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  1. A behavioural comparison of New Zealand White rabbits ( Oryctolagus cuniculus ) housed individually or in pairs in conventional laboratory cages

    Contributor(s):: Chu, L. R., Garner, J. P., Mench, J. A.

    Despite their gregarious nature, rabbits used for research are often housed individually due to concerns about aggression and disease transmission. However, conventional laboratory cages restrict movement, and rabbits housed singly in these cages often perform abnormal behaviours, an indication...

  2. A behavioural study of scrapie-affected sheep

    Contributor(s):: Healy, A. M., Hanlon, A. J., Weavers, E., Collins, J. D., Doherty, M. L.

    The behaviour of 12 sheep, suspected of having scrapie, and 12 clinically normal animals from the Irish Republic was observed over a 6-day period [date not given]. Confirmation of the true disease status of the animals was made at postmortem using both histopathological and immunocytochemical...

  3. A case control study of on-farm risk factors for tail biting in pigs

    Contributor(s):: Moinard, C., Mendl, M., Nicol, C. J., Green, L. E.

  4. A descriptive account of the pre-laying behaviour of hens housed individually in modified cages

    Contributor(s):: Sherwin, C. M., Nicol, C. J.

    Because incorporating nests into modified cages for laying hens might overcome some of the welfare concerns about conventional cages, the pre-laying behaviour of 24 hens housed singly in modified cages, each containing 2 nests was studied and compared with pre-laying behaviour reported previously...

  5. A descriptive survey of the range of injuries sustained and farmers' attitudes to vulva biting in breeding sows in south-west England

    Contributor(s):: Rizvi, S., Nicol, C. J., Green, L. E.

    The within-farm prevalence of vulva biting in breeding sows in south-west England was investigated using a postal survey sent to 410 pig farmers in January 1997. The response rate was 65% and there were 83 usable replies. The majority of farms where vulva biting was reported indicated a low...

  6. A method for measuring the aversiveness of sounds to domestic hens

    Contributor(s):: McAdie, T. M., Foster, T. M., Temple, W., Matthews, L. R.

    Six hens' key-pecking at each of 2 simultaneously available perspex discs (keys) was maintained by intermittent access to wheat. Over a series of conditions one of 4 sounds (music, water-hose, poultry and train), at a range of decibel levels (90-100 dB(A)) was relayed to the experimental chamber...

  7. A note on aggression and cannibalism in laying hens following re-housing and re-grouping

    Contributor(s):: Cloutier, S., Newberry, R. C.

    The effects of being moved and mixed with strangers on the incidence of aggression and cannibalism in caged White Leghorn hens with intact beaks were examined. It was predicted that mixing of strangers would increase rates of aggression and cannibalism. Hens were reared in 16 stable groups of...

  8. A note on enrichment for captive lion-tailed macaques ( Macaca silenus )

    Contributor(s):: Mallapur, A., Waran, N., Anindya, Sinha

    Two enrichment techniques were devised with the aim of reducing stress and improving welfare for captive lion-tailed macaques in an Indian zoo. In Study A, a log, cotton ropes and a feeding basket were added to the enclosures in different combinations to provide structural and feeding enrichment...

  9. A note on the behaviour of the chicken that receives feather pecks

    Contributor(s):: Riber, A. B., Forkman, B.

    Basic knowledge of feather pecking on the individual level is still limited. The aim of this study was to investigate whether active and inactive individuals preferentially attract feather pecking. Female layer hen chicks were housed in six pens with each 15 chicks. Each occurrence of gentle and...

  10. A population-based on-farm evaluation protocol for comparing the welfare of pigs between farms

    Contributor(s):: Goossens, X., Sobry, L., Odberg, F., Tuyttens, F., Maes, D., Smet, S. de, Nevens, F., Opsomer, G., Lommelen, F., Geers, R.

    The variability of animal-based parameters was studied within a population of 41 farrow-to-finish farms. Data were collected during three visits, each corresponding to a different season within a two-year period. The largest between-farm variability was observed for Stereotypic behaviour by...

  11. A review of the problem of milk-sucking in dairy cows

    Contributor(s):: Grommers, F. J.

  12. A sequential analysis of eliminative behaviour in domestic pigs

    Contributor(s):: Wechsler, B., Bachmann, I.

    Knowledge of eliminative behaviour in pigs is of much importance for the design of housing systems in order to minimise soiling of the lying area. 53 piglets, 136 fatteners, 272 finishers and 277 sows were observed as focal animals at regularly used dunging areas in a highly structured housing...

  13. A study of aggression when group housed sows are mixed

    Contributor(s):: Mount, N. C., Seabrook, M. F.

    Twenty-six previously unacquainted sows were allocated into 5 dry sow yards. For the 26 sows the levels of aggression expressed and received were observed for the first hour following mixing at each of 2 mixings: the first, Mix 1, when the 26 sows were first allocated into the empty dry sow...

  14. A study of cortisol and beta-endorphin levels in stereotypic and normal Thoroughbreds

    Contributor(s):: Pell, S. M., McGreevy, P. D.

    Plasma and salivary cortisol levels were measured in stereotypic (n=46) and normal horses (n=46). No significant differences were found between the 2 groups of horses. The correlation between plasma and salivary cortisol concentrations of individual horses (n=66) was also examined. A significant...

  15. A survey of dog ownership in suburban Australia - conditions and behaviour problems

    Contributor(s):: Kobelt, A. J., Hemsworth, P. H., Barnett, J. L., Coleman, G. J.

    There has been an increasing emphasis in Australia on confining dogs to owner's properties (household backyards) as a solution to problems of dog aggression. Therefore, there is a need to determine the social and physical conditions that make up the dog's backyard environment and how these...

  16. A survey of foal rejecting mares

    Contributor(s):: Houpt, K., Lieb, S.

  17. Aberrant sexual behaviour of a covering stallion and its ethological solution

    Contributor(s):: Veeckman, J.

  18. Abnormal behaviour of piglets reared in individual incubators

    Contributor(s):: Hutton, R. C., Wood-Gush, D. G. M.

    Abnormal behaviour patterns were observed in piglets weaned from their mother 1 day after birth and reared artificially in small individual incubators. The incubators were plastic bins, 0.057 m3 in size, with a window at the front through which a nipple-drinker provided feeds of Carnation milk at...

  19. Abnormal oral behaviours in fattening bulls: incidence, causation and implications

    Contributor(s):: Graf, B.

  20. Addressing nonhuman primate behavioral problems through the application of operant conditioning: is the human treatment approach a useful model? (Special Issue: Conservation, enrichment and animal behavior.)

    Contributor(s):: Bloomsmith, M. A., Marr, M. J., Maple, T. L.

    Training by the systematic application of operant conditioning has been widely applied in the care, management, exhibition, and study of nonhuman primates and many other species, but is less often used to control problematic animal behavior such as stereotyped behavior or self-injurious behavior....