "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."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/2010/63/annex/III/section/B/division/1/division/Table",
    "retrieved_at": "2026-11-01T14:42:06.739931+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}