EFFECT OF SUPPLEMENTING DAIRY COWS WITH LIVE YEASTS CELLS AND DRIED BREWER’S YEASTS ON MILK CHEMICAL COMPOSITION, SOMATIC CELL COUNT AND BLOOD BIOCHEMICAL INDICES

Electronic journal of Polish agricultural universities

Jerzy Pre¶³  Marian Kuczaj¹  Aleksander Dobicki¹  Jan Twardoñ²  Andrzej Zachwieja¹  Janusz Orda³ 

[1] Institute of Animal Breeding, Faculty of Biology and Animal Science, Wroc³aw University of Environmental and Life Science, Poland;Department of Reproduction and Clinic of Farm Animals, Faculty of Veterinary Medicine, Wroc³aw University of Environmental and Life Science, Poland;Department of Animal Nutrition and Feed Management, Faculty of Biology and Animal Science, Wroc³aw University of Environmental and Life Science, Poland

关键词: lactating cows;    brewer yeast;    milk components;    somatic cells;    serum indices;    haptoglobin;    cows health status;   

DOI  :  

来源: Polish Agricultural Schools of Higher Education

【 摘 要 】

Theaimofthestudywastoverifytheactivityofbrewerrsquo;syeasts(Saccharomycescerevisiae)giventocowsinvariousformsndash;liveS.c.yeastscellsanddriedS.c.yeastsndash;beforecalving(21days)andaftercalving(80days)onthechemicalcompositionofmilk,somaticcellcountinmilk,andonsomephysiological-biochemicalparametersofthecowsrsquo;bloodandtheirhealthstatus.TheexperimentwasconductedinacattlefarmatMalerzowiceMa#322;eon75cowsofPolishHolstein-Friesianbreed(redandwhitevariety)maintainedinthetethersystem;thecowscalvedinsummerseason.Theexperimentincluded2experimentalgroups,andthecontrolone,25cowsineach.AllgroupsofcowswerefedwithfeedingdosebalancedaccordingtoINRAstandards.DryanimalsweregivencompleteTMRdosewithstrawaddition,andmilkingcowsndash;basicdose,partiallymixed(PMR),standardizedontheyieldof16kgmilkperday.Theanimalshadconstantaccesstowaterandsaltlicks.Meanmilkyieldfromthecowonfarmwasca.7000kg.Thecowshedstayedunderconstantveterinarysupervision,itwasfreefrominfectiousdiseasesndash;contagiousandinvasiveones.Thefollowingadditiveswereintroducedtothebasicdoses:brewerrsquo;syeastspreparation(Saccharomycescerevisiae)LeiberBTinamountof200g/head/day(gr.I)andanadditionof1g/head/dayofliveyeasts(gr.II).Fatcontentinmilkincreasedsignificantlyinthegroupofcowsreceivingdriedyeastsaddition,andtheirhealthstatuswasimproved.Alsosomebloodbiochemicalindicesinthesecows(proteinandglobulinslevel)werehigher.Anadditionofdriedyeasts(deadcells)usedprepartumcausedasignificantincreaseinthelevelofGGTP,lacticacid,andasignificantdecreaseinureacontentcomparedtothecontrolgroup.SignificantincreaseinthelevelofAST,proteins,globulinsandglucoseandadecreaseinureacontentwasnotedatthe80thdayoflactationinthegroupreceivingdriedyeastsaddition.SignificantincreaseinGTPandglucoseandsignificantdecreaseinthecontentoflacticacidandcholesterolwerenotedinaperiodof80daysoflactationincowsfromgroupII(liveyeastsaddition).OthervaluesincowsfedwithlivecellsofSaccharomycescerevisiaeyeastswerelikeinthecontrolgroup.Bothbeforeandaftercalving,thelevelofhaptoglobinincowsbloodwassimilar.Nosymptomsofinflammatorystatesrelatedtoyeastsapplicationwerenoted.

【 授权许可】

Unknown