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  1. Nursing behaviour in lactating sows kept in isolation, in acoustic and visual contact

    Contributor(s):: Šilerová, Jitka, Špinka, Marek, Neuhauserová, Kristýna

    Synchronization of nursings occurs between domestic lactating sows housed in one room. This study tested experimentally whether acoustic contact without any possibility to see other sows is sufficient for a high level of nursing synchronization. Secondly, the study investigated whether the...

  2. Severe intragroup aggressions in captive common marmosets ( Callithrix jacchus )

    Contributor(s):: Filippis, B. de, Chiarotti, F., Vitale, A.

    Members of captive colonies of common marmosets (Callithrix jacchus), a small New World primate, can occasionally be victims of repeated, and potentially fatal, attacks by a family-mate. This study examined the records of a colony, looking for past instances of such aggressions. The aim was to...

  3. Evaluation of association between retention in the home and attendance at puppy socialization classes

    Contributor(s):: Duxbury, M. M., Jackson, J. A., Line, S. W., Anderson, R. K.

    Objective: To evaluate associations between retention of dogs in their adoptive homes and attendance at puppy socialization classes and other factors. Design: Epidemiological survey. Animals: 248 adult dogs that were adopted as puppies from a humane society. Procedure: Owners completed...

  4. Aggression and social spacing in light horse ( Equus caballus ) mares and foals

    Contributor(s):: Weeks, J. W., Crowell-Davis, S. L., Caudle, A. B., Heusner, G. L.

    Aggression and social spacing were studied in 14 light horse mares and their foals living at pasture. Focal samples were collected on each mare-foal dyad for 6 to 10.5 h from 2 months of foal age until weaning at approximately 4 months of age. Observations on foals continued until approximately 6...

  5. How important is social facilitation for dustbathing in laying hens?

    Contributor(s):: Olsson, I. A. S., Duncan, I. J. H., Keeling, L. J., Widowski, T. M.

    Hens in a group usually synchronize dust bathing, such that when one hen starts to dust bathe she will often be joined by others. The sight of another hen dust bathing could thus possibly act as a stimulus increasing motivation for dust bathing, with important implications for hens in furnished...

  6. Implications of coping characteristics and social status for welfare and production of paired growing gilts

    Contributor(s):: Ruis, M. A. W., Brake, J. H. A. te, Engel, B., Buist, W. G., Blokhuis, H. J., Koolhaas, J. M.

    This paper considers the question whether knowledge on individual coping characteristics of growing pigs may be used to improve welfare and production after mixing. Gilts with either reactive or proactive coping characteristics were identified according to behavioural resistance in a backtest,...

  7. Social discrimination in lambs: persistence and scope

    Contributor(s):: Ligout, S., Porter, R. H., Bon, R.

    Social recognition among familiar unrelated lambs was assessed in a series of tests. Lambs (12 pairs of twins) and their mothers were housed together in small groups for 1 week (Original groups; O) then reorganized into new groupings (Recent-groups; R) for the remainder of the experiment. During...

  8. Effects of regrouping on the individual behavioural characteristics of pigs

    Contributor(s):: Hayne, S. M., Gonyou, H. W.

    The behaviour of an animal is a combination of that which is inherited and that which is influenced by the environment. This study was conducted to determine a means for assessing and distinguishing individuals based on behavioural characteristics and to better understand the environmental impact...

  9. Effects of social facilitation for locating feeding sites by cattle in an eight-arm radial maze

    Contributor(s):: Bailey, D. W., Howery, L. D., Boss, D. L.

    A study was conducted in an eight-arm radial maze to determine if cattle with various foraging experiences could facilitate location of feeding sites by other cattle. Heifers assigned as "followers" (n=24) were initially trained to expect straw at the end of each arm. Initial training of heifers...

  10. Grouping and social preferences in calves, heifers and cows. (Special Issue: Behaviour and welfare of cattle)

    Contributor(s):: Boe, K. E., Faerevik, G.

    In order to improve animal welfare, a growing number of calves, heifers and dairy cows are reared in loose housing systems. However, (re)grouping unfamiliar animals may result in aggressive interactions and distress, especially for low ranked animals. Grouping of unfamiliar animals is found to...

  11. The effects of weight asymmetry and resource distribution on aggression in groups of unacquainted pigs

    Contributor(s):: Andersen, I. L., Andenaes, H., Boe, K. E., Jensen, P., Bakken, M.

    The relationship between weight asymmetry and aggression when mixing groups of unacquainted pigs in two different environments was investigated. Ten groups of 4 female (Landrace x Yorkshire), unacquainted pigs with a weight asymmetry of 3.1 +or- 0.2 kg (mean weight: 16.6 +or- 0.6 kg) between each...

  12. A technique in the study of aggregative behaviour of sheep

    Contributor(s):: Grassia, A.

  13. An ethogram of social interaction patterns in group-housed dry sows

    Contributor(s):: Jensen, P.

    A total of 17 dry sows, in three groups, were observed for a total time of 70 hours, equally spread out between 06.00 and 18.00 h. The ten main interaction patterns observed were: parallel pressing, inverse parallel pressing, head-to-head knock, head-to-body knock, levering, nose-to-nose,...

  14. Behavioral patterns of domestic sheep and their relationship to coyote predation

    Contributor(s):: Gluesing, E. A., Balph, D. F., Knowlton, F. F.

  15. Changes in activity, spatial pattern and social behavior in calves after grouping

    Contributor(s):: Kondo, S., Kawakami, N., Kohama, H., Nishino, S.

    Twelve 5 month-old Holstein steers, reared alone from 1 week of age, were divided into 2 groups of 6 calves each: Groups A and B. Calves in Group A were penned together in a 14.4 x 28.8 pen, and the position and behaviour of individuals were observed throughout a continuous 153 hr period at 15...

  16. Circadian behaviour, including thermoregulatory activities, in feedlot lambs

    Contributor(s):: Shreffler, C., Hohenboken, W.

  17. 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...

  18. Effect of familiarity with each other and breed on the spatial behaviour of sheep in an open field

    Contributor(s):: Winfield, C. G., Syme, G. J., Pearson, A. J.

  19. Ethogram of agonistic behaviour for Thoroughbred horses

    Contributor(s):: Arnold, G. W., Grassia, A.

  20. Face-fly pest intensity, fly-avoidance behavior (bunching) and grazing time in Holstein heifers

    Contributor(s):: Schmidtmann, E. T., Valla, M. E.

    In field studies in New York State in 1978-79, the relationship between feeding by adults of Musca autumnalis Deg., and fly-avoidance behaviour (bunching) and grazing time of heifers was examined in herds that were either exposed to the ambient pest intensity levels or treated with permethrin...