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Resources (1-20 of 72)

  1. A novel environment inhibits milk ejection in the pig but not through HPA activity

    Contributor(s):: Rushen, J., Ladewig, J., Passille, A. M. B. de

    Six sows (3-14 days postpartum) were placed with their piglets in a different farrowing pen (novel environment) for 2 h or were driven into the new pen then immediately returned to their own pen (control). All sows were subject to both treatments over 2 consecutive days. Nursings were recorded as...

  2. A simple method for fostering lambs using anoestrous ewes with artificially induced lactation and maternal behaviour

    Contributor(s):: Kendrick, K. M., Costa, A. P. da, Hinton, M. R., Keverne, E. B.

    The possibility of a simple method for using anoestrous ewes to foster orphan or triplet lambs was investigated. 22 anoestrous ewes (12 multiparous and 20 multiparous) were given vaginal sponges containing medroxyprogesterone acetate (250 mg) and oestradiol dipropionate (ODP) (25 mg) for 2 wk....

  3. Adrenocorticotrophin-induced stress response in captive vicunas ( Vicugna vicugna ) in the Andes of Chile

    Contributor(s):: Bonacic, C., Macdonald, D. W., Villouta, G.

    The vicuna is mainly used in two ways: wild captured, shorn and returned to the wild; or wild captured and maintained in captivity as part of a programme of sustainable use in the Andes of South America. Farming of wild vicunas has hitherto involved no assessment of their welfare. In this study a...

  4. Aggressive behavior associated with naturally elevated serum testosterone in mares

    Contributor(s):: Beaver, B. V., Amoss, M. S., Jr.

    Of 17 mares which had shown masculine characteristics (dominant personality, aggression, cresty neck, firm muscle tone) three had serum testosterone levels of 50-75 pg/ml, four 75-100 pg/ml, eight 100-400 pg/ml and two 422 and 992 pg/ml. The normal value for mares was considered to be less than...

  5. 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...

  6. Assessment of welfare from physiological and behavioural responses of New Zealand dairy cows exposed to cold and wet conditions

    Contributor(s):: Webster, J. R., Stewart, M., Rogers, A. R., Verkerk, G. A.

    There is a need to assess the welfare of dairy cows that live outdoors under cold and wet conditions. This study combined a number of techniques to measure stress and make an assessment of welfare in this situation. Two groups often non-pregnant, non-lactating Holstein Friesian cows were exposed...

  7. 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...

  8. 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.

  9. 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...

  10. Behavioural patterns and progesterone, cortisol and prolactin levels around parturition in European (Large-White) and Chinese (Meishan) sows

    Contributor(s):: Meunier-Salaun, M. C., Gort, F., Prunier, A., Schouten, W. G. P.

    The behaviour of 7 Large-White (LW) and 7 Meishan (MS) sows was monitored continuously on video from Day 111 of gestation to 24 h post partum (Experiment 1). In a second experiment, plasma levels of progesterone, cortisol and prolactin were measured in 6 LW and 6 MS sows from Day 105 of gestation...

  11. Behavioural responses of heifers to ACTH injections

    | Contributor(s):: Negrao, J. A., Porcionato, M. A. de F., Passille, A. M. de, Rushen, J.

    The objective of this study was to investigate behavioural changes in Holstein heifers caused by exogenous adrenocorticotropic hormone (ACTH) administration. Twelve 11-month-old heifers were submitted to either a single saline or ACTH injection and then the treatments were switched after 3 days...

  12. Belgian consumers' attitude towards surgical castration and immunocastration of piglets

    | Contributor(s):: Vanhonacker, F., Verbeke, W., Tuyttens, F. A. M.

    In the vast majority of European countries, piglets are surgically castrated in order to eliminate the risk of boar taint, an odour or flavour that can be present when pork from entire males is cooked. However, surgical castration is the subject of much debate and criticism as a result of its...

  13. Changes in heart rate, plasma cortisol and haematocrit of sheep during a shearing procedure

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

    Nine Merino wethers were individually subjected to a series of 8 handling treatments of increasing complexity, culminating in partial shearing. The treatments were control, separation from other sheep, isolation, human presence, blood sampling, up-ending, exposure to shearing noise, and wool...

  14. Confinement of lambs ( Ovis aries ) in metabolism stalls increased adrenal function, thyroxine and motivation for movement

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

    Eighteen, 8-week-old Rambouillet wether lambs, habituated to human contact were maintained in a paddock prior to being placed in individual 41 cm x 95 cm metabolism stalls for 9 days. Blood samples were taken via jugular cannulae 7 days prior to, and after 2 and 9 days of confinement. After 2...

  15. Effect of gestation management system on gilt and piglet performance

    | Contributor(s):: Muns, R., Manzanilla, E. G., Manteca, X., Gasa, J.

    Individual gestation housing of pregnant sows in stalls from four weeks after mating is banned in the EU. Two experiments were conducted to study the effect of two gestation management and housing systems (STALL: gilts housed in stalls and PEN: gilts loose-housed in pens with increased feed...

  16. Effect of hypothalamic factor treatments on the behaviour of sows during lactation and on their behavioural and cortisol responses to weaning

    | Contributor(s):: Passille, A. M. B. de, Robert, S., Dubreuil, P., Pelletier, G., Brazeau, P.

    The effects of daily treatments between Days 5 and 25 of lactation with growth hormone-releasing factor (GRF:20 micro g/kg) and thyrotropin-releasing factor (TRF: 1 or 9 micro g/kg) on the behaviour of 51 primiparous lactating sows and on their behavioural and cortisol response to weaning...

  17. Effect of hypothalamic factor treatments on the behaviour of sows during lactation and on their response to weaning management

    | Contributor(s):: Passille, A. M. B. de, Robert, S., Pelletier, G., Brazeau, P.

  18. Effects of acclimation to human interaction on performance, temperament, physiological responses, and pregnancy rates of Brahman-crossbred cows

    | Contributor(s):: Cooke, R. F., Arthington, J. D., Araujo, D. B., Lamb, G. C.

    The objective of this study was to evaluate, over 2 consecutive years, the effects of acclimation to human interaction on performance, temperament, plasma concentrations of hormones and metabolites, and pregnancy rates of Brahman-crossbred cows. A total of 160 Braford and 235 Brahman x British...

  19. Effects of prenatal handling stress on adrenal weight and function and behaviour in novel situations in blue fox cubs ( Alopex lagopus )

    | Contributor(s):: Braastad, B. O., Osadchuk, L. V., Lund, G., Bakken, M.

    This study investigated the effects of a 1-min daily handling stress given to farmed blue fox females in the last third of gestation on adrenal weight and function in male and female offspring and on behaviour in novel situations. In 10-day-old cubs (n=68), records were made of serum...

  20. Effects of shelter and body condition on the behaviour and physiology of dairy cattle in winter

    | Contributor(s):: Tucker, C. B., Rogers, A. R., Verkerk, G. A., Kendall, P. E., Webster, J. R., Matthews, L. R.

    Our objective was to understand how body condition and shelter affected behavioural and physiological responses of dairy cattle during winter weather. Twenty non-lactating dairy cows were divided into two groups of 10. Within each group, five animals had a high body condition score (9 out of 10)...