?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Effect+of+winter+feeding+level+and+season+on+herbage+intake+in+dairy+breed+steers+on+perennial+ryegrass%2Fwhite+clover+pasture&rft.creator=Nielsen%2C+Dr.+B.&rft.creator=Thamsborg%2C+Dr.+S.M.&rft.creator=Andersen%2C+Dr.+H.R.&rft.creator=Kristensen%2C+Dr.+T.&rft.subject=+Feeding+and+growth&rft.description=The+objectives+of+this+study+were+(1)+to+estimate+herbage+intake+in+spring+and+late+summer+in+Danish+Friesian+steers+during+their+first+grazing+season+on+ryegrass+%2F+white+clover+pasture+and+(2)+to+investigate+the+effect+of+different+winter+feeding+levels+on+subsequent+herbage+intake+in+Danish+Friesian+steers+weighing+more+than+450+kg.+In+experiment+1+(exp.1)%2C+herbage+intake+was+estimated+in+18-20+steers+of+a+mean+live+weight+of+210+kg+(s.e.+8.0+kg)+and+312+kg+(s.e.+8.9+kg)+in+May%2FJune+and+August+respectively.+In+experiment+2+(exp.2)%2C+twenty-two+steers+were+allocated+to+2+feeding+treatments+in+their+second+winter+with+expected+daily+liveweight+gain+of+500+g+(LOW)+and+800+g+(HIGH).+The+steers+weighed+483+kg+(s.e.+13.1+kg)+(LOW)+and+542+kg+(s.e.+8.2+kg)+(HIGH)+at+the+time+of+turn-out+on+a+ryegrass+%2F+white+clover+pasture.+Herbage+intakes+were+estimated+in+June+using+the+alkane+bolus+technique.+Faeces+and+herbage+samples+were+analysed+for+alkanes+to+estimate+herbage+intake%2C+digestibility+and+botanical+composition+of+intake.+The+weight+gains+(kg%2Fday)+were+1.156+(s.e.+0.69)+and+1.054+(s.e.+0.80)+in+May%2FJune+and+August+respectively+(exp.+1)+and+1.592+(s.e.+0.137)+and+1.273+(s.e.+0.116)+in+June+in+LOW+and+HIGH+respectively+(exp.+2).+Daily+herbage+intake+(kg+dry+matter+(DM)%2Fsteer)+estimated+by+alkanes+C32+%2FC33+were+5.2+(s.e.+0.26)%2C+9.4+(s.e.+0.28)+in+May%2FJune+and+August+(exp.1)+(P%3C0.001)+and+12.0+(s.e.+0.50)+and+10.4+(s.e.+0.41)+in+LOW+and+HIGH+(exp.2)+(P%3C0.05)+respectively.+The+diet+of+steers+contained+primarily+ryegrass+leaves+(0.70-0.90)+and+ryegrass+stems+(0.10-0.30)+and+clover+(0-0.02+and+0.18+in+exp.1+and+exp.2+respectively).+It+was+concluded+that+(1)+steers+during+their+first+grazing+season+can+maintain+herbage+intake+per+kg+liveweight+during+the+grazing+season+from+May+to+August%2C+and+(2)+steers+weighing+more+than+450+kg+are+able+to+increase+herbage+intake+along+with+compensatory+growth.++&rft.date=2003&rft.type=Journal+paper&rft.type=NonPeerReviewed&rft.format=source&rft.identifier=http%3A%2F%2Forgprints.org%2F1952%2F1%2FDokument.doc&rft.identifier=Nielsen%2C+Dr.+B.%3B+Thamsborg%2C+Dr.+S.M.%3B+Andersen%2C+Dr.+H.R.+and+Kristensen%2C+Dr.+T.+(2003)+Effect+of+winter+feeding+level+and+season+on+herbage+intake+in+dairy+breed+steers+on+perennial+ryegrass%2Fwhite+clover+pasture.+Animal+Science%2C+76.&rft.relation=http%3A%2F%2Forgprints.org%2F1952%2F