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  1. Non-exclusive spatial preference in the laying hen

    Contributor(s):: Nicol, C. J.

    When 12 hens were given a choice between four cages differing in size and shape, they spent most time in the cage with the largest floor area, but substantial amounts of time were spent in the remaining three cages. Eight possible explanations for this non-exclusive choice are proposed: variation...

  2. The effects of pen size on the behaviour of farmed red deer stags confined in yards

    Contributor(s):: Pollard, J. C., Littlejohn, R. P.

    40 red deer stags (2 years old) were confined for 40 min in large (5 m x 4 m) or small (2.5 m x 4 m) pens on 2 days in spring and summer. Wall pacing and vertical/horizontal head movements at the walls were more frequent in small pens than in large pens and were carried out by a greater...

  3. Use of pen space by broiler chickens: effects of age and pen size

    Contributor(s):: Newberry, R. C., Hall, J. W.

    An experiment was conducted to investigate the effects of age and pen size on the use of pen space by male broiler chickens. The locations of 18 marked chickens in a large pen (407 msuperscript 2 with 3040 birds) and 10 in each of two small pens (203.5 msuperscript 2 with 1520 birds) were...

  4. Operant determination of the cage and feeder size preferences of the laying hen

    Contributor(s):: Faure, J. M.

    The design of an apparatus which allows hens to work for feeder space or for cage size is described. Using this apparatus, it was shown that groups of 4 hens will only rarely work to obtain more than the 40-cm length of feed trough which is usually provided in Europe for a group of 4 medium...

  5. 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...

  6. The effects of farrowing nest size and width on sow and piglet behaviour and piglet survival

    Contributor(s):: Cronin, G. M., Dunsmore, B., Leeson, E.

    The 'Werribee farrowing pen' (WFP) was developed as a loose housing alternative to the farrowing crate. The WFP occupies about twice the space of a crate and comprises 2 compartments, a 'nest' and a 'non-nest' area. The effects of 'nest' size (large: L vs. small: S) and width (wide: W vs. narrow:...