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  1. Frequency of headshaking in White Leghorn chickens in response to hormonal and environmental changes

    Contributor(s):: Dunnington, E. A., Siegel, P. B.

    Frequency of headshaking in chickens from two selected lines (HA and LA) known to differ in this trait was observed at various ages, during hormonal fluctuations and in different environmental surroundings. Neither hormonal changes concomitant with the initial onset of lay nor ingestion of...

  2. Rapid shaping of behaviour associated with high urinary cortisol in domestic dogs

    Contributor(s):: Blackwell, E. J., Bodnariu, A., Tyson, J., Bradshaw, J. W. S., Casey, R. A.

    The occurrence of stress has widely been associated with impairments in learning abilities in animals, although the influence of stress appears to differ with the complexity of tasks. Previous research has suggested that some domestic dogs exhibit both physiological (elevated cortisol) and...

  3. Stereotypies, adrenal function and neurophysiological aspects of gestating sows

    Contributor(s):: Borell, E. von, Hurnik, J. F.

  4. The effect of orientation during trailer transport on heart rate, cortisol and balance in horses

    Contributor(s):: Clark, D. K., Friend, T. H., Dellmeier, G.

    Sixteen same-sex pairs of Quarter Horse and Quarter Horse-cross yearlings (8 pairs during each of 2 trials, 1 year apart) were transported for 17.8 +or- 0.52 min over a standard course with one horse facing in the direction of travel and one facing the opposite direction. The orientation of the...

  5. The effects of design of individual stalls on the social behaviour and physiological responses related to the welfare of pregnant pigs

    Contributor(s):: Barnett, J. L., Hemsworth, P. H., Winfield, C. G.

    Plasma free-corticosteroid concentrations, aggressive behaviour and levels of motivation to interact socially and explore a novel environment were observed to test the hypothesis that the chronic stress response previously observed in tether-housed pigs may have been due to unresolved aggression...

  6. The effects of genotype on physiological and behavioural responses related to the welfare of pregnant pigs

    Contributor(s):: Barnett, J. L., Hemsworth, P. H., Cronin, G. M., Winfield, C. G., McCallum, T. H., Newman, E. A.

    Plasma free-corticosteroid concentrations, aggressive behaviour and levels of motivation to interact socially and explore a novel arena were observed in an experiment to examine whether differences previously observed between pigs in neck-tethers and groups are shown by pigs of different...

  7. The welfare of adult pigs: the effects of five housing treatments on behaviour, plasma corticosteroids and injuries

    Contributor(s):: Barnett, J. L., Cronin, G. M., Winfield, C. G., Dewar, A. M.

    The effects of 5 housing treatments (tethered, pairs, or a group indoors, in a yard or in a paddock) on the behaviour, physiology (stress physiology and blood metabolites), health (injury status) and production (food eaten and oestrous expression) of 30 non-pregnant adult female pigs were...

  8. The welfare of pigs in two farrowing/lactation environments: cortisol responses of sows

    Contributor(s):: Cronin, G. M., Barnett, J. L., Hodge, F. M., Smith, J. A., McCallum, T. H.

    Plasma free cortisol concentrations were measured in 24 primiparous sows housed from day 104 after mating up to day 2 after parturition. Concentrations were measured in 22 of these sows during days 2-29 of lactation, housed in either commercial farrowing crates, or farrowing pens with straw. The...

  9. Brain measures which tell us about animal welfare

    Contributor(s):: Broom, D. M., Zanella, A. J.

    Studies of the brain inform us about the cognitive abilities of animals and hence, affect the extent to which animals of that species are respected. However, they can also tell us how an individual is likely to be perceiving, attending to, evaluating, coping with, enjoying, or disturbed by its...

  10. Conservation and animal welfare issues arising from forestry practices. (Special Issue: Conservation and animal welfare.)

    Contributor(s):: Blumstein, D. T.

    Forestry practices may directly kill animals as well as destroy and fragment their habitat. Even without habitat destruction, logging and its associated forest management practices (which include road building, re-forestation, and often increased recreational use) create noise, frighten animals,...

  11. Effect of group housing and oral corticosterone administration on weight gain and locomotor development in neonatal rats

    Contributor(s):: Young, L. A., Pavlovska-Teglia, G., Stodulski, G., Hau, J.

  12. Environmental enrichment for maned wolves ( Chrysocyon brachyurus ): group and individual effects

    Contributor(s):: Vasconcellos, A. S., Guimaraes, M. A. B. V., Oliveira, C. A., Pizzutto, C. S., Ades, C.

    Procedures that increase foraging and exploratory behaviours are generally accepted as effective at improving welfare and reducing stereotypies in captive animals. To determine the effect of food and toy enrichment on the behaviour and hormonal levels of maned wolves (Chrysocyon brachyurus), 11...

  13. Euthanasia methods, corticosterone and haematocrit levels in Xenopus laevis : evidence for differences in stress?

    Contributor(s):: Archard, G. A., Goldsmith, A. R.

    Amphibians, like other vertebrates, respond to acute stressors by releasing glucocorticoid steroid hormones that mediate physiological and behavioural responses to stress. Measurement of stress hormones provides a potential means to improve the welfare of laboratory animals. For example,...

  14. Faecal glucocorticoid level is not correlated with stereotypic pacing in two captive margays ( Leopardus wiedii )

    Contributor(s):: Gusset, M.

    The 'coping hypothesis' of stereotypic behaviour - that stereotypies are performed as a means of helping the animal to cope with its environment by reducing stress - was tested using two adult female margays (Leopardus wiedii), an endangered neotropical small cat species. Within-individual and...

  15. Influence of indoor-cat group size and dominance rank on urinary cortisol levels

    Contributor(s):: Lichtsteiner, M., Turner, D. C.

    Domestic cats (Felis silvestris catus) are often housed indoors both singly and in groups. However, there is a lack of studies dealing with cat-cat relationships, group composition and effects of environmental parameters on the well-being of privately-owned cats. One way to index the effects of...

  16. Reactions of cattle to head-restraint at stunning: a practical dilemma

    Contributor(s):: Ewbank, R., Parker, M. J., Mason, C. W.

    The behavioural reactions and blood cortisol levels of cattle stunned using a penetrating captive-bolt pistol whilst standing free in a stunning box were compared with those obtained from cattle similarly stunned but with their heads held in a hydraulically operated chin-lift type of head...

  17. Stress hormone responses of sheep to food and water deprivation at high and low ambient temperatures

    Contributor(s):: Parrott, R. F., Lloyd, D. M., Goode, J. A.

    Eight Clun Forest wethers were used to study the effects of feed and/or water deprivation at different ambient temperatures (7 or 35 degrees C) on stress hormone release. Blood samples were taken from catheterized animals at the start and at 6 h intervals during 48 h tests in an environmental...