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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. 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...

  3. 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...

  4. 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...

  5. De-arousal properties of stereotyped behaviour: evidence from pituitary-adrenal correlates in pigs

    Contributor(s):: Dantzer, R., Mormede, P.

    Behavioural and pituitary--adrenal responses of food-deprived pigs, submitted to an intermittent food delivery schedule repeated over several weeks, were investigated. All animals reliably displayed stereotyped activites, in the form of repeated chain pulling, during the interval between food...

  6. Does frustration induce aggression in pigs?

    Contributor(s):: Arnone, M., Dantzer, R.

    Paired social encounters induced aggressive behaviour and increases in plasma corticosteroid levels in unacquainted pigs. Adreno-cortical activation was more marked in experienced than in inexperienced subordinate animals. Repeated food competition tests in an operant conditioning cage resulted...

  7. Husbandry influences on some physiological parameters of emotional responses in calves

    Contributor(s):: Stephens, D. B., Toner, J. N.

  8. Objective measurements of stress

    Contributor(s):: Stelmasiak, T., Johnston, N.

  9. Physiological and behavioural aspects of assessing stress and welfare in the pig

    Contributor(s):: Barnett, J. L.

  10. Relationship between the incidence of pre-ovulatory behaviour and the concentrations of oestradiol-17 beta and progesterone in bovine plasma

    Contributor(s):: Glencross, R. G., Esslemont, R. J., Bryant, M. J., Pope, G. S.

    The incidence of 11 components of behaviour exhibited by 24 British Friesian heifers was recorded over a 24-day period. Components were classified into 4 groups: standing, mounting, initiating behaviour (other than mounting), and receiving behaviour (other than standing). There was a peak in the...

  11. Social behaviour and adrenal cortical activity in heifers

    Contributor(s):: Adeyemo, O., Heath, E.

    Heifers of the German Brown Swiss, Holstein and White Fulani cattle were observed before, during and after a training. Individual and social behaviour were observed while the animals were under free housing in the pen, grazing in the paddock and while filing through the crush and the passage...

  12. The development and control of sexual behaviour in red deer

    Contributor(s):: Fletcher, J.

  13. Voluntary regulation of food intake in poultry

    Contributor(s):: Savory, C. J., Gentle, M. J., Hodgkiss, J. P., Kuenzel, W.

  14. 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...

  15. Behaviour and welfare of broiler breeders fed qualitatively restricted diets during rearing: are there viable alternatives to quantitative restriction?

    Contributor(s):: Sandilands, V., Tolkamp, B. J., Savory, C. J., Kyriazakis, I.

    This study investigated whether feeding female broiler breeders on qualitatively, rather than quantitatively, restricted diets during rearing could improve their welfare while also achieving desired growth rates. There were six treatments, each with four replicate pens of 12 birds. From 1 to 20...

  16. Development of tongue-playing in artificially reared calves: effects of offering a dummy-teat, feeding of short cut hay and housing system

    Contributor(s):: Seo, T., Sato, S., Kosaka, K., Sakamoto, N., Tokumoto, K., Katoh, K.

    16 artificially reared Japanese Black calves were divided into 6 groups: offered a dummy teat or not; given short or long cut hay; and housed individually or in a group. Grooming as common displacement behaviour and physiological stress indicators such as plasma ACTH and cortisol concentration...

  17. Effect of cholecystokinin receptor antagonists on voluntary food intake in chickens

    Contributor(s):: Rodriguez-Sinovas, A., Manteca, X., Fernandez, A. G., Fernandez, E., Gonalons, E.

    The effect of cholecystokinin (CCK) receptor antagonists (L-364718 and L-365260) and of diazepam on voluntary feed intake in chickens was studied. L-365260 significantly increased cumulative feed intake at 30 and 60 min, whereas L-364718 had no effect. Diazepam also increased feed intake at 30...

  18. Effects of castration on fear reactions of male sheep

    Contributor(s):: Vandenheede, M., Bouissou, M. F.

    The reactions of 10 rams and 10 wethers (castrated at 3 months of age) were measured under situations reported to induce fear in sheep. The tests were carried out at 14 months of age and involved isolation from conspecifics, surprise effect, and presence of a human. Fearfulness scores were...

  19. 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)...

  20. Evaluation of plasma cortisol levels and behavior in dogs wearing bark control collars

    Contributor(s):: Steiss, J. E., Schaffer, C., Ahmad, H. A., Voith, V. L.

    On wk -1, 24 healthy mixed breed kennel dogs were screened by physical examination, complete blood count, serum biochemistry, and plasma cortisol measurement. Dogs were tested to ensure they barked at an unfamiliar dog. Dogs were randomly assigned to control, electronic bark collar or lemon spray...