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ThisexperimentmainlyaimedatthedifferentbirthrankChinaHollandStancowdategrainincreaseextraneoussourcefattocauserawmaterialyoungfattyacidcomposition,theCLAcontentchangesituationtocarryonthediscussion,usedthegasphasechromatographytotestincowfreshmilkthefattyacidcompositionandtheCLAcontenthascarriedonthefoundationcontrastiveanalysis,finallyindicated:Increasesrichlysolidcanchangethemilkcow'smilkfattyacidincludingthelinoleicacidandthelinolenicacidoilsunflowerseedsandthelinseedtheconstitution,canobviouslyenhanceCLA,EPA,DHAandthePUFAcontent(P<0.05),reducesinthebutterfatSFAandsoonC12:0,C16:0,C18:0content,themulti-unsaturatedfattyacidandthesaturatedfattyacid(PUFA/SFA)theratio2treatmentgroupsobviouslyarehigherthanthecontrolgroup(P<0.05),enhances92.32%separatelyand36.37%;InthebutterfattheconjugatelinoleicacidCLA(c9t11t,10t12c)proportionenhanced161.01%inturnintheoilsunflowerseedsandthelinseedtwotreatmentgroupscomparedtothecontrolgroup(P<0.05)and53.18%(P<0.05);EPA,theDHAcontentsunflowerseedgroupcomparesthecontrolgrouptoenhance80.91%separatelyand196.20%,thelinseedgroupcomparesthecontrolgrouptoenhance143.32%separatelyand255.84%.