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  1. Who turns to the human? Companion pigs' and dogs' behaviour in the unsolvable task paradigm

    Contributor(s):: Perez Fraga, P., Gerencser, L., Lovas, M., Ujvary, D., Andics, A.

  2. Efforts to Ban the Routine Tail Docking of Pigs and to Give Pigs Enrichment Materials via EU Law: Where Do We Stand a Quarter of a Century on?

    Full-text: Available

    | Contributor(s):: Elena Nalon, Nancy De Briyne

    In its role as guardian of the Treaties, the European Commission must ensure that Member States enforce EU law within their territories. If adequate enforcement is found to be wanting, the Commission also has the power to take infringement procedures as a corrective measure. The case of...

  3. Efecto de algunos factores genético-ambientales sobre el tamaño de camada al nacimiento en cerdos. I. Tamaño de la Camada Nacidos Vivos (TCNV)

    Full-text: Available

    | Contributor(s):: Romina Pía Aguirre Brockway

    Chile, según información reciente de USDA, se encuentra en el sexto lugar de los principales exportadores de carne porcina del mundo. Para responder a esta demanda, los productores de cerdos se han preocupado de mejorar sus índices productivos, entre los que se encuentra el...

  4. Reliability of Fear Assessment in Growing Pigs Exposed to a Novel Object Test in Commercial Conditions

    | Contributor(s):: Dalmau, Antoni, Mainau, Eva, Velarde, Antonio

    The objective of this study was to assess the reliability and feasibility of a novel object test assessing fear in pigs in commercial conditions. A total of 18 commercial farms were visited, and 321 pens housing 4,220 growing pigs were assessed. Three balloons were used as a novel stimulus....

  5. Does the location of enrichment material affect behavior and dirtiness in growing female pigs?

    | Contributor(s):: Dalmau, Antoni, Areal, Bruno, Machado, Silvana, Pallisera, Joaquim, Velarde, Antonio

    The objective of this study was to investigate if female growing pigs spend similar amounts of time exploring a wooden stick as they do exploring enrichment material regardless of its proximity to the feeder. Forty-eight pigs aged 18 to 26 weeks allocated to 16 pens with three pigs per pen were...

  6. Behavioral indicators of slow growth in nursery pigs

    | Contributor(s):: He, Yijie, Deen, John, Shurson, Gerald C., Li, Yuzhi Z.

    The objective of this study was to determine how feeder-space allowance affects behaviors of slow- and fast-growing pigs during the nursery period. Nursery pigs (n = 192; initial weight = 7.4 ± 1.6 kg) were housed in 24 pens of 8 pigs, with 12 pens provided with either a two-space feeder or a...

  7. Tail biting behaviour and tail damage in pigs and the relationship with general behaviour: Predicting the inevitable?

    | Contributor(s):: Ursinus, Winanda W., Van Reenen, Cornelis G., Kemp, Bas, Bolhuis, J. Elizabeth

    Tail biting behaviour in pigs is a common problem in conventional housing systems. Our study examined the consistency over time in tail biting and tail damage and it explored the predictive value of general behaviours observed in individual pigs and in pens as a whole. Pigs (n=480), reared in...

  8. Social learning of feeding behaviour in pigs: Effects of neophobia and familiarity with the demonstrator conspecific

    | Contributor(s):: Figueroa, Jaime, Solà-Oriol, David, Manteca, Xavier, Pérez, José Francisco

    Social interactions facilitate animals learning of new features of their environment minimizing a trial and error process. It has been observed in some species that food cues can be acquired by one individual (the observer) from an animal model (demonstrator) due to social learning. Three...

  9. Short- and long-term effects of eight enrichment materials on the behaviour of finishing pigs fed ad libitum or restrictively

    | Contributor(s):: Zwicker, Bettina, Gygax, Lorenz, Wechsler, Beat, Weber, Roland

    In a semi-natural environment, a lot of the daily activity of pigs is spent in exploratory and foraging behaviour. Providing enrichment material attractive to the pigs both over the short and long term is therefore important in intensive housing systems. This study aimed to investigate the effect...

  10. A review of behavioural methods to study emotion and mood in pigs, Sus scrofa

    | Contributor(s):: Murphy, Eimear, Nordquist, Rebecca E., van der Staay, Franz Josef

    The study of emotions in animals is of increasing importance to a number of disciplines such as animal welfare science and affective neuroscience. Pigs are a common farm animal species, most often reared in intensive systems. Moreover, they are increasingly being used in laboratories. To...

