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  1. Personality traits and the effects of DHA supplementation in the budgerigar (Melopsittacus undulatus)

    Contributor(s):: Callicrate, Taylor Eilers, Siewerdt, Frank, Koutsos, Elizabeth, Estévez, Inma

    We investigated the hypotheses that a bold-shy personality axis exists in the budgerigar (Melopsittacus undulatus) and that dietary docosahexaenoic acid (DHA) supplementation has a significant effect on budgerigar personality and immune responses. DHA is an integral component of the brain known...

  2. Nest sharing under semi-natural conditions in laying hens

    Contributor(s):: Riber, Anja Brinch

    Under natural conditions, the feral hen (Gallus gallus domesticus) will choose a nest location away from the flock, whereas under commercial conditions, the domestic hen will often choose the same nest as other hens have used or are still using. Simultaneous nest sharing causes several welfare...

  3. Difference of social motivation in quail selected for divergent circadian activity

    Contributor(s):: Formanek, Laureline, Richard-Yris, Marie-Annick, Petton, Christophe, Houdelier, Cécilia, Lumineau, Sophie

    Endogenous rhythms are adaptive responses to predictable changes of the environment, like the day/night cycle. Some researches demonstrated that social cycles can influence the circadian rhythm, while no study investigated the effect of endogenous rhythmicity on the sociability in Vertebrates....

  4. Comparing fostering success between wild-caught and game farm bred captive red-legged partridges (Alectoris rufa, L.)

    Contributor(s):: Sánchez-García, Carlos, Alonso, Marta Elena, Pérez, José Antonio, Rodríguez, Pedro Luis, Gaudioso, Vicente Ramiro

    As fostered game birds are better prepared for releasing in comparison to those intensively reared, fostering of wild and game farm red-legged partridges (Alectoris rufa) was studied on a semi-natural rearing farm using farm-hatched chicks. Parent pairs, barren pairs and single individuals from...

  5. Parroting patriots: interspecies trauma and becoming-well-together

    Contributor(s):: Bolman, B.

  6. More eggs but less social and more fearful? Differences in behavioral traits in relation to the phylogenetic background and productivity level in laying hens

    Contributor(s):: Dudde, Anissa, Schrader, Lars, Weigend, Steffen, Matthews, Lindsay R., Krause, E. Tobias

    Different lines of laying hens have undergone a strong selection pressure for productivity traits, which has been proposed as a potential cause of undesirable side effects like behavioural disorders. One reason for such behavioral changes might be due to energy trade-offs, as high productive...

  7. Flock size during rearing affects pullet behavioural synchrony and spatial clustering

    Contributor(s):: Keeling, Linda J., Newberry, Ruth C., Estevez, Inma

    Animals are often synchronised in their behaviour, with costs and benefits varying according to group size and the behaviour being performed. Making decisions about optimal allocation and distribution of resources to animals in our care therefore poses theoretical and practical challenges. We...

  8. Social bonds in a flock bird: Species differences and seasonality in social structure in captive flamingo flocks over a 12-month period

    Contributor(s):: Rose, Paul E., Croft, Darren P.

    Social network analysis (SNA) is a popular tool for investigating key components of sociality in free-living populations, and is growing in its application to captive animal systems. For social species held in captivity, welfare may be improved if protocols for care take key aspects of sociality...

  9. Exposing avian embryos to light affects post-hatch anti-predator fear responses

    Contributor(s):: Archer, Gregory S., Mench, Joy A.

    Environmental stimuli present during incubation can impact the behavior of birds post-hatch. To determine the effect of exposing broiler chicken embryos to light on fear-related behavior post-hatch, we conducted two experiments in which we incubated eggs under various light schedules, and then...

  10. The effect of auditory enrichment, rearing method and social environment on the behavior of zoo-housed psittacines (Aves: Psittaciformes); implications for welfare

    Contributor(s):: Williams, Isabelle, Hoppitt, Will, Grant, Rachel

    The psychological and physiological effects of different genres of music are well documented in humans. These concepts have also been studied in kenneled dogs and some exotic animals, implying that animals may experience benefits similar to those of humans. This study tested the hypothesis that...

  11. Effects of visual obstruction, prey resources, and satiety on bird use of simulated airport grasslands

    Contributor(s):: Blackwell, Bradley F., Seamans, Thomas W., Linnell, Kimberly, Kutschbach-Brohl, Lisa, DeVault, Travis L.

