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  1. Telemetry as a method for measuring the impact of housing conditions on rats' welfare

    Contributor(s):: Krohn, T. C., Hansen, A. K., Dragsted, N.

    Various tools have been developed over previous years to study the welfare of laboratory animals. These include preference tests, which are commonly used to evaluate housing environments. Preference tests, however, have some pitfalls. They supply information only on the animals' present...

  2. The assessment of bar chewing as an escape behaviour in laboratory mice

    Contributor(s):: Lewis, R. S., Hurst, J. L.

    The ability to measure objectively how an animal perceives its home environment is essential for improving the housing and husbandry conditions of laboratory animals. Chewing at cage bars by a rodent may reflect the animal's desire to escape from its home cage and thus provide a measure of the...

  3. The early ontogeny of bar-gnawing in laboratory gerbils

    | Contributor(s):: Wiedenmayer, C.

  4. The effect of handling under anaesthetic on the recapture rate of wild ship rats ( Rattus rattus )

    | Contributor(s):: Prout, D. M., King, C. M.

    This paper describes a two-part study of small predators in New Zealand forests. First, during 12 days of live-trapping, 31 wild ship rats were captured, tagged and released: 9 were handled while anaesthetised using halothane and 22 were handled while conscious using gloves. There was a...

  5. The effect of mirrors on the behaviour of singly housed male and female laboratory rabbits

    | Contributor(s):: Edgar, J. L., Seaman, S. C.

    It is widely recognised that single housing is detrimental to the welfare of social species. However, some experimental procedures dictate that laboratory animals are housed individually. There is evidence to suggest that, by mimicking social contact, mirrors are beneficial to the welfare of...

  6. The effect of routine experimental procedures on physiological parameters in mice kept under different husbandry conditions

    | Contributor(s):: Meijer, M. K., Kramer, K., Remie, R., Spruijt, B. M., Zutphen, L. F. M. van, Baumans, V.

    Laboratory animals are frequently subjected to routine procedures, such as injections or the withdrawal of blood samples. Acute stress caused by such procedures is associated with physiological changes that can have a strong impact on experimental results. This study investigated the integrated...

  7. The effect of three different items of cage furniture on the behaviour of male C57BL/6J mice in the plus-maze test

    | Contributor(s):: Okva, K., Nevalainen, T., Mauranen, K., Pokk, P.

    The aim of this study was to assess the effects of specific regimens of enrichment on the behaviour of C57BL/6J mice in the elevated plus-maze test (EPM). A total of 192 male C57BL/6J mice were allocated randomly to 32 cages. Three different items of cage furniture (CF) made of aspen - a mouse...

  8. The effects of intrusion on the behaviour of caged laboratory rats ( Rattus norvegicus ): consequences for welfare

    | Contributor(s):: Barclay, R.

    This experiment examines the consequences and welfare implications of the introduction of new rats to established (resident) caged laboratory rat groups. The effects on investigatory and aggressive behaviours of the established and the newly introduced rats were measured. The aggressive status...

  9. The humaneness of rodent pest control

    | Contributor(s):: Mason, G., Littin, K. E.

  10. The influences of standard laboratory cages on rodents and the validity of research data

    | Contributor(s):: Sherwin, C. M.

    Standard cages for laboratory animals are often small, minimalist and barren. Such cages can compromise animal welfare, indicating that there are welfare-based reasons for improving their designs. However, a second issue, that is, whether animals from standard laboratory housing and husbandry...

  11. The welfare impact of gavaging laboratory rats

    | Contributor(s):: Bonnichsen, M., Dragsted, N., Hansen, A. K.

    Gavaging (oral dosing) has previously been shown to have only a short-term effect on behavioural parameters in the laboratory rat. The aim of this study was to determine if the gavaging of laboratory rats influenced their heart rate, blood pressure and body temperature, and if so, whether the...

  12. The welfare impact of increased gavaging doses in rats

    | Contributor(s):: Alban, L., Dahl, P. J., Hansen, A. K., Hejgaard, K. C., Jensen, A. L., Kragh, M., Thomsen, P., Steensgaard, P.

    Textbook recommendations for gavaging rats vary between 1-5 ml for an adult rat. Rats weighing either 130 or 250 g were gavaged with varying dosages of barium sulphate (BaSO4). After dosing, radiographs were taken at 0, 15 and 60 min. Animals showing a section of the small intestine totally...

  13. The welfare problems associated with using transgenic mice to bioassay for bovine spongiform encephalopathy

    | Contributor(s):: Jenkins, E. S., Combes, R. D.

    The ethical score system devised by Porter (Nature (1992) 365: 101-102) was applied to the transgenic mouse model used to bioassay BSE. Areas identified as potential targets for reducing the severity of the bioassay included the method of inoculation, duration of the bioassay and the duration of...

  14. Tools to measure and improve animal welfare: reward-related behaviour

    | Contributor(s):: Harst, J. E. van der, Spruijt, B. M.

    There is an increasing requirement for tools to assess and improve animal welfare in an objective and scientifically based manner. In our research a concept of welfare is applied which states that welfare is determined by the balance between positive and negative experiences. This concept implies...

  15. Traps for killing stoats ( Mustela erminea ): improving welfare performance

    | Contributor(s):: Warburton, B., Poutu, N., Peters, D., Waddington, P.

    Fenn traps are widely used in New Zealand for control of small predators. Introduced stoats (Mustela erminea) pose a significant risk to many indigenous New Zealand bird species, and the Department of Conservation (DOC) has used Fenn traps to reduce their numbers over the last 20-30 years....

  16. Use of in-cage shelters by laboratory rats

    | Contributor(s):: Townsend, P.

    The effect of providing a shelter to single-housed rats was measured in terms of the preference shown for a cage containing a shelter compared with a barren cage, the range of behaviours performed and the apparent fearfulness of the animals. Of 20 Wistar male rats, all showed a strong preference...

  17. Welfare considerations with regard to transgenic animals

    | Contributor(s):: Poole, T. B.

  18. Bushmen and mammal-fauna : a survey of the mammals traded in bush-meat markets of local people in the rainforests of south-eastern Nigeria [sic]

    | Contributor(s):: Angelici, Francesco M., Luiselli, Luca, Politano, Edoardo, Akani, Godfrey C.

  19. Zoonotic disease concerns in animal-assisted therapy and animal visitation programs

    | Contributor(s):: Waltner-Toews, D.

    In a survey of 150 systematically selected US animal care agencies and 74 Canadian humane societies to determine the prevalence of animal assisted therapy (AAT) programmes (concerns about, and experience with zoonotic diseases; and precautions taken to prevent zoonotic disease transmission) 69 US...

  20. Individually ventilated cages and rodent welfare: report of the 2002 RSPCA/UFAW rodent welfare group meeting

    | Contributor(s):: Hawkins, P., Anderson, D., Applebee, K., Key, D., Wallace, J., Milite, G., Clark, J. M., Hubrecht, R., Jennings, M.

    The RSPCA/UFAW Rodent Welfare Group holds a one-day meeting every autumn so that its members can discuss current welfare research and exchange views on rodent welfare issues. The 2002 meeting focused on welfare issues associated with housing rodents in individually ventilated cages (IVCs)....