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  1. Effects of carprofen, meloxicam and butorphanol on broiler chickens' performance in mobility tests

    Contributor(s):: Hothersall, B., Caplen, G., Parker, R., Nicol, C. J., Waterman-Pearson, A. E., Weeks, C. A., Murrell, J. C.

    Lame broiler chickens perform poorly in standardised mobility tests and have nociceptive thresholds that differ from those of non-lame birds, even when confounding factors such as differences in bodyweight are accounted for. This study investigated whether these altered responses could be due to...

  2. Filial attachment in sheep: similarities and differences between ewe-lamb and human-lamb relationships

    Contributor(s):: Nowak, R., Boivin, X.

    Animals develop relationships with intra- and interspecific partners, including humans. In some cases this can lead to strong emotional bonds indicating the existence of attachment. The sheep is well known to develop various forms of social attachment (mothers towards young, lambs towards...

  3. Generating positive affective states in sheep: the influence of food rewards and opioid administration

    Contributor(s):: Verbeek, E., Ferguson, D., Monjour, P. Q. de, Lee, C.

    This study investigated the involvement of the opioid system in modulating the affective state after the consumption of palatable and unpalatable rewards, using judgement bias as an indicator of the affective state. We hypothesised that consuming a palatable food reward would generate a more...

  4. Pain-suppressed behaviors in the red-tailed hawk ( Buteo jamaicensis)

    Contributor(s):: Mazor-Thomas, J. E., Mann, P. E., Karas, A. Z., Tseng, F.

    Our ability to provide analgesia in wild and exotic patients is hampered by a lack of species-specific information on effective drugs and protocols. One contributing factor is the difficulty of applying data from traditional laboratory tests of nociception to clinical conditions frequently...

  5. Effects of signalled reward type, food status and a mu-opioid receptor antagonist on cue-induced anticipatory behaviour in laying hens ( Gallus domesticus)

    Contributor(s):: Moe, R. O., Nordgreen, J., Janczak, A. M., Spruijt, B. M., Bakken, M.

  6. Positive affective state induced by opioid analgesia in laying hens with bone fractures

    Contributor(s):: Nasr, M. A. F., Browne, W. J., Caplen, G., Hothersall, B., Murrell, J. C., Nicol, C. J.

  7. Coping in groups of domestic horses - review from a social and neurobiological perspective

    Contributor(s):: VanDierendonck, M. C., Spruijt, B. M.

  8. Opioid control of behaviour in sheep: effects of morphine and naloxone on food intake, activity and the affective state

    Contributor(s):: Verbeek, E., Ferguson, D., Monjour, P. Q. de, Lee, C.

  9. Naloxone cannot abolish the lack of oxytocin release during unexperienced suckling of dairy cows. (Special issue: Suckling)

    Contributor(s):: Kraetzl, W. D., Tancin, V., Schams, D., Bruckmaier, R. M.

    To evaluate the role of opioids for the regulation of oxytocin release in response to teat stimulation, 10 brown-Swiss dairy cows in mid-lactation were randomized to two experiments. In the first experiment, four cows without previous suckling experience were suckled by an alien calf between two...

  10. The efficacy of three types of analgesic drugs in reducing pain in the rainbow trout, Oncorhynchus mykiss

    Contributor(s):: Mettam, J. J., Oulton, L. J., McCrohan, C. R., Sneddon, L. U.

    Recent research has shown the possibility of pain perception in fish; therefore, the use of analgesia or "painkillers" should be considered for invasive procedures. However, there is relatively little information on the effectiveness of analgesic drugs nor on the appropriate dose for fish. This...

  11. A review of pain assessment techniques and pharmacological approaches to pain relief after bovine castration: practical implications for cattle production within the United States. (Special Issue: Pain in farm animals.)

    Contributor(s):: Coetzee, J. F.

    Castration of male calves destined for beef production is a common livestock management practice in the United States amounting to approximately 7 million procedures per year. Recently there has been renewed interest in identifying methods to reduce pain associated with dehorning and castration....

  12. The responsiveness of sows to their piglets in relation to the length of parturition and the involvement of endogenous opioids

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

    The aim of this study was to describe maternal behaviour in the pig and to investigate the effect of endogenous opioids on maternal responsiveness. The behaviour of 16 Large White x Landrace female pigs was recorded around farrowing. The pig's posture and her response when piglets were present at...

  13. Injectable anesthetics

    Contributor(s):: Sawyer, D. C.

  14. The relationship between housing and social rank on cortisol, beta -endorphin and dynorphin (1-13) secretion in sows

    Contributor(s):: Zanella, A. J., Brunner, P., Unshelm, J., Mendl, M. T., Broom, D. M.

    Endogenous opioids and glucocorticoids may be useful welfare indicators in pigs. Measures of plasma cortisol were carried out in plasma samples collected hourly, from 8:00 to 17:00 h from High Ranking (HR) (n = 5) Middle Ranking (MR) (n = 7) and Low Ranking (LR) (n = 4) group housed sows and from...

  15. Behaviour of restricted-fed broiler breeders in relation to pharmacological manipulation of dopamine and opioid receptor subtypes

    Contributor(s):: Kostal, L., Savory, C. J.