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  1. 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...

  2. A comparison of the behaviour of domestic chicks reared with or without a hen in enriched pens

    Contributor(s):: Roden, C., Wechsler, B.

    The presence of a hen and the incidence of feather pecking in laying hen chicks (white 'Lohman Selected Leghorn' hybrids) was investigated. Groups of 8 chicks were reared with a hen (5 groups) or without a hen (7 groups) in enriched pens over the first 8 weeks after hatching. There was a...

  3. 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...

  4. A proposition for an updated behavioural characterization of the oestrus period in dairy cows

    Contributor(s):: Kerbrat, S., Disenhaus, C.

    In high-yielding dairy herds, the difficulty associated with successfully detecting oestrus is a problem that limits the reproductive performance of the herd. Traditionally, the period when the cow stands to be mounted is taken as the oestrus period. Housing and management factors such as the use...

  5. A review of shark agonistic displays: Comparison of 2 display features and implications for shark-human interactions

    Contributor(s):: Martin, R. Aidan

  6. Aggression and social spacing in light horse ( Equus caballus ) mares and foals

    Contributor(s):: Weeks, J. W., Crowell-Davis, S. L., Caudle, A. B., Heusner, G. L.

    Aggression and social spacing were studied in 14 light horse mares and their foals living at pasture. Focal samples were collected on each mare-foal dyad for 6 to 10.5 h from 2 months of foal age until weaning at approximately 4 months of age. Observations on foals continued until approximately 6...

  7. Aggressive behaviour and its relation to oviposition in the domestic fowl

    Contributor(s):: Hughes, B. O.

    Hens in battery cages behave differently from those housed in pens. Laying hens of two strains were housed in cages or pens and the incidence of aggression before and after laying was studied. Little aggression was seen in stable groups, so a strange bird was introduced to stimulate aggressive...

  8. Agonistic and mating behavior of adult chickens modified by social and physical environments

    Contributor(s):: Craig, J. V., Bhagwat, A. L.

    Agonistic and mating behaviour in 48 flocks of adult White Leghorn fowls was observed for 8 wk. A factorial experimental design allowed evaluation of behaviour as affected by genetic strain, presence or absence of males , age group (initial ages of 32 or 48 wk), and less crowded floor pens...

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

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

  10. Agonistic behavior and social organization in a herd of goats as affected by the introduction of non-members

    Contributor(s):: Addison, W. E., Baker, E.

    The purpose of the project was (1) to identify the pattern of social organization in a herd of goats, and (2) to study the effects of introducing two "non-members" (one male and one female) into an established group. A nearly perfect linear hierarchy was found in the original group. As expected,...

  11. Agonistic behaviour after mixing in pigs under commercial farm conditions

    Contributor(s):: Stukenborg, Andreas, Traulsen, Imke, Puppe, Birger, Presuhn, Ulrich, Krieter, Joachim

    The aim of the study was to investigate agonistic behaviour of pigs after regrouping pigs under commercial sow farm conditions. The behavioural patterns were observed over a 48-h period, directly after weaning (PIG-28; n=647) and 40 days later (growing pigs, PIG-68; n=224). Agonistic interactions...

  12. Agonistic behaviour and feather pecking in single-sexed and mixed groups of laying hens

    Contributor(s):: Oden, K., Vestergaard, K. S., Algers, B.

    The effects of the presence of males on female aggressiveness and feather pecking in groups of about 500 laying hens housed in an aviary system were studied. In all, 10 groups of ISA Brown laying hens were observed at 21, 35, 45 and 55 weeks of age on 2 farms, during 2 years. In the second year,...

  13. Agonistic behaviour associated with orphan bison ( Bison bison L.) calves released into a mixed resident population

    Contributor(s):: Coppedge, B. R., Carter, T. S., Shaw, J. H., Hamilton, R. G.

    Aggressive interactions of 43 bison calves (10 months old) released motherless into a 288-member resident bison population of mixed composition were observed. Based on expected observations of aggressive interactions from chi superscript 2 analyses, these 'orphan' calves were recipients of...

  14. Agonistic behaviour in domestic fowls transferred between cages and pens

    Contributor(s):: Hughes, B. O., Black, A. J.

  15. 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...

  16. 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...

  17. 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...

  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. Agonistic interactions and physiological reactions of top- and bottom-ranking pigs confronted with a familiar and an unfamiliar group: preliminary results

    Contributor(s):: Otten, W., Puppe, B., Stabenow, B., Kanitz, E., Schon, P. C., Brussow, K. P., Nurnberg, G.

    Four trials were carried out, where in each trial during a selection test 2 groups of growing pigs (12 weeks old) with 9 animals each were randomly formed. After a week, the top (TR) and bottom (BR) ranking pig from each group was isolated and kept under single housing conditions. At the age of...

  20. Alternative housing for sows and litters. Part 4. Effects of sow-controlled housing combined with a communal piglet area on pre- and post-weaning behaviour and performance

    Contributor(s):: Weary, D. M., Pajor, E. A., Bonenfant, M., Fraser, D., Kramer, D. L.

    Previous experimental work has shown modest and variable production and welfare benefits for the lactating sow and piglets when sows are allowed to separate themselves temporarily from their piglets, or when piglets have access to a communal creep area sufficiently attractive that they spend...