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All Categories (41-60 of 77)

  1. Repeated transport and isolation during pregnancy in ewes: differential effects on emotional reactivity and weight of their offspring

    Contributor(s):: Roussel-Huchette, S., Hemsworth, P. H., Boissy, A., Duvaux-Ponter, C.

    The aim of this experiment was to study the effects of different stressors applied to pregnant ewes during the last third of pregnancy on the emotional reactivity of their lambs. Forty ewes were subjected twice a week during the last 6 weeks of gestation to 10 sessions of isolation (ISOL, n=20)...

  2. Studies on oral stereotypies in restricted-fed broiler breeders

    Contributor(s):: Savory, C. J.

  3. The effects of housing experience on calf responses to handling and transport

    Contributor(s):: Trunkfield, H. R.

  4. Postweaning grouped sows: effects of aggression on hormonal patterns and oestrus behaviour

    Contributor(s):: Pedersen, L. J., Rojkittikhun, T., Einarsson, S., Edqvist, L. E.

    The concentration of cortisol, oestradiol-17 beta , prolactin and the amount of social behaviour shown during oestrus were measured in 3 groups of 3 sows (Swedish X Swedish Yorkshire) grouped after weaning and correlated with aggressive behaviour. No relations between the amount of aggression...

  5. Salivary cortisol in pigs after adrenocorticotrophin, food and water deprivation, handling, transport simulation and mixing

    Contributor(s):: Parrot, R. F., Misson, B. H., Baldwin, B. A.

  6. Social rank is related to adrenal cortex activity and reproduction in group-housed gilts

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

  7. Acute effects of cow-calf separation on heart rate, plasma cortisol and behaviour in multiparous dairy cows

    Contributor(s):: Hopster, H., O'Connell, J. M., Blokhuis, H. J.

    Removing the calf after bonding may induce acute stress in the dairy cow. The responses of 8 Holstein-Friesian cows were examined immediately after the removal of their calves on the third day after parturition. Blood samples were taken before and after the separation for cortisol analysis. After...

  8. An evaluation of the contribution of isolation, up-ending and wool removal to the stress response to shearing

    Contributor(s):: Hargreaves, A. L., Hutson, G. D.

    A 2x2x2 factorial experiment examined the effects of 3 components of shearing (isolation, up-ending and wool removal) on the development of a stress response to handling. 10 Merino wethers were allocated to each treatment. Haematocrit, plasma cortisol and plasma glucose were measured in a series...

  9. Behavioural and adrenocortical coping strategies and the effect on eosinophil leucocyte level and heterophil/lymphocyte-ratio in beech marten ( Martes foina )

    Contributor(s):: Hansen, S. W., Damgaard, B. M.

  10. Diurnal and individual variation in behaviour of restricted-fed broiler breeders

    Contributor(s):: Kostal, L., Savory, C. J., Hughes, B. O.

  11. Effects of freeze or hot-iron branding of Angus calves on some physiological and behavioural indicators of stress

    Contributor(s):: Lay, D. C., Friend, T. H., Grissom, K. K., Bowers, C. L., Mal, M. E.

    Twenty-four Angus calves averaging 293 +or- 38 kg either hot-iron branded (H), freeze branded (F), or served as a sham (S). Calves were grouped for temperament, weight, and sex, and randomly assigned to day and order in which treatments were applied. To reduce stress from handling at treatment...

  12. Effects of social environment on welfare status and sexual behaviour of female pigs. II. Effects of space allowance

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

    This study examined the effects of housing groups of adult female pigs (6 pigs per group) with a space allowance of 1, 2 or 3 msuperscript 2 per pig on sexual behaviour and welfare status, determined by plasma free-corticosteroid concentrations. A lower percentage of gilts was detected in oestrus...

  13. Novel box breeding has variable effects on heart rate and cortisol response of cattle

    Contributor(s):: Lay, D. C., Friend, T. H., Grissom, K. K., Hale, R. L., Bowers, C. L.

    In 7 experiments, cattle of different sex classes (bulls, steers, and cows), age (2-10 years), and breed (Angus, Hereford, and Braford) were subjected, one at a time, to restraint by a standard squeeze chute (cattle crush) or a novel 'breeding box' in order to compare each method's effects on...

  14. Physiological and behavioural effects of handling and restraint in the ball python ( Python regius ) and the blue-tongued skink ( Tiliqua scincoides )

    Contributor(s):: Kreger, M. D., Mench, J. A.

    Four handling techniques commonly used with snakes and lizards in zoological park reptile collections were evaluated with respect to animal well-being. Adult male blue-tongued skinks (n = 3) and ball pythons (n = 4) were either handled gently, restrained manually, or container restrained for 10...

  15. Some effects of repeated handling on stress responses in sheep

    Contributor(s):: Hargreaves, A. L., Hutson, G. D.

    Repeated exposure to a handling treatment was investigated as a possible method of reducing the stress response to shearing. Sheep were exposed to sham shearing (a procedure in which no wool is removed, but which otherwise resembles shearing) on 4 occasions at 2-week intervals. The peak cortisol...

  16. The effects of aversively handling pigs, either individually or in groups, on their behaviour, growth and corticosteroids

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

    The influence of three handling treatments, imposed for 10 weeks from 15 kg liveweight, on the behaviour, growth, subsequent reproductive performance and free corticosteroid concentrations were studied in 60 female pigs. The pleasant treatment involved individually handling the pig in a pleasant...

  17. The stress response in sheep during routine handling procedures

    Contributor(s):: Hargreaves, A. L., Hutson, G. D.

    Five routine handling treatments (shearing, crutching, drenching, dipping and drafting) were imposed on groups of 30 Merino wethers. Haematocrit and plasma cortisol were measured as an indication of the physiological stress response. Both parameters were significantly elevated after shearing...

  18. Behavioral and physiological correlates of stress in laboratory cats

    Contributor(s):: Carlstead, K., Brown, J. L., Strawn, W.

    Sixteen domestic cats were used to investigate the pituitary-adrenal, pituitary-gonadal and behavioural consequences of an unpredictable handling and husbandry routine. After a 10-day baseline period of standard laboratory procedures, 8 cats ('stressed cats', STR) were subjected to a 21-day...

  19. Behavioural and hormonal responses to acute surgical stress in sheep

    Contributor(s):: Fell, L. R., Shutt, D. A.

    A combination of plasma cortisol and beta -endorphin measurement, behavioural observation and estimation of aversion to humans (by an arena test) was used to assess the response to the modified mules operation in 6- to 7-month-old Merino wethers. The operation involves the surgical removal of...

  20. Effects of social environment on welfare status and sexual behaviour of female pigs. I. Effects of group size

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

    The study examined the effects of housing 24 adult female pigs in groups of 2, 4 or 8 with a space allowance of 1.4msuperscript 2 per pig on welfare status, as indicated by plasma free-corticosteroid concentrations and behaviour patterns, and sexual behaviour. Housing gilts in pairs resulted in...