    Grasslands represent 39%–50% of U.S. airport properties, and a recent management framework recommended exploiting both antipredator behaviours and food resources in airport grasslands to curb use by birds considered hazardous to aviation safety. We evaluated framework predictions empirically by...

  12. The effects of housing conditions on judgement bias in Japanese quail

    Contributor(s):: Horváth, Mária, Pichová, Katarína, Košťál, Ľubor

    The interaction between cognition and emotions represents previously unforeseen source of information for the animal welfare science. The prototype study of Harding et al. (2004) draw the attention of many researchers to the phenomenon of cognitive bias in animals. Their original approach using...

  13. Unpredictable and repeated negative stimuli increased emotional reactivity in male quail

    Contributor(s):: Favreau-Peigné, Angélique, Calandreau, Ludovic, Constantin, Paul, Bertin, Aline, Arnould, Cécile, Laurence, Agathe, Richard-Yris, Marie-Annick, Houdelier, Cécilia, Lumineau, Sophie, Boissy, Alain, Leterrier, Christine

    Chronic stress is considered detrimental for an individual as it is a long-lasting negative emotional state, without or with a limited habituation. The reactivity and sensitivity of animals to stressors depend on the animal⿿s organismic characteristics such as sex. In poultry, the studies dealing...

  14. Environmental enrichment for parrot species: Are we squawking up the wrong tree?

    Contributor(s):: Rodríguez-López, Rogelio

    Parrots are kept in zoos, homes and laboratories for conservation, companionship and research purposes. The intelligence, longevity and behaviour of parrots raise concerns for keeping them in these environments. Captive settings may limit the expression of normal behaviours and, as a consequence,...

  15. Using Feminist Theories to Explore Human-animal Relationships: Pigeons in the City

    Full-text: Available

    | Contributor(s):: Yue Yin

    The unequal human-animal relationships regard human beings as superior to other species. They exit in various kinds of human-animal interactions (i.e. our consumption of animal products, and our use of animals as tools or entertainment). This human-dominant relationship is the result of the...

  16. Improving ostrich welfare by developing positive human-animal interactions

    Full-text: Available

    | Contributor(s):: Pfunzo Tonny Muvhali

    Animal welfare has recently gained significant attention in commercial livestock industries worldwide. Specifically, several studies involving husbandry practices with positive human-animal interactions have shown a favourable link between improved animal welfare and production. However,...

  17. Foster parenting, human imprinting and conventional handling affects survival and early weight of ostrich chicks

    Full-text: Available

    | Contributor(s):: MD Wang, SWP Cloete, K Dzama, M Bonato, IA Malecki

    The effects of human imprinting and foster parenting by adult ostriches on the survival and growth performance of ostrich chicks were compared to conventional chick-rearing practices in two separate experiments. In the first experiment, the growth rate and survival of chicks imprinted onto...

  18. Measuring welfare in captive flamingos: Activity patterns and exhibit usage in zoo-housed birds

    | Contributor(s):: Rose, Paul E., Brereton, James E., Croft, Darren P.

    Birds do not always feature heavily in zoo-based welfare and behaviour research. Studying how individuals use the space provided to them helps inform captive care and enables objective measurement of animal welfare. The aim of this study was to determine the variables that influence how flamingos...

  19. Mate choice in red-legged partridges (Alectoris rufa L.) kept in commercial laying cages; does it affect laying output?

    | Contributor(s):: Prieto, Raquel, Sánchez-García, Carlos, Tizado, Emilio J., Alonso, Marta E., Gaudioso, Vicente R.

    In some gamebirds reared for shooting purposes, it has been demonstrated that free pairing and enriched environment may improve welfare. However, the effects of free pairing on the laying output of birds kept in commercial laying cages are poorly understood. Thus, the effects of free pairing on...

  20. The effect providing space in excess of standards on the behaviour of budgerigars in aviaries

    | Contributor(s):: Phillips, Clive J. C., Farrugia, Cameron, Lin, Chun-han, Mancera, Karen, Doneley, Bob

    Budgerigars housed in conventional cages have no opportunity for some normal behaviours, in particular flight, and develop stereotyped behaviours. Increasingly aviaries are used for groups of budgerigars but the minimum space requirement to support normal behaviour is not known. We compared the...