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The University of Southampton
Animal Welfare and Ethical Review Body

Numbers and types of animals used in procedures regulated under ASPA at the University of Southampton

The University of Southampton openly shares the numbers of animals used in procedures under the Animals (Scientific Procedures) Act 1986 (ASPA) as part of its commitment to the Concordat on Openness on Animal Research in the UK.

The AWERB and researchers at the University consider it essentially important that steps are taken to ensure that animals experience minimal pain and suffering during any experimental process.

The table below shows the reported numbers and rounded percentages of animals used at the University of Southampton under ASPA for the previous five calendar years.

The Number of Animals Used in Procedures Under ASPA
Species20182019202020212022
Mice 20,340 (98.5%) 19,787 (97.4%) 14,719 (98.6%) 12,055 (99%) 12,083 (98.2%)
Rats 104 (0.5%) 86 (0.4%) 37 (0.2%) 13 (<1%) None (0%)
Fish 25 (0.1%) None (0%) None (0%) None (0%) 220 (0.8%)
Rabbits None (0%) None (0%) None (0%) 3 (<1%) None (0%)
Chicken Embryos 173 (0.8%) 445 (2.2%) 168 (1.1%) 128 (1%) None (0%)
Sheep None (0%) None (0%) None (0%) None (0%) None (0%)
Total 20,642 20,318 14,924 12,199 12,303

The table below shows the numbers of animals used at different severity thresholds for procedures under ASPA over the last four years.

The Numbers of Animals Used at Different Severity Thresholds
Severity  2019202020212022
Mice Rats Mice Rats Mice Rats Rabbits Mice Fish
Sub-Threshold 6,783 (34%) 0 (0%) 6160 (42%) 0 (0%) 5065 (42%) 0 (0%) 0 (0%) 5203 (43%) 0 (0%)
Mild 9,642 (49%) 5 (6%) 5250 (36%) 3 (8%) 4316 (36%) 0 (0%) 0 (0%) 3906 (32%) 220 (100%)
Moderate 3,124 (16%) 42 (49%) 3157 (21%) 0 (0%) 2474 (21%) 11 (85%) 3 (100%) 2888 (24%) 0 (0%)
Severe 82 (<1%) 0 (0%) 106 (1%) 0 (0%) 128 (1%) 0 (0%) 0 (0%) 64 (<1%) 0 (0%)
Non-Recovery 158 (<1%) 39 (45%) 46 (<1%) 34 (92%) 72 (<1%) 2 (15%) 0 (%) 22 (<1%) 0 (0%)
Total 19,789 86 14,719 37 12,055 13 3 12083 220

The above data is collected and returned to the Home Office at the end of January each year. The figures for the number of animals used in procedures and severity thresholds for the previous year will be updated on this website as soon as possible, once figures have been sent to the Home Office.

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