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  1. Evidence for pain in decapod crustaceans

    Contributor(s):: Elwood, R. W.

  2. Breed and maternal effects on the intake of tannin-rich browse by juvenile domestic goats ( Capra hircus )

    Contributor(s):: Glasser, T. A., Ungar, E. D., Landau, S. Y., Perevolotsky, A., Muklada, H., Walker, J. W.

    Goat breeds differ in their consumption of tannin-rich browse, but the relative contributions of genetics and learning to these differences is unclear. The objective of this study was to differentiate between the effects of breed (nature) and rearing environment (nurture) on consumption of a...

  3. Reindeer and caribou (Rangifer tarandus) response towards human activities

    Full-text: Available

    | Contributor(s):: E Reimers, J. E. Colman

    We address the question of how human activities and infrastructure influence reindeer/caribou’s (Rangifer tarandus) behaviour and habitat use and review studies based on current methodologies. Anthropogenic activities have a direct affect on Rangifer behaviour through the senses hearing, sight...

  4. Face-fly pest intensity, fly-avoidance behavior (bunching) and grazing time in Holstein heifers

    | Contributor(s):: Schmidtmann, E. T., Valla, M. E.

    In field studies in New York State in 1978-79, the relationship between feeding by adults of Musca autumnalis Deg., and fly-avoidance behaviour (bunching) and grazing time of heifers was examined in herds that were either exposed to the ambient pest intensity levels or treated with permethrin...

  5. Sound avoidance by domestic pigs depends upon characteristics of the signal

    | Contributor(s):: Talling, J. C., Waran, N. K., Wathes, C. M., Lines, J. A.

    Two groups of 12 pigs, weighing 25 kg, were individually exposed to a test sound in a modified unsignalled one-way avoidance procedure. The test sound for the first group was a recording from an animal transporter played at 84 dB(Lin), with a rise time of 2 s (uniform). For the second group,...

  6. Avoidance reactions of domestic dogs to unfamiliar male and female humans in a kennel setting

    | Contributor(s):: Lore, R. K., Eisenberg, F. B.

    Many kennel owners and veterinarians prefer women assistants because it is assumed that women elicit less avoidance from domestic animals than men. To evaluate this assumption, 10 male and 10 female dogs were given two human-reaction tests to assess their behaviour in the presence of an...

  7. Effects of novelty on rats' responses to CO<sub>2</sub>; exposure

    | Contributor(s):: Niel, L., Kirkden, R. D., Weary, D. M.

    Laboratory rats are routinely killed using a gradually increasing concentration of carbon dioxide (CO2) gas. However, CO2 exposure has been shown to cause aversion and to increase exploratory and escape behaviours in rats. We examined whether these responses are due, in part, to novelty, using...

  8. Relationship between number of conditioning trials per training session and avoidance learning in horses

    | Contributor(s):: McCall, C. A., Salters, M. A., Simpson, S. M.

    Sixteen horses were used to determine if number of trials per training session (5, 10, 15 or 20) affected learning performance in an avoidance conditioning task. The horse had to move from one side of a test pen to the other during auditory cue presentation to avoid aversive stimulation (electric...

  9. Do herbivores associate flavours with specific consequences in flavour aversion learning?

    | Contributor(s):: Kimball, B. A., Billings, V.

    Goats were first offered a novel, maple-flavoured diet paired with either lithium chloride (LiCl) or oxalic acid (OA) delivered intraruminally. Aversion to maple diet persisted for 6 days, regardless of toxin. Following a 10-day intermission, aversion to maple diet was reacquired (spontaneous...

  10. Methods of training cattle to avoid a location using electrical cues

    | Contributor(s):: Lee, C., Prayaga, K., Reed, M., Henshall, J.

    Electronic technologies offer new opportunities to control the spatial positioning and social groupings of cattle. This study examines the potential for cattle to be trained by associative learning so that they avoid a feed attractant when cued by electrical stimuli delivered by radio-controlled...

  11. Maternal influence on feeding site avoidance behaviour of lambs

    | Contributor(s):: Black-Rubio, C. M., Cibils, A. F., Gould, W. R.

    Ewes can play a critical role in moulding habitat preferences of their daughters. Little is known, however, about how feeding site preferences of lambs can be modified by manipulating the behaviour of their dams. We conducted an experiment with sheep to investigate the influence of shock-trained...

  12. The ability of cattle to distinguish between, and their preference for, floors with different levels of friction, and their avoidance of floors contaminated with excreta

    | Contributor(s):: Phillips, C. J. C., Morris, I. D.

    The ability of dairy cows to discriminate between floors with a smooth epoxy resin surface or with surface-applied bauxite aggregates of mean diameters 0.5, 1.2 or 2.5 mm (having coefficients of static friction of 0.35, 0.42, 0.49 and 0.74, respectively) was recorded when they were offered the...