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  1. 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...

  2. 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)...

  3. 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...

  4. 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...

  5. 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....

  6. 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...

  7. 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...

  8. 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...

  9. 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...

  10. 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....

  11. 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...

  12. 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)...

  13. 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...

  14. 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...

  15. Assessing dominance in sheep in a competitive situation: level of motivation and test duration

    Contributor(s):: Erhard, H. W., Fabrega, E., Stanworth, G., Elston, D. A.

    The dominance structure in an established group of sheep is often difficult to determine in the field, because of the low frequency of agonistic interactions, often resulting in some pairs of animals not interacting at all in the observation period. A solution to this problem is to test each pair...

  16. Behavior of picketed circus elephants

    Contributor(s):: Friend, T. H.

    The behaviour of 14 female Asian (Elephas maximus) and 3 female African (Loxodonta africana) elephants who performed 2 shows each day with a circus that travelled to a new location (40 to 250 km from the previous day's lot) daily, was studied. When not performing or working, the elephants were...

  17. Behaviour of Zebu and crossbred cows in restricted suckling groups. (Special issue: Suckling)

    Contributor(s):: Das, S. M., Redbo, I., Wiktorsson, H.

    The aim of this study was to investigate whether Zebu (Bos indicus) and crossbred (Bos indicus x Bos taurus) cows differ in maternal related behaviour during restricted group suckling. The behaviours of 20 Zebu and 16 crossbred cows were recorded during two 30-min sessions each day after milking...

  18. Differences in skeletal and ornamental traits between laying hen cannibals, victims and bystanders

    Contributor(s):: Cloutier, S., Newberry, R. C.

    The size of skeletal and ornamental traits, and asymmetries in bilateral skeletal traits, between victims of cannibalism, cannibals and bystanders within small groups of caged female White Leghorns at the time of cannibalistic attacks (i.e. injurious pecks resulting in bleeding) were compared. It...

  19. Dominance relationships between sows dependent on the time interval between separation and reunion

    Contributor(s):: Hoy, S., Bauer, J.

    One hundred thirty-six sows were weaned from farrowing crates into groups of eight sows of mixed origin and housed in a straw-bedded stimulation pen. The groups were transferred to individual stalls after 4 days in loose housing and artificially inseminated. After either 7 or 28 days in single...

  20. Individual aggressiveness of pigs can be measured and used to reduce aggression after mixing

    Contributor(s):: Erhard, H. W., Mendl, M., Ashley, D. D.

    189 pigs were tested for individual aggressiveness in their home pens and categorised as high- or low-aggressive (H or L) according to their attack latency. 88 of these pigs were then mixed in groups of 8, with 4 pigs from each of 2 litters. The combinations used were H/H (4H + 4H), H/L (4H + 4L)...