You are here: Home / Tags / Agonistic behavior / All Categories

Tags: Agonistic behavior

All Categories (101-120 of 153)

  1. 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...

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

    Contributor(s):: Rushen, J.

  3. 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...

  4. Social dominance in farmed red deer stags

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

  5. 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...

  6. The impact of group size on damaging behaviours, aggression, fear and stress in farm animals. (Special issue: Too many, too few: the effects of group size and density in captive 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...

  7. 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...

  8. 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...

  9. 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...

  10. 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...

  11. 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...

  12. 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...

  13. Early exposure to females affects interactions between male White Leghorn chickens

    Contributor(s):: Leonard, M. L., Zanette, L., Fairfull, W.

    To examine the effect of rearing condition on White Leghorn chickens interactions were observed between pairs comprising one male reared in an all-male group (single-sex) and one male reared with females (mixed-sex). Two males one from each treatment, were placed in a neutral arena with either a...

  14. Effect of partitioning pens on aggressive behavior of pigs regrouped at weaning

    Contributor(s):: Olesen, L. S., Nygaard, C. M., Friend, T. H., Bushong, D., Knabe, D. A., Vestergaard, K. S., Vaughan, R. K.

    In 2 trials, pigs were weaned at 28.5 days of age, stratified by body weight and assigned to groups of 7 on the condition that no more than 2 pigs in any group were from the same litter. Each group was housed in nursery pens which contained or did not contain (control) a partition. The partition,...

  15. Effects of familiarity and relatedness on agonistic pair relationships in newly mixed domestic pigs

    Contributor(s):: Puppe, B.

    The effects of familiarity and relatedness on agonistic pair relationships (dyads) in different pen regions (pen area or trough area) were studied in 16 groups of newly mixed domestic pigs of similar weight (9 pigs per group) at 12 weeks of age. The agonistic interactions (AI) within 124 familiar...

  16. Effects of sex composition on fear measured as tonic immobility and vigilance behaviour in large flocks of laying hens

    Contributor(s):: Oden, K., Gunnarsson, S., Berg, C., Algers, B.

    Fear can be a damaging stressor, resulting in impaired animal welfare and poor production economy. Often fear reactions are elicited in situations that are in some way related to predator defence. As males have a guarding role, mixing the sexes might be a way of reducing fear in large groups of...

  17. Effects of social and environmental familiarity on group preferences and spacing behaviour in laying hens

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

    The effects of social and environmental familiarity on spacing behaviour were investigated in litter-kept hens. In Experiment 1, social familiarity affected spacing, with birds which were familiar with each other spreading evenly over the available area as evidenced by a significantly lower...

  18. Feeding behaviour of outdoor sows: the effects of diet quantity and type

    Contributor(s):: Martin, J. E., Edwards, S. A.

    To investigate the consequences of group feeding out-doors, 6 groups of 6 pregnant sows were subject to 3 feeding treatments in a replicated Latin square design, with 2-week periods. A concentrate diet, in the form of rolls of 16 mm diameter, was fed once daily on the ground in a 12-m feed line,...

  19. Male rank order, space use and female attachment in large flocks of laying hens

    Contributor(s):: Oden, K., Berg, C., Gunnarsson, S., Algers, B.

    In a flock of 3500 modern laying hens with males present at an average ratio of 1:190 females and a density of 7 birds/m2, male dominance, space use and eventual female attachment were studied by direct observations of the males and a total of 232 female focal birds. Territorial, sexual and...

  20. The development of aggressive behavior in male broiler chicks: a comparison with laying-type males and the effect of feed restriction

    Contributor(s):: Mench, J. A.

    Experiments were designed firstly to investigate whether selection for growth has modulated the development of aggressive behaviour in male broiler chicks, and secondly to determine the influence of feed restriction on aggression. In the first experiment, broiler males were compared with males...