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  1. Weaning and separation stress: maternal motivation decreases with litter age and litter size in farmed mink

    Contributor(s):: Malmkvist, Jens, Sørensen, Dennis D., Larsen, Torben, Palme, Rupert, Hansen, Steffen W.

    The optimal timing of separating the mink dam from the litter is suggested to be a balance between the partly conflicting needs of the mother and the kits. Early removal of the dam or partial removal of the litter may protect the dam against exhaustion. Little is, however, known about dam stress...

  2. Does litter size affect emotionality, spatial learning and memory in piglets?

    Contributor(s):: Fijn, Lisa, Antonides, Alexandra, Aalderink, Dave, Nordquist, Rebecca E., van der Staay, Franz Josef

    Average litter size has steadily increased over the past decades in the pig farming industry. Large litters are associated with an increase of piglets born with a lower birth weight and reduced overall piglet viability. The aim of our study was to investigate whether litter size affects...

  3. Prolonged nest building increase the reproductive outcome in American female mink

    Contributor(s):: Schou, Toke Munk, Palme, Rupert, Malmkvist, Jens

    The timing of the onset of maternal-related nest building in American mink is unknown, and it is expected that farmed mink are highly motivated to perform nest building during times with restricted access to nesting material on mink farms. Not fulfilled motivations due to thwarting can lead to...

  4. The long-term impact of infant rearing background on the affective state of adult common marmosets ( Callithrix jacchus)

    Contributor(s):: Ash, H., Buchanan-Smith, H. M.

    Early life environment, including temporary family separation, can have a major influence on affective state. Using a battery of tests, the current study compared the performance of adult common marmosets ( Callithrix jacchus), reared as infants under 3 different conditions: family-reared twins,...

  5. Piglets call for maternal attention: vocal behaviour in Sus scrofa domesticus is modulated by mother's proximity

    Contributor(s):: Iacobucci, P., Colonnello, V., D'Antuono, L., Cloutier, S., Newberry, R. C.

    Plasticity in the production of "separation distress" vocalizations, and seeking of caregivers beyond mere satisfaction of immediate physiological needs, are manifestations of attachment that we investigated in the domestic pig ( Sus scrofa domesticus). Female piglets from eight litters were...

  6. Evidence for litter differences in play behaviour in pre-weaned pigs

    Contributor(s):: Brown, S. M., Klaffenbock, M., Nevison, I. M., Lawrence, A. B.

    The aim of this study was to analyse spontaneous play behaviour in litters of domestic pigs ( Sus scrofa) for sources of variation at individual and litter levels and to relate variation in play to measures of pre and postnatal development. Seven litters of commercially bred piglets ( n=70) were...

  7. Comparison of the behaviour of piglets raised in an artificial rearing system or reared by the sow

    Contributor(s):: Rzezniczek, M., Gygax, L., Wechsler, B., Weber, R.

    Over the last 15 years, rising sow fertility has led to a considerable increase in litter size. As a consequence, the number of live born piglets may outnumber the number of functional teats, and surplus piglets are removed from the sow at the age of 3-6 days and fed with artificial milk. The...

  8. Early transfer of mated females into the maternity unit reduces stress and increases maternal care in farm mink

    Contributor(s):: Malmkvist, J., Palme, R.

    Mated mammals on farms are typically transferred to another housing environment prior to delivery. We investigated whether the timing of this transfer - EARLY (Day -36), INTERMEDIATE (Day -18), or LATE (Day -3) relative to the expected day of birth (Day 0) - affects maternal stress, maternal care...

  9. Effect of different management techniques to enhance colostrum intake on piglets' growth and mortality

    Contributor(s):: Muns, R., Manteca, X., Gasa, J.

    An experiment was conducted to study the effect four different management techniques to enhance colostrum intake had on piglet and litter performance. Treatments were performed on piglets born weighing 1.30 kg or less (SP) within 6 h of birth: control group (CON); split-nursing of the litter for...

  10. Effects of stage of gestation at mixing on aggression, injuries and stress in sows

    Contributor(s):: Stevens, B., Karlen, G. M., Morrison, R., Gonyou, H. W., Butler, K. L., Kerswell, K. J., Hemsworth, P. H.

    Confinement of breeding sows to stalls is a controversial welfare issue, and there is a worldwide move to house gestating sows in groups. We examined the effects of day of mixing following insemination on aggression, injuries and stress in sows. A total of 800 sows were used in this experiment...

