The HABRI Foundation is calling for research proposals to investigate the health outcomes of pet ownership and/or animal-assisted activity or therapy, both for the people and the animals involved. To learn more, visit https://habri.org/grants/funding-opportunities/ close

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

Tags: Agonistic behavior

All Categories (41-60 of 163)

  1. Development of feather pecking in relation to light intensity

    Contributor(s):: Kjaer, J. B., Vestergaard, K. S.

    Medium heavy laying hens (ISA Brown) were reared on litter floor in a cross-over experiment with 4 treatments of age x light intensity: 3 or 30 lux and between 0 and 15 weeks of age and 3 or 30 lux and between 16 and 46 weeks. Feather pecking and behaviour were recorded by focal animal and time...

  2. Diurnal rhythm of feather pecking behaviour and condition of integument in four strains of loose housed laying hens

    Contributor(s):: Kjaer, J. B.

    2400 chickens from 4 commercial strains, Lohmann Selected Leghorn (LSL), Norbrid 41 (NB), Lohmann Brown (LB) and ISA Brown (ISA) were reared and kept in aviary systems. Feather pecking behaviour was recorded by time sampling from video recordings at 38 weeks of age and condition of plumage, keel...

  3. Early feather pecking as a form of social exploration: the effect of group stability on feather pecking and tonic immobility in domestic chicks

    Contributor(s):: Riedstra, B., Groothuis, T. G. G.

    In two lines of White Leghorns that differ in their propensity to feather peck, feather pecking was already present one day after hatching. A significant line difference developed within 3 days and this difference remained during the following weeks. There was no clear relationship between...

  4. Effect of mares' dominance rank on suckling behaviour in the loose housed domestic horses

    Contributor(s):: Komarkova, M., Bartosova, J., Dubcova, J.

    Suckling is a main part of maternal investment in equids. The suckling period is crucial for adequate physical as well as psychical development of the foal. The rank of the mother and her aggressiveness could be factors responsible for later reproductive or social success of the foal. We...

  5. Effects of early contact between non-littermate piglets and of the complexity of farrowing conditions on social behaviour and weight gain

    Contributor(s):: Kutzer, T., Bunger, B., Kjaer, J. B., Schrader, L.

    In this study we tested if contact possibilities between non-littermate piglets and complexity of farrowing conditions affect the pre- and post-weaning behaviour, weight gain and skin lesions of piglets. Suckling sows were either kept in a group housing system (GH), in a single pen loose housing...

  6. Effects of the introduction of single heifers or pairs of heifers into dairy-cow herds on the temporal and spatial associations of heifers and cows

    Contributor(s):: Neisen, G., Wechsler, B., Gygax, L.

    Investigations into the process of introducing heifers into dairy-cow herds may alleviate animal-welfare problems arising during social integration. The present study monitored the introduction of a single heifer and a pair of heifers known to each other on each of six dairy farms, and...

  7. Experience of moderate bedding affects behaviour of growing pigs

    Contributor(s):: Munsterhjelm, C., Peltoniemi, O. A. T., Heinonen, M., Halli, O., Karhapaa, M., Valros, A.

    Effects of early substrate-enrichment on behaviour and productivity of pigs were evaluated in a trial with four siblings as the experimental unit. Pens either were (=E) or were not (=0) moderately bedded with wood shavings and chopped straw during suckling (0-4 weeks of age), nursery (5-9 weeks)...

  8. Feather eating in layer pullets and its possible role in the aetiology of feather pecking damage

    Contributor(s):: McKeegan, D. E. F., Savory, C. J.

    Feather eating and its possible relationship with damaging pecking was examined in 144 pen-housed ISA Brown layer pullets. Collection and measurement of loose feathers in sample plots on 12 pen floors (feather were characterized as 'short' or 'long'), and examination of faecal droppings (eaten...

