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Transfer of Lactic Acid Bacterial Strains from the Feed to the Sow, the Environment, and the Piglets
Spredning af mælkesyrebakterier fra foderet til soen, miljøet og grisene
Acta Veterinaria Scandinavica volume 33, pages 297–303 (1992)
Abstract
The spread of lactic acid bacterial strains to the environment and to newborn piglets was investigated after feeding of such strains to sows. Rifampicin resistant bacterial strains were fed to sows, 1010 c.f.u. per day, during the period from 1 week before expected farrowing until 1 week after farrowing. Fecal samples from the sows and samples of litter were collected for bacteriological examination together with swabs from the pens, the skin of the sows, and from the rectum of the piglets. The test strains were only excreted in relatively low amounts in the feces of the sows, approximately 103 −106 c.f.u. per gram. They were not able to displace the normal lactic acid bacterial flora in the sows nor were they transmitted to the intestinal tract of the piglets to any significant extent. After the last administration the test strains disappeared from both feces, skin, and environment, indicating that no permanent colonization had taken place, although considerable differences in duration of persistence were noticed between test strains.
Sammendrag
Spredningen af stammer af mælkesyrebakterier til miljøet og pattegrisene blev undersøgt efter tildeling af stammerne til søerne via foderet. Rifampicinresistente teststammer blev i mængder af 1010 c.f.u. pr. dag tildelt søerne fra en uge før forventet faring til en uge efter faring. Fæcesprøver fra søerne og prøver af strøelsen blev udtaget til bakteriologisk undersøgelse sammen med svaberprøver fra stierne, fra søernes hud og fra rectum af grisene. Teststammerne blev kun udskilt i fæces fra søerne i relativt lave antal, omkring 103 – 106 c.f.u. pr. g. De var således ikke i stand til at fortrænge den naturlige flora af mælkesyrebakterier i tarmen, ligesom de heller ikke i nævneværdig grad blev overført til grisenes tarmkanal. Efter sidste tildeling af teststammerne forsvandt disse fra såvel fæces som fra huden og miljøet. Der forekom således ingen permanent kolonisering, men der var dog betydelige forskelle i persistens mellem de enkelte testkulturer.
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Pedersen, K., Christensen, G.W., Steffensen, M. et al. Transfer of Lactic Acid Bacterial Strains from the Feed to the Sow, the Environment, and the Piglets. Acta Vet Scand 33, 297–303 (1992). https://doi.org/10.1186/BF03547295
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DOI: https://doi.org/10.1186/BF03547295