Aggressive behavior in two different group-housing systems for pregnant sows
Contributor(s):: Chapinal, N., Ruiz-de-la-Torre, J. L., Cerisuelo, A., Gasa, J., Baucells, M. D., Manteca, X.
The study housed 120 pregnant sows from Day 29 of pregnancy to 1 week before parturition either in groups of 10 with trickle feeding (TRICKLE) or in groups of 20 with an unprotected electronic sow feeding (FITMIX). The study recorded aggressive interaction on 11 nonconsecutive days. Frequency of...
Feeder use patterns in group-housed pregnant sows fed with an unprotected electronic sow feeder (Fitmix)
Contributor(s):: Chapinal, N., Ruiz-de-la-Torre, J. L., Cerisuelo, A., Baucells, M. D., Gasa, J., Manteca, X.
Previous studies on feeder use in group-housed pregnant sows focused on dynamic groups and protected electronic sow feeders (ESF). This study observed 60 pregnant sows, 1st to 8th parity - housed from Day 29 of pregnancy to 1 week before parturition in stable groups of 20 animals, 1 Fitmix feeder...
If you knew what was good for you! The value of environmental enrichments with known welfare benefits is not demonstrated by sows using operant techniques
Contributor(s):: Elmore, M. R. P., Garner, J. P., Johnson, A. K., Kirkden, R. D., Richert, B. T., Pajor, E. A.
This study assessed the motivation of gestating sows housed in standard, barren gestation stalls (used for breeding/implantation and/or gestation) for access to environmental enrichment. Enrichment consisted of a cotton rope or rubber mat in comparison to positive (additional food when fed at...
Production costs and animal welfare for four stylized hog production systems
Contributor(s):: Seibert, L., Norwood, F. B.
Nonhuman animal welfare is arguably the most contentious issue facing the hog industry. Animal advocacy groups influence the regulation of hog farms and induce some consumers to demand more humane pork products. Hog producers are understandably reluctant to improve animal well being unless the...
Interaction between sows' aggressiveness post mixing and skin lesions recorded several weeks later
Contributor(s):: Tonepohl, B., Appel, A. K., Voss, B., Borstel, U. K. von, Gauly, M.
A review of the welfare consequences of surgical castration in piglets and the evaluation of non-surgical methods
Contributor(s):: Prunier, A., Bonneau, M., Borell, E. H. von, Cinotti, S., Gunn, M., Fredriksen, B., Giersing, M., Morton, D. B., Tuyttens, F. A. M., Velarde, A.
Influence of teeth resection on the skin temperature and acute phase response in newborn piglets
Contributor(s):: Llamas Moya, S., Boyle, L. A., Lynch, P. B., Arkins, S.
Alternative housing for sows and litters. Part 4. Effects of sow-controlled housing combined with a communal piglet area on pre- and post-weaning behaviour and performance
Contributor(s):: Weary, D. M., Pajor, E. A., Bonenfant, M., Fraser, D., Kramer, D. L.
Previous experimental work has shown modest and variable production and welfare benefits for the lactating sow and piglets when sows are allowed to separate themselves temporarily from their piglets, or when piglets have access to a communal creep area sufficiently attractive that they spend...
Alternative housing for sows and litters. Part 5. Individual differences in the maternal behaviour of sows
Contributor(s):: Pitts, A. D., Weary, D. M., Fraser, D., Pajor, E. A., Kramer, D. L.
'Sow-controlled' housing has been developed to address welfare and production concerns associated with close confinement of the lactating sow and her litter, by permitting the sow to leave the litter at will. However, there is a risk that variation in the use of the piglet-free ('get-away') area...
Further evaluation of the developmental asynchrony hypothesis of sex ratio variation
Contributor(s):: Krackow, S.
A discussion of differences in the speed of development of male and female blastocysts up to the stage of uterine implantation compared with the developmental stage of the uterus may cause sex ratio biases in response to environmental, physiological and psychological cues. It may also cause sub...
Genetic analysis of reactivity to humans in Goettingen minipigs
Contributor(s):: Kohn, F., Sharifi, A. R., Simianer, H.
Goettingen minipigs are laboratory animals with an increasing demand over the last few years. At the moment, Goettingen minipigs are not selected for a low reactivity to humans and this trait is not included in the breeding programme. However, it is obvious that there is a need for genetically...
Individual differences in the behaviour of sows at the nest-site and the crushing of piglets
Contributor(s):: Wechsler, B., Hegglin, D.
Continuous 24-h video recordings were made of 11 loose-housed sows and their litters during parturition, and during the following 10 days. Each sow and litter were kept in a pen with a straw-bedded nest-site. Piglets were defined as in danger of being crushed if they were trapped by the sow's...
Oestrus and mating behaviour in gilts during boar induced puberty in relation to stress and housing
Contributor(s):: Pedersen, L. J., Jensen, K. H., Giersing Linder, A.
The effect of intermittent electroshock and individual vs. pair housing on sexual proceptive behaviour was studied in 48 large White x Danish Landrace gilts. In addition, the effect of intermittent electroshock on the behavioural response to boar stimulation and on sexual receptivity during first...
Pain and discomfort in male piglets during surgical castration with and without local anaesthesia as determined by vocalisation and defence behaviour
Contributor(s):: Leidig, M. S., Hertrampf, B., Failing, K., Schumann, A., Reiner, G.
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...
Peri-partum posture and behaviour of gilts and the location of their piglets in lines selected for components of efficient lean growth
Contributor(s):: McPhee, C. P., Kerr, J. C., Cameron, N. D.
Peri-partum posture and behaviour of gilts from lines selected for different components of efficient lean growth were studied to determine if behavioural changes may have been associated with the observed responses in reproductive performance. The proportions of time that gilts expressed defined...
Sow behaviour during parturition in relation to the observed and the genetic merit for weaning survival
Contributor(s):: Uitdehaag, K. A., Ekkel, D., Kanis, E., Knol, E.
The sow's breeding value for mothering ability (EBVma) can be estimated as the genetic effect of the foster sow on piglet survival at weaning. Sows with a high EBVma have litters with a short average interval from birth until first colostrum intake. In the present study, it was investigated...
Sow behaviour involved in the crushing of piglets in outdoor farrowing huts - a brief report
Contributor(s):: Vieuille, C., Berger, F., Pape, G. le, Bellanger, D.
This study focuses on maternal activities involved in the trapping of piglets by the sow's body in outdoor farrowing systems and examine the mother-piglet context leading either to the death of piglets or to their survival. The behaviour of six Large-White x Landrace sows and their litters was...
Sow behaviour towards humans during standard management procedures and their relationship to piglet survival
Contributor(s):: Lensink, B. J., Leruste, H., Bretagne, T. de, Bizeray-Filoche, D.
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...
The influence of adverse or gentle handling procedures on sexual behaviour in fearful and confident sows
Contributor(s):: Pedersen, L. J., Damm, B. I., Kongsted, A. G.
In the present study, the influence of handling during lactation on fear of humans and on sexual behaviour in the presence and absence of a human was investigated. Prior to handling, the sows were selected as being either fearful (n=24) or confident (n=24) towards humans based on their reactions...
Validation of an automatic system to detect position changes in puerperal sows
Contributor(s):: Mainau, E., Dalmau, A., Ruiz-de-la-Torre, J. L., Manteca, X.
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...