?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Oesophagostomum+dentatum+and+Trichuris+suis+infections+in+pigs+born+and+raised+on+contaminated+paddocks&rft.creator=Mejer%2C+Helena&rft.creator=Roepstorff%2C+Allan&rft.subject=+Health+and+welfare&rft.description=SUMMARY%0D%0ATransmission+of+Oesophagostomum+dentatum+and+Trichuris+suis+was+studied+in+outdoor+reared+pigs.+Six+farrowing+paddocks+were+naturally+contaminated+in+May+to+mid+June+2001+by+experimentally+infected+seeder+pigs.+Early+July%2C+1+sow+farrowed+on+each+paddock+and+starting+week+3+post+partum+(p.p.)+the+offspring+was+slaughtered+serially+every+2+weeks+for+recovery+of+O.+dentatum+and+T.+suis.+Faeces+was+collected+regularly+for+parasite+egg+counts+and+acid-insoluble+ash+(AIA)+content+as+an+indicator+for+geophagy.+Weaning+took+place+week+7+p.p.+by+removing+the+sow.+Paddock+infection+levels+were+estimated+in+mid+June+(O.+dentatum)+and+late+November+(O.+dentatum+and+T.+suis)+using+helminth+na%C3%83%C2%AFve+tracer+pigs.+Soil+and+vegetation+samples+were+collected+regularly.+Despite+a+high+initial+contamination+by+the+seeder+pigs%2C+O.+dentatum+paddock+infectivity+was+negligible+to+low+throughout+the+raising+of+the+experimental+piglets%2C+which+had+a+slow+accumulation+of+nodular+worms+ending+with+a+mean+of+422+worms%2Fpig+week+19+p.p.+As+only+few+eggs+developed+to+infectivity+overall+T.+suis+transmission+was+minimal.+The+first+T.+suis+were+recovered+week+11+p.p.+and+the+highest+mean+burden+of+21+worms%2Fpig+was+recorded+week+19+p.p.+The+experimental+pigs+had+high+faecal+levels+of+AIA+though+it+was+decreased+from+53+%25+in+3+weeks+old+piglets+to+15+%25+in+19+weeks+old+pigs.+The+results+are+discussed+in+relation+to+the+biological+characteristics+of+the+2+parasites+and+their+occurrence+in+organic+pig+production.+&rft.date=2006&rft.type=Journal+paper&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Forgprints.org%2F9366%2F1%2F9366.pdf&rft.identifier=Mejer%2C+Helena+and+Roepstorff%2C+Allan+(2006)+Oesophagostomum+dentatum+and+Trichuris+suis+infections+in+pigs+born+and+raised+on+contaminated+paddocks.+Parasitology%2C+133%2C+pp.+295-304.+*&rft.relation=http%3A%2F%2Forgprints.org%2F9366%2F