两种脂肪对瘤胃发酵和奶牛生产性能的影响的开题报告摘要：瘤胃内微生物的发酵是奶牛能够消化纤维素和产生营养的关键。而脂肪是奶牛常见的饲料添加物，对奶牛产奶性能有很大的影响。本研究旨在探究两种不同来源的脂肪（椰子油和糖蜜油）对奶牛瘤胃内微生物发酵和生产性能的影响。参考文献：1.AngladeJ,delaTorreA,LeyvaCM,etal.Effectsofsupplementingabasaldietwithcrudeglycerolonperformance,nutrientdigestibility,metabolicresponses,andfeedingbehaviorofmid-lactationdairycows[J].JournalofDairyScience,2015,98(1):315-323.2.ChenF,LiY,WangA,etal.Effectofdietarycoconutoilasamedium-chainfattyacidsourceonperformance,carcasscompositionandserumlipidsinmalebroilers[J].AnimalScienceJournal,2014,85(3):279-285.3.YadavRK,SankhyanSK,RampalS.Effectofdietaryfatlevelsonmilkproductionandcomposition,bloodmetabolitesandhormonalprofileinMurrahbuffaloes[J].TropicalAnimalHealthandProduction,2014,46(1):157-165.4.ZebeliQ,MansmannD,SteingassH,etal.Effectsoffeedingincreasingproportionsofspentgrainsonfeedintake,chewingactivity,nutrientdigestibility,andmilkproductionofdairycows[J].JournalofDairyScience,2011,94(5):2623-2636.关键词：奶牛，瘤胃微生物，发酵，脂肪，椰子油，糖蜜油，生产性能