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ID:33958212
大小:4.03 MB
页数:49页
时间:2019-03-02
《去势对淮南麻黄公鸡肉用性状及肉质相关基因表达的影响》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、安徽农业大学硕士学位论文去势对淮南麻黄公鸡肉用性状及肉质相关基因表达的影响姓名:王钱保申请学位级别:硕士专业:动物遗传育种与繁殖指导教师:姜润深201206摘要通过外科手术摘除公鸡睾丸,失去性能力的公鸡称为去势公鸡。去势公鸡消除了性欲和繁殖能力,在毛色、鸡冠大小、饲料转化率、生产性能、屠宰性能、肉质等方面发生一系列特征变化。本研究以安徽知名品种淮南麻黄鸡为研究对象,旨在系统评价去势对淮南麻黄鸡屠宰性能和肉质的影响。相同环境饲养的全同胞淮南麻黄公鸡,第46日龄时分成两组,其中一组进行去势处理,另一组只手术不去势作为对照组。12、16、20周龄时分批屠宰,对试验组和对照组的胴体性状及肉品质进行了测
2、定与分析,并对PPAR.0【、MSTN、MyoG三个肉质相关基因mI矾A表达量的变化进行了研究。结果表明:1.生长与屠宰性能方面:去势对公鸡的生长速度、屠宰率等无显著影响(P>O.05);第16周龄时,试验组净膛率显著高于对照组(P<0.05);第20周龄时,试验组腿肌率显著高于对照组(P<0.05);第l6、20周龄时,试验组腹脂率显著高于对照组(P3、:16周龄时试验组胸肌和腿肌剪切力分别低于对照组58%和55%(P4、)。综上所述,淮南麻黄鸡公鸡去势对生长速度影响不显著,但是大大提高了嫩度和肌内脂肪含量,这与肉质相关基因PPAR.a、MSTN、MyoG等的表达量变化有关。关键词:淮南麻黄鸡;去势;屠宰性能;肉质;PPAR.0【;MSTN;MyoGAbstractThecas仃atedrooster'whosetestiswaseXti印atedandlosessexualmnction,hasaseriesofdifrerent仃aitsin佗a_tllercolor,combsize,feedconVersionrate,productiVitype墒nllallce,slau咖erpe而m锄ce锄dme5、atqual咄InthisStudy,HuainaIlChicken,af.锄ouschickenbreedinAnhuiProvince,wasselectedtoestimatethee疵ctsofcastrationonproductionperfonllances锄dmeatqual时.TheHuainanChickensselectediIltheresearcharemixedsibs.Atday46,theyweredividedintotwo莎oupscontainthecas仃atedgr01Jp,whosemembersWercc舭dandcontrolgroup,whic6、hoperatI甜onbutuncaS心a_ted.Thechickeninthe觚ogroupswereslaughteredatl2,l6,andweeksofage,respectiVely'andthecarcass臼alts,meatquality,aIldPPAR.0L,MSTN锄dMyoGgenemRNAexpressionpfofilewereanalyzed.Theresultsshowed:1.gro叭h柚dslau曲terpe墒mance:therewaSnodi仟erence(P>O.05)inbodyweightandslaughterratebetweentwogr7、oupsduringthewholestudyperiod;Atl6wksofage,percentofeVisceIjatedbodywashigher(P<0.05)thancontrolgroup.At20wksofage,legmusclerateofcatratatedwerehigher(P
3、:16周龄时试验组胸肌和腿肌剪切力分别低于对照组58%和55%(P4、)。综上所述,淮南麻黄鸡公鸡去势对生长速度影响不显著,但是大大提高了嫩度和肌内脂肪含量,这与肉质相关基因PPAR.a、MSTN、MyoG等的表达量变化有关。关键词:淮南麻黄鸡;去势;屠宰性能;肉质;PPAR.0【;MSTN;MyoGAbstractThecas仃atedrooster'whosetestiswaseXti印atedandlosessexualmnction,hasaseriesofdifrerent仃aitsin佗a_tllercolor,combsize,feedconVersionrate,productiVitype墒nllallce,slau咖erpe而m锄ce锄dme5、atqual咄InthisStudy,HuainaIlChicken,af.锄ouschickenbreedinAnhuiProvince,wasselectedtoestimatethee疵ctsofcastrationonproductionperfonllances锄dmeatqual时.TheHuainanChickensselectediIltheresearcharemixedsibs.Atday46,theyweredividedintotwo莎oupscontainthecas仃atedgr01Jp,whosemembersWercc舭dandcontrolgroup,whic6、hoperatI甜onbutuncaS心a_ted.Thechickeninthe觚ogroupswereslaughteredatl2,l6,andweeksofage,respectiVely'andthecarcass臼alts,meatquality,aIldPPAR.0L,MSTN锄dMyoGgenemRNAexpressionpfofilewereanalyzed.Theresultsshowed:1.gro叭h柚dslau曲terpe墒mance:therewaSnodi仟erence(P>O.05)inbodyweightandslaughterratebetweentwogr7、oupsduringthewholestudyperiod;Atl6wksofage,percentofeVisceIjatedbodywashigher(P<0.05)thancontrolgroup.At20wksofage,legmusclerateofcatratatedwerehigher(P
4、)。综上所述,淮南麻黄鸡公鸡去势对生长速度影响不显著,但是大大提高了嫩度和肌内脂肪含量,这与肉质相关基因PPAR.a、MSTN、MyoG等的表达量变化有关。关键词:淮南麻黄鸡;去势;屠宰性能;肉质;PPAR.0【;MSTN;MyoGAbstractThecas仃atedrooster'whosetestiswaseXti印atedandlosessexualmnction,hasaseriesofdifrerent仃aitsin佗a_tllercolor,combsize,feedconVersionrate,productiVitype墒nllallce,slau咖erpe而m锄ce锄dme
5、atqual咄InthisStudy,HuainaIlChicken,af.锄ouschickenbreedinAnhuiProvince,wasselectedtoestimatethee疵ctsofcastrationonproductionperfonllances锄dmeatqual时.TheHuainanChickensselectediIltheresearcharemixedsibs.Atday46,theyweredividedintotwo莎oupscontainthecas仃atedgr01Jp,whosemembersWercc舭dandcontrolgroup,whic
6、hoperatI甜onbutuncaS心a_ted.Thechickeninthe觚ogroupswereslaughteredatl2,l6,andweeksofage,respectiVely'andthecarcass臼alts,meatquality,aIldPPAR.0L,MSTN锄dMyoGgenemRNAexpressionpfofilewereanalyzed.Theresultsshowed:1.gro叭h柚dslau曲terpe墒mance:therewaSnodi仟erence(P>O.05)inbodyweightandslaughterratebetweentwogr
7、oupsduringthewholestudyperiod;Atl6wksofage,percentofeVisceIjatedbodywashigher(P<0.05)thancontrolgroup.At20wksofage,legmusclerateofcatratatedwerehigher(P
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