Welfare of the minipig with special reference to use in regulatory toxicology studies

Journal of Pharmacological and Toxicological Methods
Lars EllegaardSteering Group of the RETHINK Project

Abstract

This paper reviews the animal welfare challenges associated with the use of minipigs in toxicology testing, and compares these to published knowledge on the other widely used non-rodent species (dogs and non-human primates). Welfare challenges arise from housing and management of populations under laboratory conditions, and from the procedures carried out for product evaluation. Welfare assessment requires a multidisciplinary approach: cardiovascular parameters, adrenocortical hormones and behaviour are well known parameters. However, reliable non-invasive methods to assess welfare and species-specific benchmarks need further development in minipigs. Husbandry of minipigs (housing, diet, and socialisation needs) to promote good welfare is described in the revised Appendix A of the European Convention (ETS 123). This has been supplemented by knowledge of species biology and expert opinion from experienced minipig users. Challenges when using minipigs in toxicity testing have been reviewed in detail. Although deeper location of the peripheral blood vessels makes blood sampling more challenging, samples can be taken with minimal distress when staff members are well trained. Temporary and chronic vascular catheters can also be used...Continue Reading

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Citations

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