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  1. Stabilization of social hierarchy in dairy cows

    Contributor(s):: Kondo, S., Hurnik, J. F.

    The main objective of this experiment was to study the development of social hierarchy, and the underlying frequencies of physical and non-physical agonistic interactions in a herd of dairy cows. 32 lactating Holstein cows were randomly allocated to form 2 groups of 16 animals each (Groups A and...

  2. The behaviour of young Friesian bulls during social re-grouping at an abattoir. Influence of an overhead electrified wire grid

    Contributor(s):: Kenny, F. J., Tarrant, P. V.

    The response of young Friesian bulls to social re-grouping, and the use of an overhead electrified grid to control their behaviour, was investigated in two trials at an abattoir. Behaviour was observed continuously for 3 h after social re-grouping. Mounting was the most common behaviour during...

  3. The effect of group size and space allowance on the agonistic and spacing behavior of cattle

    Contributor(s):: Kondo, S., Sekine, J., Okubo, M., Asahida, Y.

    The number of agonistic encounters per hour in a group and the mean distance to the nearest neighbour in a group (m) were analysed by a multiple regression on the group size (number of animals in a group) and space allowance (msuperscript 3 per animal) in each group of calves (6-13 months old,...

  4. An investigation of the effect of environmental enrichment and space allowance on the behaviour and production of growing pigs

    Contributor(s):: Beattie, V. E., Walker, N., Sneddon, I. A.

    Newly weaned 6-week-old pigs in groups of 6 littermates were placed in enriched environments with a floor space allowance of 0.5, 1.1, 1.7 or 2.3 msuperscript 2/pig (treatments 1-4, respectively). Treatment 5 was identical to treatment 4, except for the absence of enriching elements which...

  5. Different methods of grouping and their effects on the agonistic behaviour of sows

    Contributor(s):: Csermely, D., Wood-Gush, D. G. M.

  6. Effects of habitat complexity on the aggressive behaviour of the American lobster ( Homarus americanus ) in captivity

    Contributor(s):: Cenni, F., Parisi, G., Gherardi, F.

    The American lobster, Homarus americanus, is one of the most economically valuable crustacean decapods worldwide, being mostly exploited to foster the live animal industry. Lobsters are typically held in storage facilities where individuals may suffer due to the repeated combats among each other....

  7. Effects of lairage temperature and holding time on pig behaviour and on carcass and meat quality

    Contributor(s):: Fraqueza, M. J., Roseiro, L. C., Almeida, J., Matias, E., Santos, C., Randall, J. M.

    Twenty-three groups of about 30 pigs each were kept in an environmentally controlled room in lairage, at temperatures of 20 or 35 degrees C for periods of 0.5 or 3 h, to establish the effects of these parameters on animal behaviour and meat quality. Following initial exploration, 50% of pigs kept...

  8. Effects of straw and unfamiliarity on fighting between newly mixed growing pigs

    Contributor(s):: Arey, D. S., Franklin, M. F.

    12 pens each of 15 Large White x Landrace pigs, weighing 25-30 kg, were formed by mixing 2 (G2), 3 (G3) or 4 (G4) groups of unfamiliar pigs. Each pig had an average of 7.5, 10 and 11.2 unfamiliar pigs in the same pen, respectively. For each mixing pattern, 2 pens were provided with straw and 2...

  9. Human handling, flock size and responses to an E. coli challenge in young chickens

    Contributor(s):: Collins, N. W., Siegel, P. B.

    The effects of human handling and flock size on physiological, behavioural and production traits of female chickens were examined in two flocks of 10 and 20 chicks handled gently and spoken to for 1 minute, 3 days a week, and in two similar groups which were not handled. Pullets maintained in...

  10. Increased group size reduces conflicts and strengthens the preference for familiar group mates after regrouping of weaned dairy calves ( Bos taurus )

    Contributor(s):: Faerevik, G., Andersen, I. L., Jensen, M. B., Boe, K. E.

    The objective of the present study was to investigate how group size and familiarity influence daily activity and social interactions in regrouped dairy calves. A total of 84 calves were divided into groups of 4, 8 and 16 animals, in which half of the calves in each group were unfamiliar with...

