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  1. The effect of early colour preference and of a colour exposing procedure on the choice of nest colours in laying hens

    Contributor(s):: Huber-Eicher, B.

    It has been observed that hens at the start of lay show a strong preference for a limited number of nests, i.e. those at the corners and at the ends of rows. This leads to overcrowded nests and, as a consequence, to more aggression and an increase in cracked and mislaid eggs. This study aims to...

  2. The effect of parity and environmental restriction on behavioural and physiological responses of pre-parturient pigs

    Contributor(s):: Jarvis, S., Vegt, B. J. van der, Lawrence, A. B., McLean, K. A., Deans, L. A., Chirnside, J., Calvert, S. K.

    There is increasing evidence that restriction of pre-parturient behaviour in pigs is stress-inducing, characterised by an elevation in hypothalamic-pituitary-adrenal (HPA) activity in gilts. To determine whether pigs adapt to behavioural restriction, through modification of nest-building...

  3. The effects of branches on prepartum nest building in gilts with access to straw

    Contributor(s):: Damm, B. I., Vestergaard, K. S., Schroder-Petersen, D. L., Ladewig, J.

    Sows farrowing in a semi-natural environment terminate nest building 1-7 h prior to parturition after having built a nest for which a variety of materials are used. No nest-building behaviour occurs during parturition and the sows remain lying in the nest throughout most of the farrowing. In...

  4. The effects of confinement on periparturient behaviour and circulating prolactin, prostaglandin F<sub>2 alpha </sub> and oxytocin in gilts with access to a variety of nest materials

    Contributor(s):: Damm, B. I., Bildsoe, M., Gilbert, C., Ladewig, J., Vestergaard, K. S.

    In a 2x2 factorial experiment, the effects of gestation and farrowing housing on: (1) periparturient behaviour and circulating prolactin, prostaglandin F2 alpha (PGF2 alpha ) and oxytocin in gilts with access to peat, straw and branches, and (2) correlational relationships between the...

  5. Shelter choice by Syrian hamsters ( Mesocricetus auratus ) in the laboratory

    Contributor(s):: Veillette, M., Reebs, S. G.

    The preference of Syrian hamsters (Mesocricetus auratus) for different in-cage shelters was tested. First, 15 males and 15 females were made to choose between a cage with a shelter and one without. Different shelters were tested consecutively: short (10-cm) or medium (15-cm) pipes made of black...

  6. Floor laying by domestic hens [abstract]

    Contributor(s):: Appleby, M. C., McRae, H. E.

    The problem of floor-laying was investigated by a survey of hen behaviour in a commercial deep-litter system with 4000 broiler breeders. Two hundred females were tagged individually, and regular observations made over 3 months. Birds were apparently consistent in whether they laid in nests or on...

  7. Egg-laying behaviour and nest-site selection of domestic hens kept in small floor-pens

    Contributor(s):: Rietveld-Piepers, B., Blokhuis, H. J., Wiepkema, P. R.

    The development of egg-laying behaviour and nest-site choice is described in 7 flocks of White Leghorn hens housed in small floor-pens. Special interest was directed towards social dominance and the effect of the presence of a cock on the hen's nest-site choice. In the weeks before the hens came...

  8. Identification of key nest site stimuli for Japanese quail ( Coturnix japonica )

    Contributor(s):: Schmid, I., Wechsler, B.

    Groups of Japanese quail hens were housed in pens (2 x 1 x 0.5 m) with litter and access to a sand-filled dust bath and 4 nest boxes for 2 periods of 15 days. The type of nest boxes varied between the pens and the incidence of eggs laid outside the nest boxes was recorded. In experiment 1 (8...

  9. Influence of nest seclusion and nesting material on pre-laying behaviour of laying hens

    | Contributor(s):: Struelens, E., Nuffel, A. van, Tuyttens, F. A. M., Audoorn, L., Vranken, E., Zoons, J., Berckmans, D., Odberg, F., Dongen, S. van, Sonck, B.

    Provision of nest sites is beneficial for the welfare of laying hens in intensive production systems. The design of these nest sites has a direct effect on pre-laying behaviour. The aim of this study was to investigate the effects of screening off the entrances of the nest boxes with...

  10. Preference of Syrian hamsters to nest in old versus new bedding

    | Contributor(s):: Veillette, M., Reebs, S. G.

