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Tags: Agonistic behavior + Mammals

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  1. Relationship between behavioural tests and agonistic interactions at different age levels in pigs

    Contributor(s):: Scheffler, K., Stamer, E., Traulsen, I., Krieter, J.

    Fighting among pigs is a normal behavioural pattern to establish a stable rank order. Enhanced aggressive behaviour in pigs in groups lead to increasing stress and injuries especially in mixing situations used as a common procedure in modern pig production systems. In such systems, it is usually...

  2. Effects of feeding management and group composition on agonistic behaviour of group-housed horses

    Contributor(s):: Burla, J. B., Ostertag, A., Patt, A., Bachmann, I., Hillmann, E.

    Under natural conditions, horses spend 12-18 h of a day with synchronous grazing, but for stabled horses, the amount of forage and thus duration of feed intake usually are restricted. In group-housed horses, therefore, feeding times are often situations with increased levels of agonistic...

  3. Agonistic behaviour, skin lesions and activity pattern of entire male, female and castrated male finishing pigs

    Contributor(s):: Bunger, B., Schrader, L., Schrade, H., Zacharias, B.

    Fattening of intact boars is the least invasive alternative to the detrimental welfare effects of surgical castration of piglets. However, beside problems such as boar taint the divergent agonistic and sexual behaviour of boars may impair the pigs' welfare during fattening. To evaluate the effect...

  4. Group composition for fattening entire male pigs under enriched housing conditions - influences on behaviour, injuries and boar taint compounds

    Contributor(s):: Holinger, M., Fruh, B., Hillmann, E.

    In organic farming, the production of pork from entire male pigs seems to be the most promising alternative to castration, as organic animal husbandry aims at high standards of animal welfare and elimination of mutilations. However, previous research on behaviour of entire male pigs was mostly...

  5. Head partitions at the feed barrier affect behaviour of goats

    Contributor(s):: Nordmann, E., Barth, K., Futschik, A., Palme, R., Waiblinger, S.

    Space allowance at the feeding places often forces goats to feed in close proximity, that is, less than their individual distances. In consequence, agonistic behaviour may increase as well as stress and injuries, while access to feed may decrease, especially in low-ranking goats. Partitions...

  6. Behavioural patterns established during suckling reappear when piglets are forced to form a new dominance hierarchy

    Contributor(s):: Skok, J., Prevolnik, M., Urek, T., Mesarec, N., Skorjanc, D.

    Early life experiences considerably influence the behavioural development of the animals in which the social environment plays a crucial role. Neonatal piglets experience intense social (including aggressive) interactions when compete with their littermates for the access to teats on the sow's...

  7. Effects of growth-promoting technology on feedlot cattle behavior in the 21 days before slaughter

    Contributor(s):: Stackhouse-Lawson, K. R., Tucker, C. B., Calvo-Lorenzo, M. S., Mitloehner, F. M.

    There is growing interest in the animal welfare implications of growth-promoting technology used in feedlot cattle, namely hormonal implants, ionophores, antibiotics and β 2-adrenergic agonists. Previous studies have focused on the effects of implants on aggression, but little work has...

  8. Evidence of competition for nest sites by laying hens in large furnished cages

    Contributor(s):: Hunniford, M. E., Torrey, S., Bedecarrats, G., Duncan, I. J. H., Widowski, T. M.

    Furnished cages are designed to accommodate behaviour considered important to laying hens, particularly nesting behaviour. Few researchers have studied the degree of competition for nest sites or the extent to which the amount of nest space affects nesting behaviour in large furnished cages. We...

  9. Are "pit bulls" different? An analysis of the pit bull terrier controversy (Commenrtary)

    Contributor(s):: Lockwood, R., Rindy, K.

    "This article reviews some of the historical, ethological, and epidemiological evidence relevant to the question of whether pit bull terriers present special animal control problems justifying unusual legislative action."

  10. Down but not out: supine postures as facilitators of play in domestic dogs

    Contributor(s):: Norman, K., Pellis, S., Barrett, L., Henzi, S. P.