  9. Feed barrier design affects behaviour and physiology in goats

    Contributor(s):: Nordmann, E., Keil, N. M., Schmied-Wagner, C., Graml, C., Langbein, J., Aschwanden, J., Hof, J. von, Maschat, K., Palme, R., Waiblinger, S.

    Among other things, feed barrier design for goats can differ with regard to ease of leaving, backward view, and presence of physical separation. The aim of our study was to investigate whether the type of feed barrier influences agonistic behaviour and stress. The study involved 55 adult...

  10. Gender effects on aggression, dominance rank, and affiliative behaviors in a flock of captive adult cockatiels ( Nymphicus hollandicus )

    Contributor(s):: Seibert, L. M., Crowell-Davis, S. L.

    Agonistic and affiliative behaviours and spatial positioning were studied in a small psittacine species, N. hollandicus. Subjects studied were flock-housed breeders including 5 hens and 7 cocks. 15-minute focal animal samples were collected for the entire flock in a randomly distributed order...

  11. Individual differences in behaviour and in adrenocortical activity in beef-suckler cows

    Contributor(s):: Mulleder, C., Palme, R., Menke, C., Waiblinger, S.

    The aims of this study were to investigate the existence of individual behavioural strategies in beef-suckler cows in a stable herd, whether these strategies are related to basic activities and to adrenocortical activity, and whether they are consistent in a situation of social competition....

  12. Influence of mothering on emotional and social reactivity of domestic pullets

    Contributor(s):: Perre, Y., Wauters, A. M., Richard-Yris, M. A.

    The aim of this study was to determine whether different early mothering experiences influenced emotional and social reactivity of sub-adults and adults in domestic fowl. We compared two types of individuals: brooded and non-brooded pullets. Brooded pullets were reared by a maternal hen during...

  13. Intercat aggression: a retrospective study examining types of aggression, sexes of fighting pairs, and effectiveness of treatment

    Contributor(s):: Lindell, E. M., Erb, H. N., Houpt, K. A.

    48 cases of intercat aggression, presented to the Animal Behaviour Clinic at New York State College of Veterinary Medicine at Cornell University between 1988 and 1994, were examined retrospectively. Clients were contacted by telephone so that the outcome of the treatment programme could be...

  14. Preparing gilts for group housing by increasing their social skills

    Contributor(s):: Putten, G. van, Bure, R. G.

    384 experimental GY x DUROC hybrid gilts and 384 control gilts were used to study agonistic behaviour in group housing. The experimental animals were born in individual farrowing crates with slatted floors. They were weaned at 30 days and kept in flatdeck cages with 2 other litters in groups of 8...

  15. Resting and social behaviour of dairy heifers housed in slatted floor pens with different sized bedded lying areas

    Contributor(s):: Nielsen, L. H., Mogensen, L., Krohn, C., Hindhede, J., Sorensen, J. T.

    The hypothesis that an increase in the straw bedded resting area for group housed heifers would increase synchronization of resting behaviour and decrease aggressive and abnormal behaviour was tested. An experiment was conducted on 2 Danish commercial dairy farms with 20 Danish Friesian heifers...

  16. Space use and agonistic behaviour in relation to sex composition in large flocks of laying hens

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

    Experiments were carried out to test the hypothesis that hens in large flocks have home ranges in parts of the pen and that they form subgroups. In a tiered aviary system (density averaged 16 hens/msuperscript 2 of floor area), 8 flocks of 568+or-59 ISA Brown laying hybrids were kept in pens....

  17. The effects of surgical and chemical castration on intermale aggression, sexual behaviour and play behaviour in the male ferret ( Mustela putorius furo )

    Contributor(s):: Vinke, C. M., Deijk, R. van, Houx, B. B., Schoemaker, N. J.

    The ferret (Mustela putorius furo) has become an increasingly popular pet animal, yet little is known about their behaviour and welfare. Inter- and intra-specific aggression and the intense musky scent are the two main reasons why male ferrets are normally surgically castrated. However, it is...

  18. 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)...

  19. 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...

  20. 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...