  11. The reliability of welfare assessment according to the WelFur-protocol in the nursing period of mink (Neovison vison) is challenged by increasing welfare problems prior to weaning

    Contributor(s):: Henriksen, B. I. F., Moller, S. H.

    The objective of this study was to test the hypothesis that the body condition of the mink dam, the frequency of dirty nests, frequency of injuries and diarrhoea change significantly with the day of assessment, post-partum, within the data collection period from parturition to weaning,...

  12. Early human handling in non-weaned piglets: effects on behaviour and body weight

    Contributor(s):: Oliveira, D. de, Costa, M. J. R. P. da, Zupan, M., Rehn, T., Keeling, L. J.

    Early handling of animals including tactile stimulation (TS) has been shown to have beneficial effects on the physical and psychological development of species where considerable maternal interaction, e.g. in the form of licking, already occurs. But little is known about the magnitude of these...

  13. Effects of prepartum housing environment on abnormal behaviour, the farrowing process, and interactions with circulating oxytocin in sows

    Contributor(s):: Yun, JinHyeon, Swan, K. M., Oliviero, C., Peltoniemi, O., Valros, A.

    We evaluated the effects on sows of prepartum housing environment on bar-biting (BB) behaviour prior to parturition, farrowing duration from first to tenth piglets, litter size, and circulating oxytocin (OT) concentrations during birth of the first five piglets. A total of 35 sows, approximately...

  14. Evaluating the effect of semi-group housing of rabbit does on their offspring's fearfulness: can we use the open-field test?

    Contributor(s):: Buijs, S., Tuyttens, F. A. M.

    Breeding does are usually housed one doe per cage, but there is an increased interest in (semi-)group housing systems designed to improve welfare. However, there is a lack of information on how such systems actually affect different aspects of rabbit welfare. We aimed to discern differences in...

  15. The influence of neonatal environment on piglet play behaviour and post-weaning social and cognitive development

    Contributor(s):: Martin, J. E., Ison, S. H., Baxter, E. M.

    Research has shown that the domestic pig is highly playful throughout its development and that play is an important aspect of social and cognitive development. Therefore, the neonatal environment is fundamental to successful stimulation of play in neonatal pigs, which could have indirect and...

  16. Do male mice prefer or avoid each other's company? Influence of hierarchy, kinship, and familiarity

    Contributor(s):: Loo, P. L. P. van, Groot, A. C. de, Zutphen, B. F. M. van, Baumans, V.

    In the laboratory, individual housing of male mice who otherwise show aggression is common practice. Because mice are a social species, the question arises whether this procedure is right from the animals' point of view. This study tested the preference of subordinate animals for their dominant...

  17. Dog breeding in New Providence, the Bahamas, and its potential impact on the roaming dog population I: planned and accidental

    Contributor(s):: Fielding, W. J.

    This article reports the first known study on dog breeding in an Afro-Caribbean community. The study obtained the information on 517 matings through interviews with dog caregivers. Few litters (6.8%) from mongrels (potcakes) resulted from planned matings, whereas 66.5% of matings between purebred...

  18. Increasing the frequency of co-mingling piglets during the lactation period alters the development of social behavior before and after weaning

    Contributor(s):: Kanaan, V. T., Lay, D. C., Jr., Richert, B. T., Pajor, E. A.

    The purpose of this study was to determine how increasing the frequency of co-mingling affected piglets' behavior development before and after weaning. Co-mingling once (CM1), piglets interacted with 1 unfamiliar litter Days 10-18 after birth; co-mingling twice (CM2), piglets interacted with 1...

  19. Socialization of a single hand-reared tiger cub

    Contributor(s):: Kelling, A. S., Bashaw, M. J., Bloomsmith, M. A., Maple, T. L.

    Given the drawbacks of hand-rearing nonhuman animals in captivity, the practice is generally avoided, but it is sometimes necessary. A few scientific publications are available to guide managers toward best practices in hand-rearing, but the majority of articles focus on hand-rearing captive...

  20. Comparison of early socialization practices used for litters of small-scale registered dog breeders and nonregistered dog breeders

    Contributor(s):: Korbelik, J., Rand, J. S., Morton, J. M.

    Objective - To compare early socialization practices between litters of breeders registered with the Canine Control Council (CCC) and litters of nonregistered breeders advertising puppies for sale in a local newspaper. Design - Retrospective cohort study. Animals - 80 litters of purebred and...