The QCD analysis of the $xF_3$ structure function measured in deep-inelastic scattering of neutrinos and antineutrinos on an iron target at the Fermilab Tevatron is done in 1--, 2-- and 3--loop order of QCD. The x dependence of the higher--twist contributi
TableI.Resultsof1-,2-and3-orderQCD t(withTMC)oftheCCFRxF3SFdataforf=4,Q2>1.3GeV2withthecorrespondingstatisticalerrorsandvaluesofh(x)atdi erentvaluesofx.NMAX=10for1-and2-oderandNMAX=7for3-order t.