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...
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...
Network characteristics and development of social structure of agonistic behaviour in pigs across three repeated rehousing and mixing events
Contributor(s):: Buttner, K., Scheffler, K., Czycholl, I., Krieter, J.
In commercial pig production, the mixing of unacquainted pigs is a standard procedure which leads to agonistic interactions with a wide range of individual pig behaviour. A reduction in these agonistic interactions positively affects animal health, welfare aspects and production parameters. With...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
Out of sight or in too deep: effect of visual barriers and water depth on agonistic behaviour and growth in hatchling saltwater crocodiles ( Crocodylus porosus)
Contributor(s):: Brien, M. L., Gienger, C. M., Webb, G. J., McGuinness, K., Christian, K. A.
This study tests the role of visual barriers and water depth on levels of agonistic behaviour and growth in hatchling Crocodylus porosus within the first 3 weeks of life. Ninety-six individuals from four separate clutches hatched over 2 days were divided across three treatments containing two...
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...
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...
Pain-suppressed behaviors in the red-tailed hawk ( Buteo jamaicensis)
Contributor(s):: Mazor-Thomas, J. E., Mann, P. E., Karas, A. Z., Tseng, F.
Our ability to provide analgesia in wild and exotic patients is hampered by a lack of species-specific information on effective drugs and protocols. One contributing factor is the difficulty of applying data from traditional laboratory tests of nociception to clinical conditions frequently...
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.
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.
Dominance and growth of Diplodus sargus (Pisces: Sparidae) in small captive groups
Contributor(s):: Goncalves, A. R., Sousa, L. C. de, Almada, V. C.