?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Natural+sources+of+antioxidants+%C3%A2%C2%80%C2%93+a+necessity+for+animal+health+and+welfare+and+product+quality+in+organic+livestock+production&rft.subject=Aquaculture&rft.subject=+Dairy+cattle&rft.subject=+Sheep+and+goats&rft.subject=+Health+and+welfare&rft.subject=+Feeding+and+growth&rft.description=Main+objective%3A+Replace+synthetic+antioxidants+(vitamins)+with+natural+sources+in+feed+supplements+%0D%0ASub+goals%3A%0D%0A1.Investigate+Northern+macroalgae+sources%3A+species%2C+alfa-tocopherol+content+and+anti-oxidative+activity+%0D%0A2.Evaluate+the+effects+of+antioxidants+from+natural+vitamin+supplements+on+the+oxidative+stability+of+dairy+cow+milk+and+milk+products+%0D%0A3.Evaluate+the+effects+of+antioxidants+from+natural+vitamin+supplements+on+the+gastrointestinal+microbiota+and+the+immunology+in+ruminants+%0D%0A%0D%0AFat-soluble+vitamins%2C+like+vitamin+E%2C+are+important+for+ruminants+in+respect+to+maintain+an+optimal+immune+function%2C+reproduction+traits+and+a+high+quality+of+milk+and+meat.+In+organic+production+it+is+important+to+find+alternatives+to+synthetic+vitamins%2C+as+vitamin+E+(tocopherol).+Synthetic+vitamin+E+consists+of+87.5+%25+tocopherol+molecules+with+a+non-natural+configuration+and+biological+ineffective.+Thus%2C+the+possibility+for+supplying+with+natural+vitamins+or+antioxidants+easy+to+handle+will+be+of+great+importance+for+organic+farmers.+In+the+present+project+we+will+screen+seaweed+species+for+their+content+of+alfa-tocopherol+and+their+anti-oxidative+activity+in+order+to+find+potential+new+natural+feed+additive+sources.+The+effects+of+seaweed+meal+and+natural+vitamin+E+supplement+on+the+dairy+cow+milk+content+of+alpha-tocopherol%2C+oxidative+stability+of+milk+and+sour%2Fcultured+cream%2C+and+immunology+and+gastrointestinal+micro+biota+in+sheep+and+their+off-springs+will+be+tested+experimentally+in+two+feeding+experiments+with+dairy+cow%0D%0Aand+sheep%2C+respectively.&rft.type=Project+description&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Forgprints.org%2F15353%2F1%2F15353.pdf&rft.identifier=%7BProject%7D+NatVit%3A+Natural+sources+of+antioxidants+%C3%A2%C2%80%C2%93+a+necessity+for+animal+health+and+welfare+and+product+quality+in+organic+livestock+production.+Runs+2009+-+2012.+Project+Leader(s)%3A+Steinshamn%2C+H%C3%83%C2%A5vard%3B+Rebours%2C+Celine%3B+Novoa-Garrido%2C+Margarita%3B+Thuen%2C+Erling%3B+Abrahamsen%2C+Roger+K%3B+Larsen%2C+Hans+J%C3%83%C2%B8rgen+and+Krogh+Jensen%2C+S%C3%83%C2%B8ren%2C+Bioforsk.&rft.relation=http%3A%2F%2Forgprints.org%2F15353%2F