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  1. Familiarity and group size affect emotional stress in Japanese Black heifers

    Contributor(s):: Takeda, K., Sato, S., Sugawara, K.

    We compared behavioural and cardiac responses to emotional stresses between familiar and unfamiliar heifers in groups of two or five. Fourteen Japanese Black heifers were divided into two experimental groups of two individuals (F2) and two groups of five individuals (F5) that were familiar with...

  2. Feeding, resting and social behaviour in ewes housed in two different group sizes

    Contributor(s):: Jorgensen, G. H. M., Andersen, I. L., Berg, S., Boe, K. E.

    The aim of this experiment was to investigate the effects of increased group size on eating- and resting behaviour, aggression and feed intake in housed ewes. During an initial period of 14 days 36 adult (2-6 years old) ewes of the domestic Norwegian Dala breed were divided into four groups of 9....

  3. Group size and perching behaviour in young domestic fowl

    Contributor(s):: Newberry, R. C., Estevez, I., Keeling, L. J.

    To test the hypothesis that young domestic fowl perform less perch-related antipredator behaviour with increasing group size, White Leghorn pullets were reared in 4 replicate groups of 15, 30, 60 and 120 at a constant density of 5 birds/m2. Each pen contained perches 20, 40 and 60 cm above the...

  4. Group sizes and resting locations of free range pigs when grazing in a natural environment

    Contributor(s):: Rodriguez-Estevez, V., Sanchez-Rodriguez, M., Gomez-Castro, A. G., Edwards, S. A.

    A herd of 86 Iberian pigs aged 13+or-0.5 months and with an average live weight of 110+or-1.3 kg at the start of the study was followed to monitor their social organisation (spontaneous group size: GS) and resting preferences when free ranging on natural pastures in a dehesa of evergreen oaks...

  5. Human-cattle interactions in group housing. (Special Issue: Behaviour and welfare of cattle)

    Contributor(s):: Raussi, S.

    In traditional European tie stall barns the stockperson has close interaction with the cattle several times a day. New barns are, however, mostly loose housing units where the animals are group housed and normally have space to evade people. As group housed cattle can be less habituated to...

  6. Interdependence of welfare outcome measures and potential confounding factors on finishing pig farms

    Contributor(s):: Mullan, S., Edwards, S. A., Butterworth, A., Whay, H. R., Main, D. C. J.

    The factors influencing the observed prevalence of some welfare outcome measures were investigated as part of a larger project examining the feasibility and benefits of incorporating on-farm welfare outcome assessments into UK Pig Farm Assurance Schemes. All finishing pigs (>40 kg) on six farms...

  7. Short-term and long-term movement patterns in confined environments by domestic fowl: influence of group size and enclosure size

    Contributor(s):: Mallapur, A., Miller, C., Christman, M. C., Estevez, I.

    The study of animal movement and space use plays an integral role in understanding the behaviour and habitat selection of free-ranging and captive animal populations. This investigation could lead to changes in facility design to better suit the biological needs of captive animals. The aim of...

  8. The interaction of liveweight and the degree of competition on drinking behaviour in growing pigs at different group sizes

    Contributor(s):: Turner, S. P., Sinclair, A. G., Edwards, S. A.

    If competition for access to a limited resource is substantial, access to that resource may be allocated disproportionately to different members of a group. Priority may be based on a dominance hierarchy, or on physical characteristics, such as weight. The pattern of drinking behaviour was...

  9. The number of farm mates influences social and maintenance behaviours of Japanese black cows in a communal pasture

    Contributor(s):: Takeda, K., Sato, S., Sugawara, K.

    A study was performed to investigate optimal group size in cattle in communal pastures where cattle from various farms are turned out: (i) to ascertain if cows derived from each farm form an affiliative group and (ii) to investigate the effect of the number of farm mates on social and maintenance...

  10. The social and feeding behaviour of growing pigs in deep-litter, large group housing systems

    Contributor(s):: Morrison, R. S., Hemsworth, P. H., Cronin, G. M., Campbell, R. G.

    Two studies compared the social and feeding behaviour of Large White x Landrace entire male (non-castrated) growing pigs housed in deep-litter, large group and conventional housing systems. In Study 1, an ethogram of behaviour was developed. The pigs were housed at 1 m2 per pig (200 pigs per pen)...

