Behavioural reactivity of ewes and lambs during partial and total social isolation
Contributor(s):: Barnard, S., Matthews, L. R., Messori, S., Vulpiani, M. P., Ferri, N.
This work investigated the differences in the reactivity of Sarda (primiparous n=18, multiparous n=17) and Dorset (multiparous n=8) breeds of sheep and their singleton lambs to two challenging test situations involving a mother-lamb partial separation test and an isolation test. Non-parametric...
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...
Space allowance during gestation and early maternal separation: effects on the fear response and social motivation of lambs
Contributor(s):: Averos, X., Marchewka, J., Beltran de Heredia, I., Zanella, A. J., Ruiz, R., Estevez, I.
A common prenatal stressor in lambs is early maternal separation, which may be aggravated by spatial restriction of ewes during pregnancy. They may influence lambs' development and coping abilities. The aim of this study was to determine how space allowance provided to ewes during pregnancy and...
Do rubber rings coated with lignocaine reduce the pain associated with ring castration of lambs?
Contributor(s):: Stewart, M., Beausoleil, N. J., Johnson, C. B., Webster, J. R., Schutz, K. E., Cox, N., Stafford, K. J.
To facilitate the wider use of pain relief on-farm, practical 'farmer friendly' methods for administering pain relief are necessary. This proof of concept study evaluated the efficacy of rubber rings coated with local anaesthetic (LA, lignocaine) for providing pain relief in lambs castrated 4...
Evaluation of microwave energy as a humane stunning technique based on electroencephalography (EEG) of anaesthetised cattle
Contributor(s):: Rault, J. L., Hemsworth, P. H., Cakebread, P. L., Mellor, D. J., Johnson, C. B.
Humane slaughter implies that an animal experiences minimal pain and distress before it is killed. Stunning is commonly used to induce insensibility but can lead to variable results or be considered unsatisfactory by some religious groups. Microwave energy can induce insensibility in rats, and...
Investigating the motivation to play in lambs
Contributor(s):: Chapagain, D., Uvnas-Moberg, K., Lidfors, L. M.
The aim of this study was to identify behaviours and ear postures linked to the appetitive, consummatory and post-consummatory motivational phases of play in male lambs, and to evaluate how cortisol was affected by play. Ten pairs of male lambs, Ovis aries were observed in a play arena three...
Behavior of lambs in rest pens during long-distance transport
Contributor(s):: Krawczel, P. D., Friend, T. H., Archer, G. S.
The aim of this study was to determine how one group of lambs utilized 2 consecutive rest periods in novel environments with access to food and water that occurred during 22 hr of motor transport. The 18.5+or-0.6 kg lambs (n=15) were transported for 8 hr and then unloaded for a 6-hr rest period....
Determination of sheep learning responses to a directional audio cue
Contributor(s):: Morris, J. E., Fisher, A. D., Doyle, R. E., Bush, R. D.
There are scientific opinions that a nonhuman animal cannot feel emotions, and, hence, positive experiences, without being cognitive. Therefore, determining an animal's cognitive capacity can be useful in supporting the existence of emotions. Research shows that sheep can perform tasks based on...
Livestock vehicle accidents in Spain: causes, consequences, and effects on animal welfare
Contributor(s):: Miranda-de la Lama, G. C., Sepulveda, W. S., Villarroel, M., Maria, G. A.
Livestock vehicle accidents are rare but involve significant economic, human, and nonhuman farm animal losses. This study obtained information on the characteristics of accidents, the animals involved, and injuries to humans from newspaper reports about livestock vehicle accidents in Spain from...
A comparison of handling methods relevant to the religious slaughter of sheep
Contributor(s):: Bates, L. S. W., Ford, E. A., Brown, S. N., Richards, G. J., Hadley, P. J., Wotton, S. B., Knowles, T. G.
Legislation governing non-stun slaughter of sheep in England requires that they are individually and mechanically restrained for slaughter and not moved for at least 20 s post neck cut, until unconsciousness or insensibility occurs. Complying with the need for individual handling, in what is a...
Effect of breed and lithium chloride dose on the conditioned aversion to olive tree leaves ( Olea europaea L.) of sheep
Contributor(s):: Manuelian, C. L., Albanell, E., Rovai, M., Salama, A. A. K., Caja, G.
Grazing maybe an efficient tool for controlling weed cover in olive groves. However, olive leaves are very palatable for sheep, which damages the trees and compromised the later olive production. Lithium chloride (LiCl) is an effective agent for creating food aversion in ruminants through the...
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...
Repeated exposure to positive events induces optimistic-like judgment and enhances fearfulness in chronically stressed sheep
Contributor(s):: Destrez, A., Deiss, V., Leterrier, C., Calandreau, L., Boissy, A.
Chronic stress in farm animals can induce detrimental effects in emotional sensitivity and cognitive function, for example, by altering fearfulness and eliciting pessimistic-like judgment. Based on a few experiments carried out on laboratory animals, we suggest that exposing chronically stressed...
Social context and other factors influence the behavioural expression of pain by lambs
Contributor(s):: Guesgen, M. J., Beausoleil, N. J., Minot, E. O., Stewart, M., Stafford, K. J.
There is evidence that the presence of a conspecific can alter the experience of pain in humans and other animals. This 'social buffering' may be mediated by factors such as relatedness and familiarity. This study investigates whether and how the social context affects the behavioural response of...
Using sterilization to change predation rates of wild coyotes: a test case involving pronghorn fawns
Contributor(s):: Seidler, R. G., Gese, E. M., Conner, M. M.
Surgical sterilization of coyotes ( Canis latrans) reduced their predation rate on domestic sheep. We investigated whether sterilizing coyotes would similarly change coyote predation rates on pronghorn antelope ( Antilocapra americana) neonates. From May 2006 to March 2008, we radio-collared 71...
Welfare by the ear: comparing relative durations and frequencies of ear postures by using an automated tracking system in sheep
Contributor(s):: Vogeli, S., Wechsler, B., Gygax, L.
Given the increased interest in animal emotional reactions for assessing welfare, indicators for such reactions are sought. Ear postures and movements have been found to be promising indicators of emotional states in sheep and other animals. The manual recording of ear postures, however, is very...
Hefting onto place: intersecting lives of humans and sheep on Scottish hills landscape
Contributor(s):: Gray, J.
This paper analyzes the phenomenon called hefting of sheep onto the landscape of hill sheep farms in the Scottish Borders. It is based upon data collected during extended periods of ethnographic fieldwork beginning in 1981 and continuing to the present. Hefting is the term used by sheep farmers...
Chronic stress induces pessimistic-like judgment and learning deficits in sheep
Contributor(s):: Destrez, A., Deiss, V., Levy, F., Calandreau, L., Lee, C., Chaillou-Sagon, E., Boissy, A.
Electromagnetic induction of insensibility in animals: a review
Contributor(s):: Small, A., McLean, D., Owen, J. S., Ralph, J.
Farm characteristics in Slovene wolf habitat related to attacks on sheep
Contributor(s):: Liere, D. van, Dwyer, C., Jordan, D., Premik-Banic, A., Valencic, A., Kompan, D., Siard, N.