    We used two sets of videotaped data of playing domestic dog dyads to determine whether rolling over during play served as a signal of submission or whether it was a combat maneuver adopted as part of an ongoing play sequence. Our results provide strong support for the latter. In the absence of...

  11. A close keeper-nonhuman animal distance does not reduce undesirable behavior in contact yard goats and sheep

    Contributor(s):: Anderson, U. S., Maple, T. L., Bloomsmith, M. A.

    This study investigated the relation between zookeeper-nonhuman animal distance and the undesirable behaviour that goats and sheep exhibited toward visitors of Zoo Atlanta's (Georgia, USA) contact yard. It hypothesized that a close distance between keeper and animal would be associated with a...

  12. Behavioral responses of silverback gorillas ( Gorilla gorilla gorilla ) to videos

    Contributor(s):: Maloney, M. A., Leighty, K. A., Kuhar, C. W., Bettinger, T. L.

    This study examined the impact of video presentations on the behavior of 4 silverback, western lowland gorillas (Gorilla gorilla gorilla). On each of 5 occasions, gorillas viewed 6 types of videos (blue screen, humans, an all-male or mixed-sex group engaged in low activity, and an all-male or...

  13. Behavior of feral horses in response to culling and GnRH immunocontraception

    Contributor(s):: Ransom, J. I., Powers, J. G., Garbe, H. M., Oehler, M. W., Sr., Nett, T. M., Baker, D. L.

    Wildlife management actions can alter fundamental behaviors of individuals and groups, which may directly impact their life history parameters in unforeseen ways. This is especially true for highly social animals because changes in one individual's behavior can cascade throughout its social...

  14. Effect of hiding places, straw and territory on aggression in group-housed rabbit does

    Contributor(s):: Rommers, J. M., Reuvekamp, B. J. F., Gunnink, H., Jong, I. C. de

    Group-housing of rabbit does may be preferred from welfare point of view. However, group-housing causes agonistic behaviour which may cause severe injuries. Severe injuries may be prevented by offering hiding places for attacked does. Providing enrichment (straw) may reduce agonistic behaviour by...

  15. Effects of restraint with or without blinds at the feed barrier on feeding and agonistic behaviour in horned and hornless goats

    Contributor(s):: Hillmann, E., Hilfiker, S., Keil, N. M.

    The strict dominance hierarchy in goats bears the risk of low-ranking goats not getting adequate access to feed, especially for goats in small groups. The aim of our study was to test the effect of restraint in headlocks with and without blinds at the feed barrier on feeding and agonistic...

  16. The effect of conspecific removal on the behaviour and physiology of pair-housed shelter dogs

    Contributor(s):: Walker, J. K., Waran, N. K., Phillips, C. J. C.

    Dogs ( Canis familiaris) are a highly social species and within a shelter environment pair-housing is recommended to prevent the stress associated with social isolation. Separation of individuals which may have formed bonds in this environment is a usual occurrence, as a result of rehoming or...

  17. The role of ethology in round pen horse training - a review

    Contributor(s):: Henshall, C., McGreevy, P. D.

    Horse training systems apparently based on the 'natural' behaviour of horses have been widely adopted in the past four decades. Round pen training (RPT) is an integral feature of many 'natural horsemanship' (NH) systems. RPT involves the training of the horse at liberty within an enclosed space...

  18. Effects of neonatal castration on social behaviour, human-animal relationship and feeding activity in finishing pigs reared in a conventional or an enriched housing

    Contributor(s):: Tallet, C., Brillouet, A., Meunier-Salaun, M. C., Paulmier, V., Guerin, C., Prunier, A.

  19. Benefits of pair housing are consistent across a diverse population of rhesus macaques. (Special Issue: The welfare of laboratory primates.)

    Contributor(s):: Baker, K. C., Bloomsmith, M. A., Oettinger, B., Neu, K., Griffis, C., Schoof, V., Maloney, M.

  20. Effect of short and long periods of separation on agonistic behaviour, injuries and stress in Herens cows kept in loose housing

    Contributor(s):: Castro, I. M. L., Gygax, L., Wechsler, B., Hauser, R.