?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Status+of+selenium+and+vitamin+E+on+Norwegian+organic+sheep+and+dairy+cattle+farms&rft.creator=Govasmark%2C+Espen&rft.creator=Steen%2C+Arvid&rft.creator=Str%C3%83%C2%B8m%2C+Turid&rft.creator=Hansen%2C+Sissel&rft.creator=Singh%2C+Bal+Ram&rft.creator=Bernhoft%2C+Aksel&rft.subject=+Dairy+cattle&rft.subject=+Sheep+and+goats&rft.subject=+Feeding+and+growth&rft.description=Herbage+selenium+(Se)+concentration+is+generally+low+in+Norway.+It+is+unknown%2C+if+feeding+practises+on+Norwegian+organic+farms+fulfil+the+dietary+need+of+Se+and+vitamin+E+to+sheep+and+dairy+cattle.+Therefore%2C+we+analysed+Se+in+soil+and+herbage%2C+and+Se+and+vitamin+E+in+animal+blood+in+the+indoor+feeding+season+at+14+organic+dairy+and+14+organic+sheep+farms.+The+herbage+Se+concentration+was+low.+Approximately+50+and+35+%25+of+all+samples+in+the+first+and+second+cut%2C+respectively%2C+had+Se+concentrations+below+the+detection+limit+of+0.01+mg%2Fkg+dry+matter+(DM).+The+median+(10th%2C+90th+percentile)+Se+concentrations+were+%3C0.01+(%3C0.01%2C+0.03)+and+0.02+(%3C0.01%2C+0.06)+mg%2Fkg+DM+in+the+first+and+second+cuts%2C+respectively.+Whole+blood+Se+concentrations+were+0.10+(0.04%2C+0.15)+%C3%82%C2%B5g%2Fg+in+dairy+cattle+and+0.14+(0.03%2C+0.26)+%C3%82%C2%B5g%2Fg+in+sheep.+Vitamin+E+concentrations+were+4.2+(2.7%2C+8.4)+mg%2FL+in+dairy+cattle+and+1.3+(0.9%2C+2.4)+mg%2FL+in+sheep.+None+of+the+soil+or+plant+variables+explained+the+variation+in+herbage+Se+concentration%2C+although+Se+in+soil+and+plant+tended+to+be+correlated.+Herbage+Se+concentration+was+inadequate+to+meet+the+dietary+Se+requirements.+Vitamin+E+requirement+was+only+met+in+dairy+herds.+We+recommend+Se+and+vitamin+E+supplementation+to+ruminants+on+organic+farms.&rft.publisher=Taylor+%26+Francis&rft.date=2005&rft.type=Journal+paper&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Forgprints.org%2F6922%2F1%2FSe_og_vit_e_artikkel.pdf&rft.identifier=Govasmark%2C+Espen%3B+Steen%2C+Arvid%3B+Str%C3%83%C2%B8m%2C+Turid%3B+Hansen%2C+Sissel%3B+Singh%2C+Bal+Ram+and+Bernhoft%2C+Aksel+(2005)+Status+of+selenium+and+vitamin+E+on+Norwegian+organic+sheep+and+dairy+cattle+farms.+Acta+Agriculturae+Scandinavica%2C+Section+A+Animal+Science%2C+55%2C+pp.+40-46.&rft.relation=http%3A%2F%2Forgprints.org%2F6922%2F