?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Forgprints.org%2Fid%2Feprint%2F32831%2F&rft.title=Do+different+cow+types+respond+differently+to+a+reduction+of+concentrate+supplementation+in+an+Alpine+low-input%0D%0Adairy+system%3F&rft.creator=Horn%2C+Marco&rft.creator=Steinwidder%2C+Andreas&rft.creator=Pfister%2C+Rupert&rft.creator=Gasteiner%2C+Johann&rft.creator=Vestergaard%2C+M.&rft.creator=Larsen%2C+Torben&rft.creator=Zollitsch%2C+Werner&rft.subject=+Production+systems&rft.description=Forage+based+low-input+dairy+systems+include+a+certain+risk+of+a+temporary+undersupply+with+nutrients+and+energy.+Therefore+the+aim+of+the+present+study+was+to+investigate+the+productive%2C+reproductive+and+metabolic+response+of+two+different+dairy+cow+types+to+a+reduction+of+concentrate+supplementation+in+an+Alpine+low-input+milk+production+system.+The+cow+types+compared+were+conventional+Austrian+Brown+Swiss+(BS)+and+a+specific+strain+of+Holstein+Friesian+(HFL).+The+latter+was+primarily+selected+for+lifetime+performance+and+Fitness+under+low-input+conditions+and+is+therefore+considered+by+Farmers+as+being+better+suited+for+low-input+production+systems.+Both+genotypes+were+assigned+to+one+of+two+concentrate+supplementation+levels%2C+receiving+618+kg+(Con)+or+279+kg+(Low)+of+concentrates+per+lactation.+During+two+years+data+were+collected+for+21+lactations+from+13+BS+cows+and+29+lactations+from+20+HFL+cows.+No+significant+interactions+between+cow+type+and+dietary+treatment+were+found+for+most+traits+investigated.+However%2C+there+was+a+tendency+(Pcow+type+x+dier%3D0.096)+for+energy-corrected-milk+(ECM)+yield+to+be+reduced+at+the+Low+compared+with+the+Con+concentrate+level+in+BS+but+not+in+HFL+during+the+First+7+weeks+of+lactation.+Over+the+entire+lactation%2C+BS+was+significantly+heavier+than+HFL+(590+vs.+535+kg)%2C+but+no+significant+differences+between+cow+types+were+observed+for+ECM+yield%2C+the+development+of+body+condition+score+and+back+fat+thickness+or+reproductive+performance.+The+reduction+of+concentrate+supplementation+decreased+energy+balance+(+-10%25%3B+Pdier%3D0.002)+in+both+cow+types%2C+but+HFL+seemed+to+be+able+to+support+milk+production+primarily+by+increasing+mobilisation+of+body+fat+reserves+in+early+lactation.+In+contrast+BS+tended+to+reduce+ECM+yield%2C+sustain+blood+glucose%2C+and+increase+plasma+urea+and+non-esteryfied+fatty+acids+levels.+However%2C+measured+over+the+entire+lactation+loss+of+body+tissue+and+reproductive+performance+were+relatively+insensitive+to+dietary+treat%C2%ADment.+The+results+indicate+that+BS+was+probably+not+able+to+express+its+full+genetic+potential+for+milk+production+in+any+of+the+dietary+treatments+and+that+for+both+genotypes&rft.date=2014&rft.type=Journal+paper&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=%2Fid%2Feprint%2F32831%2F6%2FDo%2520different%2520cow%2520types%2520respond%2520differently%2520to%2520a%2520reduction%2520of%2520concentrate.pdf&rft.identifier=+++Horn%2C+Marco%3B+Steinwidder%2C+Andreas%3B+Pfister%2C+Rupert%3B+Gasteiner%2C+Johann%3B+Vestergaard%2C+M.%3B+Larsen%2C+Torben+and+Zollitsch%2C+Werner+++(2014)+Do+different+cow+types+respond+differently+to+a+reduction+of+concentrate+supplementation+in+an+Alpine+low-input+dairy+system%3F+++Livestock+Science%2C+170+(2014)%2C+pp.+72-83.++++++++