  11. Pig's responses to repeated social regrouping and relocation during the growing-finishing period

    Contributor(s):: Coutellier, L., Arnould, C., Boissy, A., Orgeur, P., Prunier, A., Veissier, I., Meunier-Salaun, M. C.

    In animal husbandry, pigs have to cope with social challenges when regrouped with unfamiliar conspecifics. Regrouping pigs may result in an acute stress and physical injuries thus reducing animal welfare. The aim of the present experiment was to evaluate the behavioural, cortisol and growth...

  12. The development of agonistic behaviour in relation to the size of the farrowing pen

    Contributor(s):: Duijghuisen, J. A. H.

    The development of agonistic behaviour of piglets in two types of farrowing pen and their later behaviour as sows in groups was investigated. One type of farrowing pen was 3.85 msuperscript 2, the other was 6.85 msuperscript 2. In both types, agonistic interactions were analysed at an age of 2, 3...

  13. The effect of preweaning housing on the play and agonistic behaviour of domestic pigs

    Contributor(s):: Chaloupkova, H., Illmann, G., Bartos, L., Spinka, M.

    The effect of the preweaning housing system on play behaviour before weaning and agonistic behaviour after weaning and during the fattening period was investigated in 32 litters of domestic pigs. Three preweaning housing systems were compared: poor crate (standard farrowing crate without straw),...

  14. The effects of agonistic behaviour and nutritional stress on both the success of pregnancy and various plasma constituents in Angora goats

    Contributor(s):: Conway, M. L. T., Blackshaw, J. K., Daniel, R. C. W.

    From day 100 of pregnancy, 20 Angora goats (average age 7.4 years) were restricted fed or fed at maintenance levels (controls) for 6 weeks. In restricted-fed goats, a gradual decrease in plasma glucose concentration occurred (from a mean of 2.60 to 1.67 mmol/litre). The 2 does with the lowest...

  15. The effects of tethering on later agonistic behaviour of sows in groups

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

    Observations were carried out in duplicate on two groups of six sows, that had been tethered individually, continuously during the first 24 h and then during feeding times, over a 4-week period. At this point two animals from one group were swopped for two animals from another group and the...

  16. The expression of agonistic behaviour in groups of laying hens: a regression analysis

    Contributor(s):: Bradshaw, R. H.

    The expression of agonistic behaviour, over the first 20 days following introduction, in 4 groups of 6 laying hens indicated changes in their mode of physical interactions. Linear and quadratic regression analyses were conducted to identify any similarities in the frequency of expression of...

  17. Effects of fattening boars in mixed or single sex groups and split marketing on pig welfare

    Contributor(s):: Boyle, L. A., Bjorklund, L.

    Our aim was to evaluate the effects of single or mixed sex fattening of boars and split marketing (SM) on pig welfare. Female (n=10), male (n=10) and mixed sex (n=10) groups were fattened to 105 kg. Two focal pigs per pen were selected for continuous behaviour observations and skin lesion...

  18. Maternal response to mother-offspring separation in the chimpanzee ( Pan troglodytes )

    Contributor(s):: Bloomsmith, M. A., Tarou, L. R., Lambeth, S. P., Haberstroh, M. D.

    For management and/or research purposes, chimpanzee mothers and their offspring are often physically separated from one another at an earlier age than they would be in the wild. Studies of the behavioural and physiological effects of mother-infant separation on infant behaviour have been...

  19. Social behaviour and injuries of horned cows in loose housing systems

    Contributor(s):: Menke, C., Waiblinger, S., Folsch, D. W., Wiepkema, P. R.

    The relationship between social behaviour and skin injuries (caused by horns) of loose housed horned cows was investigated on 35 dairy farms (mean herd-size, 34.54, range, 8-80). While the frequencies of 2 agonistic behaviour elements (push and chase away) were positively correlated with the...

  20. Social behaviour of collared peccaries ( Pecari tajacu ) under three space allowances

    Contributor(s):: Nogueira, S. S. da C., Silva, M. G., Dias, C. T. dos S., Pompeia, S., Cetra, M., Nogueira Filho, S. L. G.

    Captive breeding of peccaries is on the increase in neotropical countries. Few studies, however, have reported behavioural responses of wild animals under farmed conditions. Therefore, the aim of this study was to evaluate the effects of space allowance on the occurrence of social behaviour...