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  1. 'Libido' in the larger farm animals: a review

    Contributor(s):: Wodzicka-Tomaszewska, M., Kilgour, R., Ryan, M.

    The term 'libido', first used by Freud to refer to the force by which the sexual instinct is represented in the mind, has become more and more used to refer to some aspects of sexual behaviour in large domestic animals. From being a wide, rather imprecise term, it has come to be defined in a...

  2. A cafeteria diet alters the decision making strategy and metabolic markers in Sprague-Dawley male rats

    Contributor(s):: Virtuoso, Alessandro, Forkman, Björn, Sarruf, David A., Tveden-Nyborg, Pernille, Sørensen, Dorte Bratbo

    Consumption of diets rich in refined sugar and saturated fat has been linked with development of mild cognitive impairment and dementia in humans. Most cognitive paradigms used in biomedical research to investigate the relationship between obesity and cognition rely on food motivation and speed...

  3. A comparative assessment of potential conditioned taste aversion agents for vertebrate management

    Contributor(s):: Gill, E. L., Whiterow, A., Cowan, D. P.

    The ability of two potentially safe compounds, cinnamamide (160 mg/kg) and thiabendazole (100 and 200 mg/kg) to generate a conditioned taste aversion (CTA) in laboratory Rattus norvegicus to a novel food was assessed and compared to that of 17 alpha ethinyl oestradiol (4 mg/kg). All compounds...

  4. 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...

  5. 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....

  6. A study of the relative aversiveness of a new daily injection procedure for pigs

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

    The aversiveness of a new injection procedure (Injection treatment), developed for daily administration of porcine somatotropin, for pigs over 3 weeks, late in the growing phase, was examined. The injection, via a 13-mm, 16-gauge needle, utilized a low penetration gas injection gun. Observations...

  7. Ability of castrate male sheep treated with oestrogen or testosterone to induce and detect oestrus in ewes

    Contributor(s):: Fulkerson, W. J., Adams, N. R., Gherardi, P. B.

    In 4 experiments, Merino wethers were treated 3 times at weekly intervals with 1 mg oestradiol cypionate in oil or 105 mg testosterone propionate in polyethylene glycol. The male behaviour of these wethers, which developed at about the time of the 3rd injection and lasted for more than or equal...

  8. 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...

  9. 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...

  10. Aggressive behaviour and its relation to oviposition in the domestic fowl

    Contributor(s):: Hughes, B. O.

    Hens in battery cages behave differently from those housed in pens. Laying hens of two strains were housed in cages or pens and the incidence of aggression before and after laying was studied. Little aggression was seen in stable groups, so a strange bird was introduced to stimulate aggressive...

  11. 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...

  12. An examination of changes in oxytocin levels in men and women before and after interaction with a bonded dog

    Contributor(s):: Miller, S. C., Kennedy, C., DeVoe, D., Hickey, M., Nelson, T., Kogan, L.

    Oxytocin (OT) is a neuropeptide increasingly recognized for its role in bonding, socialization, and stress relief. Previous research has demonstrated participants' OT levels increased after interacting with or petting a dog, suggesting OT is at least partially responsible for the calm, relaxing...

  13. Animal models and human depressive disorders

    Contributor(s):: R. J. Katz

    Clinical depressive disorders are complex in presentation, dissimilar in origins and course, and often pleomorphic in character. An adequate understanding of their origins, biological substrates, and amenability to established and novel forms of therapy demands biological and social interventions...

  14. 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...

  15. Associations between the dominance status and sexual development, skin lesions or feeding behaviour of intact male pigs

    Contributor(s):: Parois, Severine, Larzul, Catherine, Prunier, Armelle

    In boars, social relationships could influence pubertal development and feeding behaviour. The objectives of the present study were to determine the relationships between behaviour (agonistic, mounting and feeding behaviours), plasma sex steroids (oestradiol, testosterone) and fat androstenone. A...

  16. Background to anomalous behaviour

    Contributor(s):: Fraser, A. F.

  17. Behavior of feral horses in response to culling and GnRH immunocontraception

    Full-text: Available

    | Contributor(s):: Ransom, Jason I., Powers, Jenny G., Garbe, Heidi M., Oehler, Michael W., Nett, Terry M., Baker, Dan L.

    Wildlife management actions can alter fundamental behaviors of individuals and groups, which may directly impact their life history parameters in unforeseen ways. This is especially true for highly social animals because changes in one individual's behavior can cascade throughout its social...

  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. Behavioral interactions and glucocorticoid production of Somali wild ass (Equus africanus somaliensis) mothers and foals

    | Contributor(s):: Kozlowski, Corinne P., Baskir, Eli, Clawitter, Helen L., Franklin, Ashley D., Thier, Tim, Fischer, Martha, Powell, David M., Asa, Cheryl S.

  20. Behavioral reactions relate to adrenal activity and temperament in male clouded leopards (Neofelis nebulosa)

    | Contributor(s):: DeCaluwe, Heather B., Wielebnowski, Nadja C., Howard, JoGayle, Pelican, Katharine M., Ottinger, Mary Ann

    Due to strong intra-specific aggression and frequent adverse reactions to changes encountered in the captive setting, clouded leopards (Neofelis nebulosa) are particularly difficult to manage as a self-sustaining population in zoos. The aim of this study was to examine the efficacy of behavioral...