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  1. swine x
  1. The use of olfactory and other cues for social recognition by juvenile pigs

    Social recognition is essential for the maintenance of a stable group structure. Failure to recognise familiar conspecifics in social groups of juvenile pigs may initiate agonistic encounters that can compromise welfare and productivity. Current housing systems may allow build up of atmospheric...

  2. Effects of early contact between non-littermate piglets and of the complexity of farrowing conditions on social behaviour and weight gain

    In this study we tested if contact possibilities between non-littermate piglets and complexity of farrowing conditions affect the pre- and post-weaning behaviour, weight gain and skin lesions of piglets. Suckling sows were either kept in a group housing system (GH), in a single pen loose housing...

  3. Disturbance effects of environmental stimuli on pig spatial memory

    Ten male pigs were trained to perform a win-shift foraging task in an 8-arm radial maze. Each day, they individually entered the maze to search for food randomly located in 4 of the 8 arms (search). After finding and eating the food, they were returned to their home pens for a retention interval...

  4. A note on simulating the 'observer effect' using constant photoperiod on nursery pigs

    Often, researchers using video cameras to record animal behaviour must resort to illuminating the environment to obtain data during the night hours. This study was designed to determine if the behaviour of pigs is altered by constant illumination. Pigs (24+or-0.95 days of age, 5.58+or-0.18 kg)...

  5. Effects of floor-feeding and the presence of a foraging substrate on the behaviour and stress physiological response of individually housed gilts

    Both restricted feeding and barren housing have a negative influence on sow welfare. The aim of this study was to test whether sows that have to search for their feed in a substrate on the floor show less stereotyped (and other abnormal) behaviour and have a lower physiological stress response....

  6. Pain and discomfort in male piglets during surgical castration with and without local anaesthesia as determined by vocalisation and defence behaviour

    Surgical castration of male piglets without anaesthesia is routine in domestic pig production causing serious distress and impairment of welfare. Thus, the EU is seeking alternatives, with local anaesthesia being one of the possible candidates. The aim of the present study was to compare surgical...

  7. Sow behaviour towards humans during standard management procedures and their relationship to piglet survival

    Piglet crushing remains a major problem in pig production and is partly related to sow behavioural traits. The sows' responses to the presence of humans around farrowing could partly contribute to piglet crushing through increased reactivity and getting up and lying down behaviour. The aim of the...

  8. Assessment of acute pain experienced by piglets from ear tagging, ear notching and intraperitoneal injectable transponders

    Suckling piglets are routinely identified to assist with their day-to-day management. A total of 120 suckling piglets were used to determine and compare the short-term pain responses to a number of identification methodologies, including: ear notching, ear tagging and intraperitoneal injection...

  9. Frustration of goal-directed behaviour in swine

    Eighteen grower pigs were starved for 1, 2 or 3 h each morning by removing the feeders. On training days, Monday and Tuesday of each week, full feeders were returned to the pigs. On test days, Wednesday to Friday of each week, nonfunctional feeders were placed in the pens. Pigs were videotaped...

  10. Analysis of belly nosing and associated behaviour among pigs weaned at 12-14 days of age

    Segregated early weaning is a means of improving disease control and performance in pigs. However, it has been linked to an increased incidence of anomalous behaviours, which raises welfare concerns. A common anomalous behaviour in early-weaned pigs is belly nosing, but the key causal factors of...

  11. Effects of previous housing system on agonistic behaviors of growing pigs at mixing

    Previous studies indicated that rearing environment in early life affects behavioral development, which consequently modifies behavioral response of pigs to stressful environments in later stages of the production. A study was conducted to investigate effects of group-farrowing system on behavior...

  12. Validation of an automatic system to detect position changes in puerperal sows

    Piglet crushing by the sow is one of the main causes of piglet mortality during the first 48 h after birth. The frequency of position changes may be partially related to the pain caused by farrowing. The aim of this study was to develop and validate an automatic system to register position...

  13. Cross-suckling and nursing synchronisation in group housed lactating sows

    Group housing systems for lactating sows with piglets enable the animals to behave more naturally than traditional restrictive systems. However, piglets may occasionally suckle from other sows than their mother. The influence of litter size, age of the litter, mother parity, piglet gender and, in...

  14. The effects of housing on heart rate of gestating sows during specific behaviours

    The heart rates of 21 sows in 3 different dry sow housing systems (7 sows per housing system) were measured during feeding, drinking, rooting and lying with eyes open. Measurements were made on sows kept in: a large group of 37 with an electronic sow feeder; small groups of 5, with individual...

  15. Vocalisations of the adult female domestic pig during a standard human approach test and their relationships with behavioural and heart rate measures

    Vocal communication in the domestic pig is generally not well documented. The aim of this experiment was to categorise and ascribe the function of the vocalisations of 67 Large White x Landrace gilts during a standard human approach test. At testing, each group of 3-5 gilts was moved to a...

  16. A note on the effect of gestation housing environment on approach test measures in gilts

    Systems' welfare evaluation, including behavioural testing, is becoming increasingly popular in farm animal assurance schemes. The aims of this study were to investigate whether fairly short-term exposure to gestation housing systems, which varied in physical, environmental and human-input...

  17. Do the stereotypies of pigs, chickens and mink reflect adaptive species differences in the control of foraging?

    Species differences in food-related stereotypies and natural foraging behaviour are discussed, and evolutionary explanations for these species differences, and reasons why apparent species differences in stereotypy may be artefacts of husbandry are postulated.

  18. Individual differences in responses of piglets to weaning at different ages

    Several studies indicate each piglet within a litter is affected differently by weaning and that these individual responses may be altered by the age of the litter at weaning. In the present study, eight litters of individually marked piglets (n=79) were randomly assigned to be weaned at 21 or 35...

  19. Characteristics of wild pig farrowing nests and beds in the upper Coastal Plain of South Carolina

    Thirteen farrowing nests and 9 resting/loafing beds built by wild pigs (Sus scrofa) from an introduced population in South Carolina, USA, were studied with respect to physical description, size parameters, the animals involved, and adjacent surroundings. The nests, built by pre-parturition sows,...

  20. An investigation into the effect of different protein and energy intakes on model tail chewing behaviour of growing pigs

    Twenty-four crossbred pigs were housed individually and allocated at 62 kg (S.E.M.=0.81) to one of three diets providing differing daily protein and energy intakes: control (C) 1.42 g CP/MJ DE, fed to provide 2.85 maintenance energy; low protein (LP) 0.76 g CP/MJ DE fed to provide the same daily...