课件-后备母猪挑选

Selectionof卡美农业咨 您的国际外1内其他缺Other2内其他缺Other3GOAL→Selectagiltabletostayintheforatleastfive4TakeagoodlookinwholeIdentifyandremoveanygiltsthatareinpoorbodycondition,lame,orsick.5Beforestartingselection,knowhowmanyanimalsyoumayculltoreachthetargetforselectionrate.6选。Giltsgothroughthreeselectionsbeforetheyenteredintotheherdasbreeding第一次筛选-1stselection–Dayof2ndselectionDayofmovingfromnurserytoeitherFinisherunitorGDU3rdselection–165daysofageorear7日1stselection–DayThe2ndselectioncewhenmovedtoeitherfinisherunitor8第三次筛选-165日龄时或打耳标3rdselection–165daysofageorearBeforeagiltistaggeditmust14 Atleast14teats,7oneach Allselectedgiltsthatonlyhave12teatsshouldbe9GoodNodefectssuchUmbilical无Blind yMinimumof14 Threepairsofnipplesfrontofthenavelcord(bellybutton)ifpossible Blindteats– Teatsclosesttothehindlegsofthesowoccasionallyhavethetiprubbedoffwhilenursingduringthefirstfewdaysafterbirth.这 Thesenipplesmaynotbeacceptableandnotbe DonotcountsmallPINnipplesbetweensets. invertednipplesshouldbeevaluated如果突出于凹陷的乳晕，仍然可以算作有效。Ifthenipplecanbeseenprotrudingfromtheinvertedringaroundthenipplethiswouldbeaselectteat. Whenthegiltisgrowingtheteatwilldevelopintoafunctionalteatduringgestation.Tobequalifiedforselectionthegiltsfirstlymusthaveall:Atleast14goodFourgoodNo Averygoodunderlineatleastsevenwell-spacedteatsperside. TeatsizeandtextureareLookatpregnant寸适当。Teatsarewellspacedwithgoodsize.三和第四个间的距离Thisunderlineisalsobutthespacebetweenthethirdand teatsisinadequateforproper ryPoorspacingbetweenthefirstandsecondteats.很差的腹线 ，分布不均Verybaduneventeatsize,unevenspacing,poorpositioningandteat Thisgiltonlyfiveteatsononesideandshouldnotbeselected.上第二个是典良的。Thesecondteatthisgilt’sunderlineisanexampleofanon-functionalandunderdevelopedteat. Thisgilthassix,spacedteats,buttheylookverypoor.Thisgiltshouldbe ThisgilthasonlyteatsoneachThegiltistobe正常 Normal凹陷InvertedTeat瞎Blind Itisveryimportanttohaveasystemtoyouevaluateandtrackthegiltsandtheir在第2、5和8个月记录后备母猪的Cardforrecordingtheteatat2,5and8months后备母猪耳号GiltTeatqualityright右侧尺寸Teatsizeright123456789左侧尺寸Teatsizeleft左侧质量Teatqualityleft尺寸:TeatBiggerthanSmallandoldSmallerthanBigold小SmallbutnewWorndownandlooklikearoundBigandnewwoundwherehalfteatisTeatis内其他缺Other挑选后备母猪时 Legsareoftenoverlookedwhenselecting 是否有问题是挑选后备母 Checkinglegsisoneofthemostimportantingiltselectionsincethegiltswithlegdefaultsmightnotbelong-lastingsows.Alwaysallowroomfortheanimalsto Donoteverattempttoassesslegsonananimaluntilyouseeitwalk.Thegiltmusthavegoodsound不能通过筛选的典 问题有TypicalproblemstobeselectedagainstBentFrontLegs:Theanimalappearsto“goingover”onitsfrontlegsorhaveflat后腿弱：有些猪走路后腿摇晃，这些猪通常后臀部WeakBackLegs:Someanimals“wobble”ontheirlegs,usuallyanimalswithlarge Legscanalso“gounder”(sickle-hocked)theanimalgivetheappearanceofs ylegs.Thiscancausetheanimaltoslipandfallonitsrear-end.走路姿态僵硬：通常是前腿的StiffWalking:UsuallyafrontlegBuck-kneecannotusedonthe膝关节突BUCK-膝关节突BUCK-过直的Poststraight过直的Poststraight损 害的后备母损应被淘汰，否则以后引起问Leginjurycullingasitcancauseproblemslaterinthegiltslife.，应进行评估来决是淘汰还是保injury,assesstheproblemanddecidetocullor这 受伤情况应该淘汰Leginjury,shouldSicklehocked,cancreateproblemsforthegiltlaterinlifeifkept.正常的后NormalhindSicklehocked,considerculling.Evenreartoeswithslightspread,goodshapeandcushion.健康GoodSmallreartoescloseCancauseproblemsasthegiltgrowsheavier.SmallinsidetoesarecommonTheinjuryshowncanunevenwear,footinjuryandstresstothejoints.Therearoutsidetoe,morethan1.5cmlongerthantheinsidetoe.Thishasalreadycaused SmalloutsidetoescancauselegstobedamagedunderheavierSmall,shortreartoesprovidelessareatodistributeweightandmayhavecontributedtotheinjuryandswellingofthisfoot.CloseinspectionisrequiredtoidentifythecrackedreartoeofthisThecrackedinsidetoeisnotarecentThisgiltwillnotlastintheCallusedrearlegsindicatestructural。Callusesonthealsocalledhocks”areacluethatthegiltishavingdifficultygettingupandlying SwollenorpuffyhocksmayindicatetraumaorinjurycausedbygettingupandlyingFootpadtornandseparatedonthesurfaceofthefoot.HoofIfdamagedorirritated,thefoot infectedand/or正(角度大小 (角度太大，髋关节太直后腿侧视 正(角度大小 (角度太大，髋关节太直不能选留，为什么Donotselect,不能选留，为什么Donotselect,SmallInsideToe:Thiscanbeaparticularlyontheback Animalswhich“wobble”orarehavingawalkingbecauseofuneventoesshouldbeFlexinFrontToe:Someflexorgiveinfrontlegandfootishighlydesirable,butwherethefootlooksdouble-jointedorwherethedewclawsaretouchingornearlytouchingthefloor“coon-footed”,theanimalsshouldbe内其他缺Other也是挑选后备母Oneofthethingsyouselectgiltfromis.Howdoesitlook?Doesitindicatethereproductivetractis这个小而带尖Thissmall,slightly createproblemswithnaturalmatingand这个小而带尖Thissmall,maymakenaturalmatingmoredifficult.Thisverysmall,infantileindicatesanThisgiltshouldbe No AlwaysCull!总是淘汰→坏死Necrotic/不成熟Cullifitmayinterfereinaproper内其他缺Other其他缺OtherGiltscanhaveotherdefects,anditistobeawareoftheseas Someofthemyouknowrightawaythegiltswill e其他缺OtherHumpback其他缺OtherAffectsfrontandrearlegsyieldingstraightlegsonTheseanimalsshouldbe其他缺Other其他缺OtherDipOppositeofhumpback,usuallyadipbehindtheshouldersis其他缺Other其他缺OtherAnysizeofruptureclassifiesagiltasaCULL.其他缺OtherNavelcordsvisuallyDonotuseanywithnavelcord标记并治Markand其他缺Other八字