  11. Responses to novel situations of female and castrated male pigs with divergent social breeding values and different backtest classifications in barren and straw-enriched housing

    | Contributor(s):: Reimert, Inonge, Rodenburg, T. Bas, Ursinus, Winanda W., Kemp, Bas, Bolhuis, J. Elizabeth

    The growth of a pig is not only affected by its own genes, but also by the genes of its pen mates. This indirect effect on a pig's growth is represented as social breeding value (SBV) in a newly developed breeding model. It has been hypothesized that pigs could affect their pen mates’ growth...

  12. Responses of conventional pigs and Göttingen miniature pigs in an active choice judgement bias task

    | Contributor(s):: Murphy, Eimear, Nordquist, Rebecca E., van der Staay, Franz Josef

    Pigs are commonly kept in intensive farming systems. Their use as model animals in biomedical research has increased. Both conditions may impact upon their welfare. Recent definitions of welfare emphasize the importance of emotion. Mood congruent biases in judgement have been proposed as proxy...

  13. Nursing behaviour in lactating sows kept in isolation, in acoustic and visual contact

    | Contributor(s):: Šilerová, Jitka, Špinka, Marek, Neuhauserová, Kristýna

    Synchronization of nursings occurs between domestic lactating sows housed in one room. This study tested experimentally whether acoustic contact without any possibility to see other sows is sufficient for a high level of nursing synchronization. Secondly, the study investigated whether the...

  14. Measuring chronic social tension in groups of growing pigs using inter-individual distances

    | Contributor(s):: Turner, Simon P., Nath, Mintu, Horgan, Graham W., Edwards, Sandra A.

    Chronic social stress in pigs compromises immune function, reduces ADG, increases activity and skin lesions and affects feeding behaviour but to different extents in individuals and contemporary groups housed in the same way. Assessing the animals’ perception of chronic social stress is...

  15. Litter competition during nursings and its effect on sow response on Day 2 postpartum

    | Contributor(s):: Bozděchová, Barbora, Illmann, Gudrun, Andersen, Inger Lise, Haman, Jiří, Ehrlenbruch, Rebecca

    The aim of the present study was to assess neonatal sibling competition during nursing on Day 2 postpartum (pp) as well as its effect on the sow's responses. A total of 41 healthy loose-housed sows and their piglets were directly observed and video recorded for 6h on Day 2 pp. Piglet behaviours...

  16. The influence of a magnesium rich marine supplement on behaviour, salivary cortisol levels, and skin lesions in growing pigs exposed to acute stressors

    | Contributor(s):: O’Driscoll, Keelin, Teixeira, Dayane Lemos, O’Gorman, Denise, Taylor, Stephen, Boyle, Laura Ann

    Pigs in intensive production systems typically experience multiple acute stressors which can have a negative impact on their welfare. This study investigated whether a magnesium (Mg) rich marine extract (SUPPLEMENT) could reduce the negative effects of mixing and an out-of-feed event on pig...

  17. How much is enough? The amount of straw necessary to satisfy pigs’ need to perform exploratory behaviour

    | Contributor(s):: Pedersen, Lene J., Herskin, Mette S., Forkman, Björn, Halekoh, Ulrich, Kristensen, Kristian M., Jensen, Margit B.

    Since 10 years, EU-legislation states that ‘pigs must have permanent access to sufficient quantity of material to enable proper investigation and manipulation activities’. While much research has focused on which materials ‘enable proper investigation and manipulation activities’, little has been...

  18. Group suckling cohesion as a prelude to the formation of teat order in piglets

    | Contributor(s):: Skok, Janko, Škorjanc, Dejan

    During the lactation period, piglets experience intense social interactions with their littermates until they establish a reliable teat order on the mother's udder. Here, we examined group suckling cohesion in piglet littermates, an order mechanism that refer to the maintenance of significantly...

  19. Genetic analysis of the individual pig behaviour in backtests and human approach tests

    | Contributor(s):: Scheffler, K., Stamer, E., Traulsen, I., Krieter, J.

    The most recent development in pig production has focused increasingly on the well-being of the individual pig and animal-friendly housing conditions, i.e. the launch of the group housing of sows in the EU. In this regard, however, standard procedures which may be stressful to the animals and...

  20. Formation of teat order and estimation of piglets’ distribution along the mammary complex using mid-domain effect (MDE) model

    | Contributor(s):: Skok, Janko, Škorjanc, Dejan

    Domestic piglets (Sus scrofa domesticus) establish relatively stable teat order after the first week postpartum. Formation of teat order is normally accompanied by intense competition between littermates. In this period, piglets’ behaviour and their distribution along the mammary complex is...