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ID:33078320
大小:1.95 MB
页数:51页
时间:2019-02-19
《维生素e对夏季泌乳水牛抗氧化性能、生产性能的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、广西大学硕士学位论文维生素E对夏季泌乳水牛抗氧化性能、生产性能的影响姓名:陈雯雯申请学位级别:硕士专业:临床兽医学指导教师:何宝祥201206维生素E对夏季泌乳水牛抗氧化性能、生产性能的影响摘要研究夏季高温生产条件对泌乳水牛生理和抗氧化性能的影响,探索泌乳水牛热应激的产生条件;并研究不同维生素E添加水平对夏季泌乳水牛抗氧化性能、泌乳性能、乳成分以及电解质的影响。实验一:选择广西南宁某规模化奶水牛场健康无病的泌乳水牛24头,2~5胎次,日泌乳量约5--一10kg。分别于夏、秋两个季节监测牛舍的温度、湿度、THI、试验牛的呼吸频率、直肠温
2、度以及血浆TAC、GPX、MDA。结果显示,试验期夏季THI平均85,秋季THI平均61。泌乳水牛夏季直肠温度、呼吸频率均高于秋季,差异不显著(P>O.05)。夏季泌乳水牛血浆中GPX、TAC均极显著低于秋季(P3、期间监测温度、湿度、THI、产奶量;同时隔周测定其血浆Ⅶ、TAC、GPX、MDA、乳糖、乳脂、乳蛋白、乳总固形物、乳非固形物、K+、Na+、Cl’、Ca2+。结果显示,夏季高温生产条件下泌乳水牛添加维生素E可提高血浆VE、TAC、GPX,降低MDA,缓解泌乳曲线下降,2000IU/头·d效果较好。1000IU/头·d能显著提高乳糖含量(PO.05)。缓解血浆K+、Na+的下降,对Cl‘、Ca2+4、无明显影响。关键词:高温泌乳水牛维生素E生理抗氧化产奶量乳成分电解质EFFEATOFDIFFERENTVITAMINELEVELSONANTIOXIDANTPROPERTIES,PRODUCTIONPERFORMANCEOFDAIRYBUFFALOINSUMMERABSTRACTTostudytheeffectonphysiologicalandoxidationresistanceofdairybuffaloinsummer,toexplorethegenerativeconditionofheatstressindairybuff5、alo,andtostudytheeffectsofthedietwithdifferentlevelsofvitaminEonoXidationresistance,lactationperformance,milkingredientsandelectrolyteindairybuffaloinsummer,followingtestswereconducted·PartI:TwentyfourhealthydairybuffalowereselectedinabuffaiofarmofGuangxi,accordingtothe6、principleof2—5parities,dailymilkyieldisabout5-10kg.Insummerandautumn,thetemperature,humidityandTemperatureHumidityIndex0Ⅱ4I),breathingfrequency,rectaltemperatureandplasmaTAC,GPX,MDAweredetermined.Results:TheTHImeanwas85insummer,thatwas61inautumn.Thebuffalo’rectaltempera7、tureandbreathingfrequencyinsummerarebothhigherthaninautumn,butthedifferencewasnotsignificant(P>0.05).PlasmaGPX,TACconcentrationswereverysignificantlower(P<0.01),andMDAlevelWassignificanthigher(P<0.05)insummerthaninautumn.PartII:Fifteendairybuffalowereselectedtotakeafeed8、ingtestaboutIIIonemonthins咖er.Thetestedbuffaloweredividedintothreegroups·Igroup:0IU(basicdiet,N=5);IIgroup:100
3、期间监测温度、湿度、THI、产奶量;同时隔周测定其血浆Ⅶ、TAC、GPX、MDA、乳糖、乳脂、乳蛋白、乳总固形物、乳非固形物、K+、Na+、Cl’、Ca2+。结果显示,夏季高温生产条件下泌乳水牛添加维生素E可提高血浆VE、TAC、GPX,降低MDA,缓解泌乳曲线下降,2000IU/头·d效果较好。1000IU/头·d能显著提高乳糖含量(PO.05)。缓解血浆K+、Na+的下降,对Cl‘、Ca2+
4、无明显影响。关键词:高温泌乳水牛维生素E生理抗氧化产奶量乳成分电解质EFFEATOFDIFFERENTVITAMINELEVELSONANTIOXIDANTPROPERTIES,PRODUCTIONPERFORMANCEOFDAIRYBUFFALOINSUMMERABSTRACTTostudytheeffectonphysiologicalandoxidationresistanceofdairybuffaloinsummer,toexplorethegenerativeconditionofheatstressindairybuff
5、alo,andtostudytheeffectsofthedietwithdifferentlevelsofvitaminEonoXidationresistance,lactationperformance,milkingredientsandelectrolyteindairybuffaloinsummer,followingtestswereconducted·PartI:TwentyfourhealthydairybuffalowereselectedinabuffaiofarmofGuangxi,accordingtothe
6、principleof2—5parities,dailymilkyieldisabout5-10kg.Insummerandautumn,thetemperature,humidityandTemperatureHumidityIndex0Ⅱ4I),breathingfrequency,rectaltemperatureandplasmaTAC,GPX,MDAweredetermined.Results:TheTHImeanwas85insummer,thatwas61inautumn.Thebuffalo’rectaltempera
7、tureandbreathingfrequencyinsummerarebothhigherthaninautumn,butthedifferencewasnotsignificant(P>0.05).PlasmaGPX,TACconcentrationswereverysignificantlower(P<0.01),andMDAlevelWassignificanthigher(P<0.05)insummerthaninautumn.PartII:Fifteendairybuffalowereselectedtotakeafeed
8、ingtestaboutIIIonemonthins咖er.Thetestedbuffaloweredividedintothreegroups·Igroup:0IU(basicdiet,N=5);IIgroup:100
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