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  1. Emotions after victory or defeat assessed through qualitative behavioural assessment, skin lesions and blood parameters in pigs

    Contributor(s):: Camerlink, Irene, Peijnenburg, Mieke, Wemelsfelder, Françoise, Turner, Simon P.

    Aggression between pigs causes injuries and production losses and is a long standing animal welfare issue. Although the physiological impact of aggression has been well described, little is known about the emotional experience of aggressive interactions. Our aim was to investigate the emotional...

  2. He⿿s getting under my skin! Comparing the sensitivity and specificity of dermal vs subcuticular lesions as a measure of aggression in mice

    Contributor(s):: Gaskill, Brianna N., Stottler, Aurora, Pritchett-Corning, Kathleen R., Wong, Lilian K., Geronimo, Jerome, Garner, Joseph P.

    Aggression is the leading cause of death in young laboratory mice, representing a major welfare issue. Many of the experimental measures used in traditional aggression research, especially those focusing on territorial aggression (e.g., resident/intruder) are poorly suited to examining dominance...

  3. Rearing piglets in multi-litter group lactation systems: Effects on piglet aggression and injuries post-weaning

    Contributor(s):: Verdon, Megan, Morrison, Rebecca S., Hemsworth, Paul H.

    This experiment investigated the effects of rearing piglets in a multi-litter lactation system on piglet aggression at weaning. The following four pre-weaning treatments were applied to 72 sows and their litters (n=642 piglets); (1) Farrowing crate (‘FC’ − n=24 sows), (2) PigSAFE pens, in which...

  4. Physiological stress coping and anxiety in greyhounds displaying inter-dog aggression

    Contributor(s):: Wormald, Dennis, Lawrence, Andrew J., Carter, Gabrielle, Fisher, Andrew D.

    Aggression is a relatively common behavioural problem in dogs that has both animal welfare and human safety considerations. Understanding the behavioural and physiological processes contributing to aggression is required for a better understanding of this issue. Previous studies have examined...

  5. The effect of mixing levels on aggression at weaning in piglets

    Contributor(s):: Mei, Hongyuan, Yang, Binyu, Luo, Juan, Gan, Ling

    This study was undertaken to investigate the effects of mixing levels on aggressive behaviors at weaning in piglets. In this study, 144 28-day-old piglets, which were from 24 litters, were weaned and relocated to four experimental tests with different mixing proportion (A: 6:0; B: 5:1; C: 4:2; D:...

  6. Effect of a shelf-furnished screen on space utilisation and social behaviour of indoor group-housed cats (Felis silvestris catus)

    Full-text: Available

    | Contributor(s):: Desforges, Emma J., Moesta, Alexandra, Farnworth, Mark J.

    The environment of the laboratory cat can be restrictive and may impact their welfare. Enrichment is often provided to alleviate welfare impacts but is seldom assessed or validated for efficacy. This study investigated the effect of novel room furniture (a screen) on the expression of agonistic...

  7. Effect of a partial cage dividing enrichment on aggression-associated parameters in group-housed male C57BL/6NCrl mice

    | Contributor(s):: Mertens, Sinja, Gass, Peter, Palme, Rupert, Hiebl, Bernhard, Chourbaji, Sabine

    Group-housing is highly important for social animals. Group-housing of male mice in captivity though often leads to aggression with partially disastrous consequences for the animals as well as for the quality of experimental data. In this study we investigated the effect of a novel...

  8. Factores de riesgo implicados en el comportamiento agresivo del perro y del gato

    Full-text: Available

    | Contributor(s):: Marta Amat Grau

    El presente trabajo se centra en el estudio de algunos aspectos de la agresividad del perro y del gato. El estudio de la agresividad canina y felina es importante por varios motivos. En primer lugar, los problemas de agresividad del perro y del gato son muy frecuentes y, al menos en los centros...

  9. Effects of group housing system, pen floor type, and lactation management on performance and behaviour in rabbit does

    | Contributor(s):: Zomeño, Cristina, Birolo, Marco, Gratta, Francesco, Zuffellato, Andrea, Xiccato, Gerolamo, Trocino, Angela

    This work aimed at evaluating the effects of housing system, pen floor type, and lactation management on rabbit doe and kit performance throughout a reproductive cycle, including categorization of aggressiveness and injuries. Forty multiparous pregnant does were assigned to six experimental...

  10. The sex ratio of a litter affects the behaviour of its female pigs until at least 16 weeks of age

    | Contributor(s):: Seyfang, Jemma, Plush, Kate J., Kirkwood, Roy N., Tilbrook, Alan J., Ralph, Cameron R.