  11. Vocalisation in chicks ( Gallus gallus dom.) during stepwise social isolation

    Contributor(s):: Marx, G., Leppelt, J., Ellendorff, F.

    Despite attempts to relate vocalization of animals to their welfare status, very little is known in farm animals and in precocious birds. We analysed vocal expressions of 50 chicks during step by step social isolation. 91.20% of the recorded vocalisations (n=21 583 calls) consisted of four main...

  12. Welfare implications of captive primate population management: behavioural and psycho-social effects of female-based contraception, oestrus and male removal in hamadryas baboons ( Papio hamadryas ). (Special issue: Primates in zoos)

    Contributor(s):: Plowman, A. B., Jordan, N. R., Anderson, N., Condon, E., Fraser, O.

    In response to overpopulation, management actions were taken over a 5-year period to reduce group size and slow the population growth rate of hamadryas baboons at Paignton Zoo Environmental Park. Management involved three planned removals of several individuals and implantation of all adult...

  13. A meta-analysis of the combined effect of housing and environmental enrichment characteristics on the behaviour and performance of pigs

    Contributor(s):: Averos, X., Brossard, L., Dourmad, J. Y., Greef, K. H. de, Edge, H. L., Edwards, S. A., Meunier-Salaun, M. C.

    To quantify the combined effect of housing conditions and environmental enrichment on the behaviour and performance of pigs, a meta-analysis was performed using information from 45 experiments in 42 published manuscripts. Multiple regression models were applied to evaluate the effects of space...

  14. A note on the behavior of feral cattle in the Chihuahuan Desert of Mexico

    Contributor(s):: Hernandez, L., Barral, H., Halffter, G., Colon, S. S.

    Habitat use and behaviour of three feral cows were compared to three domestic cows in the Mapimi Biosphere Reserve, Chihuahuan Desert, where approximately 1000 feral cows were found on 151 000 ha. Feral cattle were found to represent an ecotype adapted to desert conditions. In comparison with...

  15. Decreasing aggression with increasing group size in young domestic fowl

    Contributor(s):: Estevez, I., Keeling, L. J., Newberry, R. C.

    We hypothesized that whereas domestic fowl in small groups establish a dominance hierarchy through aggressive interactions those in large groups adopt a low-aggression (tolerant) social strategy. To test this hypothesis, we examined the effect of group size on the ontogeny of aggressive behaviour...

  16. Interactions between social and feeding motivations on the grazing behaviour of herbivores: sheep more easily split into subgroups with familiar peers

    Contributor(s):: Boissy, A., Dumont, B.

    Social grouping tendencies are known to influence the grazing behaviour of domestic herbivores. Here, we investigate how the strength of social bonds in a flock influences the choice of grazing location in sheep. Eight experimental ewes of INRA 401 breed grazed in plots in which a preferred...

  17. Relationship between feather pecking and ground pecking in laying hens and the effect of group size

    Contributor(s):: Bilcik, B., Keeling, L. J.

    The aim of this experiment was to study the relationship between feather pecking and ground pecking in laying hens and the effect of group size on feather pecking behaviour. 900 Hisex White hens were kept in floor pens in group sizes of 15, 30, 60 and 120 birds, each with four replicates....

  18. Social discrimination and aggression by laying hens in large groups: from peck orders to social tolerance

    Contributor(s):: D'Eath, R. B., Keeling, L. J.

    Domestic fowl (Gallus gallus domesticus) naturally live in small groups, with a dominance hierarchy (pecking order) which is most likely based on establishment fights, followed by remembered assessment of status involving individual recognition. In larger groups, this system is thought to...

  19. Spatial distribution and behaviour of laying hens housed in an alternative system

    Contributor(s):: Channing, C. E., Hughes, B. O., Walker, A. W.

    The spatial distribution and behaviour of perchery housed laying hens were compared at a constant stocking density (18.5 birds/m2) in eight pens with colonies of five different sizes (323 birds (N=1), 374 birds (N=2), 431 birds (N=2), 572 birds (N=1) and 912 birds (N=2)). The birds were placed in...

  20. Using artificial cover to reduce aggression and disturbances in domestic fowl

    Contributor(s):: Cornetto, T., Estevez, I., Douglass, L. W.

    Differential use of space by domestic fowl may contribute to unnecessary aggressive interactions and disturbances among birds. Greater use of space near pen walls results in aggregations of birds around peripheral regions, leaving central areas unoccupied. These open areas provide opportunities...