Peri-parturient changes in behaviour in free-ranging domestic pigs
ABSTRACT The behaviour of 6 Swedish Landrace gilts in enclosures of 7 and 13 ha was studied for 7 h per day during 7 days around farrowing time. A significant increase in the frequency of locomotion was recorded 2 days before farrowing. The distances walked, as measured by number of coordinates crossed per day, increased during the same period. Average distances to nearest neighbours increased significantly 1 day before farrowing. The farrowing nests, which were built on the day before farrowing or on the farrowing day, were all situated well away from the normal home range. It is suggested that the motivation for this increase in mobility, with the apparent function to isolate the nest site from the rest of the herd, is the explanation of the increse in activity frequently recorded in sows in pens during the days before farrowing. The functional significance and the practical consequences of these behaviour patterns are discussed.
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ABSTRACT: A new class of anti-biofilm compounds possessing 1,4-disubstituted-(1H)-1,2,3-triazolic cores was designed. Their efficient synthesis was performed by means of click chemistry through 1,3-dipolar cycloadditions. Two compounds were found to act as specific anti-biofilm agents against a gram negative species.Bioorganic & medicinal chemistry letters 03/2011; 21(5):1493-7. · 2.65 Impact Factor
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ABSTRACT: Patterns of maternal behaviour are strongly related to reproductive abilities in sows. Prepartal behaviour of sows is mainly characterised by nest-building activities, resulting in a nest that provides shelter for the piglets. In the course of domestication, sows have not lost their instinctive behaviour to nest-build, but perform at least elements of it when appropriate space and materials are available. The onset and performance of nest-building is both stimulated internally via hormones and externally via feedback from the environment. With this environmental influence, the possibilities to perform nest-building can be restricted to different extents in commercially farmed pigs. The aim of the present review is to point out the sow's need for nest-building performance as part of the natural behaviour pattern, although they are kept in different modern housing systems. With regard to increased demands for animal welfare and following changes in the legislation for pig husbandry, possible consequences for different housing systems are discussed.Livestock Science - LIVEST SCI. 01/2009; 124(1).
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ABSTRACT: In the U.S.A., housing for the lactating sow and her piglets can be divided into five main areas. Total confinement, defined as the farrowing crate, houses the highest number of sows at 83.4 AE 4.0%. Remaining operations house fewer sows with open buildings that have outside access at 12.4 AE 4.1%, open building with no outside access, 2.9 AE 0.5%, lot with hut or no building, 0.6 AE 0.2% and pasture with hut or no building the lowest at 0.7 AE 0.3% (NAHMS, 2000). In the U.K., it is estimated that around 70% of sows farrow in crates, 27% farrow outdoors in farrowing arks and only 3% farrow in loose-housed indoor systems (BPEX, 2004). Farrowing crates have become widely accepted by the industry for numerous reasons: it has made sow management easier, it allows for a higher stocking density of sows/unit of land and it can help to reduce piglet mortality (Fraser and Broom, 1997). However, the farrowing crate has received criticism due to potential detrimental effects it may inflict on the welfare of the sow. The prevalence of decubital ulcers (Davies et al., 1996; Rountree et al., 1997), behaviours considered maladaptive (Cronin and Wiepkema, 1984; Rushen, 1984; Haskell and Hutson, 1996), and a limitation on allowing the sow complete postural adjustments are a few considerations. The development of an alter-native, economical farrowing system that retains the advantages of the conven-tional farrowing crate could be beneficial to the industry (Collins, 1987). Alternative outdoor swine operations for the gestating sow are increasing in popularity in some countries. In 1975, only 6% of the U.K.'s national herd was housed outdoors. This trend can be seen in other European countries, France now houses 10% of its herd outdoors, and Denmark and Sweden are conduct-ing feasibility studies to determine if their cooler climates would permit01/2009: pages 141-188; , ISBN: 978-1-4020-8908-4