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  1. Nest-building behaviour and activity budgets of sows provided with different materials

    Contributor(s):: Rosvold, Ellen Marie, Newberry, Ruth C., Framstad, Tore, Andersen, Inger-Lise

    Domestic sows are still highly motivated to build a nest before farrowing. Many pig houses have slurry systems that do not allow use of long straw or other bulky materials that could block the drains, which provides an incentive to investigate the functionality of finer-grained materials for nest...

  2. Why do pigs root and in what will they root? A review on the exploratory behaviour of pigs in relation to environmental enrichment

    | Contributor(s):: Studnitz, M., Jensen, M. B., Pedersen, L. J.

    The intention of the new European legislation on rooting materials for pigs is to improve the welfare of pigs. The question is: which materials are suitable rooting materials for pigs? To answer this question the motivation for exploration in pigs is elucidated and the needs of the pigs in this...

  3. Concurrent schedules of reinforcement as a method to quantify the relative attractiveness of two rooting materials

    | Contributor(s):: Pedersen, L. J., Jensen, M. B.

    Operant conditioning techniques were applied to investigate pigs' preference for peat and long straw using concurrent schedules of reinforcement. Ten pigs worked, by pressing one of two panels, for access to two different materials in daily 50 min test sessions. Workloads of the reference...

  4. The strength of pigs' preferences for different rooting materials measured using concurrent schedules of reinforcement

    | Contributor(s):: Pedersen, L. J., Holm, L., Jensen, M. B., Jorgensen, E.

    The aim of the present experiment was to measure pigs' preferences for four different rooting materials using a set-up where pigs were given the opportunity to consider the relative attractiveness of two different materials simultaneously. Ten pigs had access to work for 50 min daily in an...

  5. Pigs' preferences for rooting materials measured in a three-choice maze-test

    | Contributor(s):: Jensen, M. B., Studnitz, M., Halekoh, U., Pedersen, L. J., Jorgensen, E.

    The aim of this experiment was to investigate pigs' preferences for rooting materials. Eighteen materials were allocated to six categories each of which consisted of three similar materials based on characteristics such as structure, size of particles, complexity, destructibility and...

  6. 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...

  7. Preference testing of substrates by growing pigs

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

    The preferences of growing pigs for substrates were investigated by giving groups of 6 pigs a choice between 2 substrates in each test. The 7 substrates examined were concrete, mushroom compost (spent), peat, sand, sawdust, straw and woodbark. 13 comparisons of pairs of substrates were tested...