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  1. Behavioural characteristics of two dairy breeds of cows selected ( Herens ) or not ( Brune des Alpes ) for fighting and dominance ability

    Contributor(s):: Plusquellec, P., Bouissou, M. F.

    Two breeds of dairy cattle, one selected for intra-specific fighting and dominance ability (Herens, H), the other not selected for this behavioural trait (Brune des Alpes, BA), submitted to the same management techniques, were compared with respect to their social behaviour (dominance, agonistic...

  2. Behavioural variation in cultivated juvenile Atlantic cod (Gadus morhua L.) in relation to stocking density and size disparity

    | Contributor(s):: Uglem, I., Kjorsvik, E., Gruven, K., Lamberg, A.

    The aim of this study was to examine the behaviour and activity of Atlantic cod (Gadus morhua) juveniles (~65-120 mm total length) in relation to varying stocking density (~500-2000 fish per m3) and size disparity under both experimental and commercial hatchery conditions. This was done by...

  3. Cannibalism in juvenile blue-swimmer crabs Portunus pelagicus (Linnaeus, 1766): effects of body size, moult stage and refuge availability

    | Contributor(s):: Marshall, S., Warburton, K., Paterson, B., Mann, D.

    Factors influencing the rate of cannibalism in juvenile blue-swimmer crabs Portunus pelagicus were investigated under controlled conditions using time-lapse video recordings. This study was undertaken to improve blue-swimmer crab culture and experimentally addressed (1) prey vulnerability (2)...

  4. Consistency of individual behavioural characteristics of dairy cows in their home pen

    | Contributor(s):: Schrader, L.

    The aim of this study was to identify reliable individual behavioural characteristics of dairy cows based on aspects of their spontaneous behaviour and their reactions towards behavioural tests performed in their home pen. The parameters measured were supposed to reflect how easily the behaviour...

  5. 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...

  6. 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...

  7. 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...

  8. 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...

  9. 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...

  10. 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)...

  11. 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...

  12. 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...

  13. 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....

  14. 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...

  15. 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...

  16. 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...

  17. 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...

  18. 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....

  19. 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...

  20. 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)...