    There are sex differences in behaviour with males tending to be more aggressive and less fearful than females. When females are treated with androgens they display more aggressive, male like, behaviours and this suggests that androgen exposure has a role in the development of aggression. Female...

  11. The translation of animal welfare research into practice: The case of mixing aggression between pigs

    | Contributor(s):: Peden, Rachel S. E., Turner, Simon P., Boyle, Laura A., Camerlink, Irene

    Aggression between unfamiliar pigs at mixing is a major animal welfare problem in commercial farming. It has been studied since the 1970s and remains an important topic in animal welfare research. Methods to reduce pig aggression at mixing have been reviewed previously, but there has been little...

  12. Housing, ease of handling and minimising inter-pig aggression at mixing for nursery to finishing pigs as reported in a survey of North American pork producers

    | Contributor(s):: Ison, S. H., Bates, R. O., Ernst, C. W., Steibel, J. P., Siegford, J. M.

    Inter-pig aggression is a welfare issue that has undergone extensive research. Although management techniques have proven useful in minimising aggression in research settings, it is not known how often these are used on farm. One objective of an online survey of North American pork producers was...

  13. Behavioural and physiological responses of laying hens to automated monitoring equipment

    | Contributor(s):: Buijs, Stephanie, Booth, Francesca, Richards, Gemma, McGaughey, Laura, Nicol, Christine J., Edgar, Joanne, Tarlton, John F.

    Automated monitoring of behaviour can offer a wealth of information in circumstances where observing behaviour is difficult or time consuming. However, this often requires attaching monitoring devices to the animal which can alter behaviour, potentially invalidating any data collected. Birds...

  14. Breaking up is hard to do: Does splitting cages of mice reduce aggression?

    | Contributor(s):: Blankenberger, Whitney B., Weber, Elin M., Chu, David K., Geronimo, Jerome T., Theil, Jacob, Gaskill, Brianna N., Pritchett-Corning, Kathleen, Albertelli, Megan A., Garner, Joseph P., Ahloy-Dallaire, Jamie

    Injurious aggression in group housed male laboratory mice is a common welfare issue that can also negatively affect study outcomes. Often, one mouse in the cage appears unwounded, and the current standard practice is to remove this presumed aggressor. This procedure is not based on empirical...

  15. Canine Aggression: Understanding Owner Beliefs about the Biological Locus of Origin for Rehabilitation of Aggressive Behavior

    Full-text: Available

    | Contributor(s):: Destiny DeHart

    The topic of canine aggression– threatening or hostile behavior involving actual and or potential harm to another – invokes many emotional responses due to the often violent connotations regarding aggressive canines. Research focusing on various methods of rehabilitation has...

  16. Could Animal-Assisted Therapy Help to Reduce Coercive Treatment in Psychiatry?

    | Contributor(s):: Widmayer, S., Borgwardt, S., Lang, U. E., Huber, C. G.

  17. Endogenous Oxytocin, Vasopressin, and Aggression in Domestic Dogs

    | Contributor(s):: MacLean, E. L., Martin, W. L., Gruen, M. E., Sherman, B. L., Gesquiere, L. R., Carter, C. S.

  18. Behavior Differences Between Search-and-Rescue and Pet Dogs

    Full-text: Available

    | Contributor(s):: Elizabeth Hare, Kathleen M. Kelsey, James A. Serpell, Cynthia M. Otto

    Behavioral traits such as trainability, fearlessness, and energy are required for dogs to succeed as search-and-rescue (SAR) dogs. Certification by the Federal Emergency Management Agency (FEMA) ensures that dogs and handlers have extensive training and have demonstrated specific skills in the...

  19. No better than flipping a coin: Reconsidering canine behavior evaluations in animal shelters

    Full-text: Available

    | Contributor(s):: Gary J. Patronek, Janis Bradley

    Use of behavior evaluations for shelter dogs has progressed despite their lack of scientific validation as reliable diagnostic tools. Yet results of these evaluations are often used to make life-and-death decisions. Despite acknowledging the significant limitations of evaluations, most authors...

  20. Aggression toward Familiar People, Strangers, and Conspecifics in Gonadectomized and Intact Dogs

    Full-text: Available

    | Contributor(s):: Parvene Farhoody, Indika Mallawaarachchi, Patrick M. Tarwater, James A. Serpell, Deborah L. Duffy, Chris Zink

    Gonadectomy is widely used to treat and prevent behavior problems including the aggressive behavior of dogs. The aim of this study was to determine whether aggressive behavior toward familiar people, strangers, or other dogs was significantly different in dogs gonadectomized at various ages vs....