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

    Contributor(s):: Mazor-Thomas, Jana E., Mann, Phyllis E., Karas, Alicia Z., Tseng, Flo

    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...

  2. Generating positive affective states in sheep: The influence of food rewards and opioid administration

    Contributor(s):: Verbeek, Else, Ferguson, Drewe, Quinquet de Monjour, Patrick, Lee, Caroline

    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...

  3. Antinociceptive effects of buprenorphine in zebrafish larvae: An alternative for rodent models to study pain and nociception?

    Contributor(s):: Steenbergen, Peter J., Bardine, Nabila

    The underlying processes of nociception and pain are, despite the rodent models available, still not fully understood. One of the drawbacks of rodent model systems is the difficulty to screen compound libraries for their influence on nociception, thus slowing down the discovery of novel...

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

    Contributor(s):: Verbeek, Else, Ferguson, Drewe, Quinquet de Monjour, Patrick, Lee, Caroline

    The affective states of animals are important determinants of welfare, yet they are poorly understood. Here we investigate opioid involvement in the regulation of behaviours that may be indicative of the arousal and valence components of affective states in sheep. Ewes treated with sterile water...

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

    Contributor(s):: Mettam, Jessica J., Oulton, Lois J., McCrohan, Catherine R., Sneddon, Lynne 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...

  6. Coping in groups of domestic horses – Review from a social and neurobiological perspective

    Contributor(s):: VanDierendonck, Machteld C., Spruijt, Berry M.

    Many sport horses live solitary, with no physical contact to other horses allowed for years, for many different reasons including limiting risk of injuries caused by other horses. Other horses are (semi-) permanently housed in large groups, because their owners perceive this is “natural” and thus...

  7. Buprenorphine via drinking water and combined oral-injection protocols for pain relief in mice

    Contributor(s):: Sauer, Mareike, Fleischmann, Thea, Lipiski, Miriam, Arras, Margarete, Jirkof, Paulin

    Buprenorphine is the opioid analgesic most commonly used in laboratory mice. However, to maintain therapeutically effective serum levels, repeated injections are required. To overcome negative aspects of restraint and injection, oral self-administration is a promising alternative but has been...

  8. 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...

  9. 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...

  10. 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...

  11. 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...

  12. Injectable anesthetics

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

  13. 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...

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

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