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  1. Agonistic and sex-mimicking behaviours as related to rank proximity in rams ( Ovis aries )

    Contributor(s):: Zenchak, J. J., Schein, M. W.

  2. Agonistic behaviour, responses to a novel object and some aspects of maintenance behaviour in feral-strain and domestic chickens

    Contributor(s):: Rose, K. M., Wodzicka-Tomaszewska, M., Cumming, R. B.

    Feral-strain fowl, bred from birds captured on North-West Island (24 degrees S, 150 degrees E), were compared with domestic chickens hatched and raised under similar conditions. There were many similarities between the feral and domestic fowl in behaviour, but there were also many differences...

  3. Control of excessive aggressive disturbance in a heterogeneous troop of rhesus monkeys

    Contributor(s):: Reinhardt, V., Reinhardt, A., Eisele, S., Houser, D., Wolf, J.

  4. Determination of dominance-subordinance relationships among beef heifers in a dominance tube

    Contributor(s):: Stricklin, W. R., Kautz-Scanavy, C. C., Greger, D. L.

  5. Does repeated regrouping alter the social behaviour of heifers?

    Contributor(s):: Raussi, S., Boissy, A., Delval, E., Pradel, P., Kaihilahti, J., Veissier, I.

    Regrouping of cattle according to age, live weight or production stage is a common practice on farms. Our study aimed at determining how repeated regrouping modifies the social behaviour of dairy heifers, and more specifically if dominance relationships are formed more rapidly when animals become...

  6. Dominance, age and weight in American bison males (Bison bison) during non-rut in semi-natural conditions

    | Contributor(s):: Roden, C., Vervaecke, H., Elsacker, L. van

    In the wild, male American bison (Bison bison) aggregate only during the breeding season or rut with female herds to reproduce. During the non-rut, they form bachelor groups. Very little is known about dominance structures in these bachelor herds. In this report, we evaluate social dominance in...

  7. Effects of short- and long-term changes in spatial density on the social behaviour of captive chimpanzees (Pan troglodytes)

    | Contributor(s):: Videan, E. N., Fritz, J.

    The constraints of captivity may often require non-human primates to experience restrictions in space for both long- and short-term periods of time. The tension-reduction model predicts that great apes should increase affiliative behaviours and decrease aggressive behaviours as a coping...

  8. Effects of space allowance on the welfare of dry sows kept in dynamic groups and fed with an electronic sow feeder

    | Contributor(s):: Remience, V., Wavreille, J., Canart, B., Meunier-Salaun, M. C., Prunier, A., Bartiaux-Thill, N., Nicks, B., Vandenheede, M.

    The minimal legal space allowance for grouped pregnant sows in the EU is 2.25 m2/sow. The effect of higher space per animal on agonistic behaviour and social stress of animals living in dynamic groups is not known. Two groups of 34 pregnant Belgian Landrace sows were housed in two pens of...

  9. Effects of visual cover on farmed red deer behaviour

    | Contributor(s):: Whittington, C. J., Chamove, A. S.

    The behaviour of 20 female red deer in a paddock with no visual cover was observed for 2 weeks. Cover, consisting of 2 shade cloth barriers and hanging plastic strips, was placed in one half of the paddock and the behaviour observed. After replication in a 2nd paddock in reversed order, it was...

  10. Frequencies of agonistic behaviours as measures of aggression in chickens: a factor analysis

    | Contributor(s):: Rushen, J.

  11. Playing and fighting by piglets around weaning on farms, employing individual or group housing of lactating sows

    | Contributor(s):: Silerova, J., Spinka, M., Sarova, R., Algers, B.

    In the pig industry, piglets are weaned earlier than in nature. Early weaning has an impact on piglet growth and feeding behaviour, but this may differ, apart from the weaning age, according to the housing environment. Piglets from sow group housing systems (GH), where several litters and sows...

  12. Social dominance in farmed red deer stags

    | Contributor(s):: Suttie, J. M.

  13. Social dominance of female dairy goats influences the dynamics of gastrointestinal parasite eggs

    | Contributor(s):: Ungerfeld, R., Correa, O.

    In ruminants, social hierarchies determine an unequal access to resources, such as food consumption, individuals from the other gender, or shade. Related to this, physiological status is associated with the social rank, resulting in differences in reproductive success, milk yield, or health...

  14. The impact of group size on damaging behaviours, aggression, fear and stress in farm animals.

    | Contributor(s):: Rodenburg, T. B., Koene, P.

    The aim of this review is to discuss the impact of group size on damaging behaviours, aggression, fear and stress in farm animals and to identify housing- and management options that can help to reduce problems caused by suboptimal group sizes. Increasing group size was found to increase the risk...

  15. The influence of weaning age on post-mixing agonistic interactions in growing pigs

    | Contributor(s):: Yuan, Y., Jansen, J., Charles, D., Zanella, A. J.

    The effects of differences in weaning age on agonistic interactions between pigs after regrouping were investigated, studying 47 piglets from six litters weaned either between 9 and 12 days of age (EW, n=24) or between 21 and 23 days of age (CW, n=23). At 9 weeks of age, both EW and CW animals...

  16. A note on yearling horse ingestive and agonistic behaviours in three concentrate feeding systems

    | Contributor(s):: Motch, S. M., Harpster, H. W., Ralston, S., Ostiguy, N., Diehl, N. K.

    The objective of this study was to compare behaviours of yearling horses fed concentrates under each of three management systems. Over two consecutive years, 16 yearling horses (n=8/year; 4 fillies, 4 geldings, full siblings between years) were observed over a 60-day trial period/year at 15:30 h...

  17. Agonistic behaviour of free-ranging dogs ( Canis familiaris ) in relation to season, sex and age

    | Contributor(s):: Pal, S. K., Ghosh, B., Roy, S.

    Observations on the agonistic behaviour of 12 free-ranging dogs from 2 neighbouring groups were recorded in Katwa town, India. Both intra- and inter-group agonistic encounters were recorded for 4 h/day from March 1995 to February 1996. Agonistic encounters were more common between inter- than...

  18. Agonistic ethogram of the equid bachelor band

    | Contributor(s):: McDonnell, S. M., Haviland, J. C. S.

    An ethogram of agonistic and related behaviours among equid bachelor band members was developed. Several key studies on equids were reviewed to derive a preliminary inventory of specific behaviours to be included in the ethogram. A bachelor band of domestic pony stallions pastured together was...

  19. An evaluation of the effect of operant feeders on welfare of hens maintained on litter

    | Contributor(s):: Lindberg, A. C., Nicol, C. J.

    Operant feeding was evaluated as a potential method for preventing feather pecking in laying hens. It was hoped to reduce feather pecking by redirecting pecking from feathers to operant feeders. The first experiment ascertained that no training was required for hens to use operant feeders and...

  20. Dominance and neophobia in coyote ( Canis latrans ) breeding pairs

    | Contributor(s):: Mettler, A. E., Shivik, J. A.

    Previous research suggests that within social animals, subordinate individuals are less neophobic than dominant individuals. We investigated the effect of social status on neophobic responses using 10 captive coyote breeding pairs. Social status was determined from observations of feeding...