    This study tested whether Syrian hamsters (Mesocricetus auratus) have an aversion to old bedding (up to 14 days) by offering them the option to nest in a new cage. A secondary goal was to assess the relative value of shelters by testing whether the tendency to nest in the new cage was reduced...

  11. Strength of preference for nesting material as environmental enrichment for laboratory mice

    | Contributor(s):: Weerd, H. A. van de, Loo, P. L. P. van, Zutphen, L. F. M. van, Koolhaas, J. M., Baumans, V.

    The presence of nesting material (paper towel or tissue) and the presence of a nest box (perforated metal or clear perspex box) were evaluated in 47 mice. On average, all the mice spent significantly more time in the cage with the nesting material (more than 69% of their total time, less than 25%...

  12. The influence of light intensity during early exposure to colours on the choice of nest colours by laying hens

    | Contributor(s):: Zupan, M., Kruschwitz, A., Huber-Eicher, B.

    When alternative husbandry systems to battery cages are used, a problem may arise whereby eggs are not laid in the nests provided. This leads not only to economic loss, but may also promote the outbreak of cannibalism. However, the choosing of a nest involves complex behavioural patterns and may...

  13. The influence of straw, cloth tassel, or both on the prepartum behavior of sows

    | Contributor(s):: Widowski, T. M., Curtis, S. E.

    Three experiments were conducted to examine the material-directed behaviour or prepartum sows. Eight of 12 prepartum sows in pens abruptly began to take straw from a basket and used it to construct nests on the day of farrowing. All sows engaged in similar amounts of rooting, pawing, and typical...

  14. Diurnal rhythm of bar-biting in relation to other behaviour in pregnant sows

    | Contributor(s):: Jensen, P.

    Instantaneous observations of behaviour were made with video once every sixth minute around the clock (in 20-s recordings at each interval) during the first 3 days following the introduction of pregnant sows into one of the following three environments: (1)loose housing in groups of five with a...

  15. Nest preference of laying hens ( Gallus gallus domesticus ) and their motivation to exert themselves to gain nest access

    | Contributor(s):: Kruschwitz, A., Zupan, M., Buchwalder, T., Huber-Eicher, B.

    In connection with the development of a test method for the attractiveness and appropriateness of nests for laying hens, we carried out an investigation by using a preference test and motivation measuring with the help of push doors. Hens were offered two different nest sites either consisting of...

  16. Nests and nesting in the domestic fowl: which is the reward?

    | Contributor(s):: Kite, V. G., Duncan, I. J. H.

  17. Visual recognition of key nest site stimuli by laying hens in cages

    | Contributor(s):: Hughes, B. O., Petherick, J. C., Brown, M. F., Waddington, D.

    Laying hens (64 medium-hybrid ISA Browns), which had been kept to 50 weeks old either in pens or in battery cages, were placed in individual cages which had a tray covered with a thin layer of wood-shavings litter under part of the cage floor; these trays could be seen but not touched by the...

  18. Effects of nest quality and other cues for exploration on pre-laying behaviour

    | Contributor(s):: Freire, R., Appleby, M. C., Hughes, B. O.

    The pre-laying behaviour of 11 hens was observed in pens without or with litter and without or with an exploratory walkway. Hens with unlittered nest boxes had longer durations of pre-laying behaviour (151 vs. 110 min) and spent longer searching (32 vs. 19 min) than those with littered nest...

  19. Effects of temporary nest box removal on maternal behaviour and pup survival in caged rabbits ( Oryctolagus cuniculus )

    | Contributor(s):: Baumann, P., Oester, H., Stauffacher, M.

    Free nest access is widely used in the management of commercial breeding units for fattening rabbits, but potentially counteracts the doe's behavioural goal of a closed nest entrance, leading to repeated nest visits without nursing and attempts to close the entrance due to an overtaxed...

  20. Influence of nest-box substrate (pine shavings vs. artificial turf) on nesting behaviour and prolactin levels in turkeys hens ( Meleagris gallopavo )

    | Contributor(s):: Book, C. M., Millam, J. R.

    Because brood patch stimulation is required for the development of incubation behaviour and nesting physiology in turkey hens, the hypothesis that differences in tactility of nest box substrates might alter the normal progression of the laying cycle was tested. Nest boxes containing either pine...