課件-后備母豬挑選

Selectionof卡美農(nóng)業(yè)咨 您的國際外1內(nèi)其他缺O(jiān)ther2內(nèi)其他缺O(jiān)ther3GOAL→Selectagiltabletostayintheforatleastfive4TakeagoodlookinwholeIdentifyandremoveanygiltsthatareinpoorbodycondition,lame,orsick.5Beforestartingselection,knowhowmanyanimalsyoumayculltoreachthetargetforselectionrate.6選。Giltsgothroughthreeselectionsbeforetheyenteredintotheherdasbreeding第一次篩選-1stselection–Dayof2ndselectionDayofmovingfromnurserytoeitherFinisherunitorGDU3rdselection–165daysofageorear7日1stselection–DayThe2ndselectioncewhenmovedtoeitherfinisherunitor8第三次篩選-165日齡時或打耳標3rdselection–165daysofageorearBeforeagiltistaggeditmust14 Atleast14teats,7oneach Allselectedgiltsthatonlyhave12teatsshouldbe9GoodNodefectssuchUmbilical無Blind yMinimumof14 Threepairsofnipplesfrontofthenavelcord(bellybutton)ifpossible Blindteats– Teatsclosesttothehindlegsofthesowoccasionallyhavethetiprubbedoffwhilenursingduringthefirstfewdaysafterbirth.這 Thesenipplesmaynotbeacceptableandnotbe DonotcountsmallPINnipplesbetweensets. invertednipplesshouldbeevaluated如果突出于凹陷的乳暈，仍然可以算作有效。Ifthenipplecanbeseenprotrudingfromtheinvertedringaroundthenipplethiswouldbeaselectteat. Whenthegiltisgrowingtheteatwilldevelopintoafunctionalteatduringgestation.Tobequalifiedforselectionthegiltsfirstlymusthaveall:Atleast14goodFourgoodNo Averygoodunderlineatleastsevenwell-spacedteatsperside. TeatsizeandtextureareLookatpregnant寸適當。Teatsarewellspacedwithgoodsize.三和第四個間的距離Thisunderlineisalsobutthespacebetweenthethirdand teatsisinadequateforproper ryPoorspacingbetweenthefirstandsecondteats.很差的腹線 ，分布不均Verybaduneventeatsize,unevenspacing,poorpositioningandteat Thisgiltonlyfiveteatsononesideandshouldnotbeselected.上第二個是典良的。Thesecondteatthisgilt’sunderlineisanexampleofanon-functionalandunderdevelopedteat. Thisgilthassix,spacedteats,buttheylookverypoor.Thisgiltshouldbe ThisgilthasonlyteatsoneachThegiltistobe正常 Normal凹陷InvertedTeat瞎Blind Itisveryimportanttohaveasystemtoyouevaluateandtrackthegiltsandtheir在第2、5和8個月記錄后備母豬的Cardforrecordingtheteatat2,5and8months后備母豬耳號GiltTeatqualityright右側(cè)尺寸Teatsizeright123456789左側(cè)尺寸Teatsizeleft左側(cè)質(zhì)量Teatqualityleft尺寸:TeatBiggerthanSmallandoldSmallerthanBigold小SmallbutnewWorndownandlooklikearoundBigandnewwoundwherehalfteatisTeatis內(nèi)其他缺O(jiān)ther挑選后備母豬時 Legsareoftenoverlookedwhenselecting 是否有問題是挑選后備母 Checkinglegsisoneofthemostimportantingiltselectionsincethegiltswithlegdefaultsmightnotbelong-lastingsows.Alwaysallowroomfortheanimalsto Donoteverattempttoassesslegsonananimaluntilyouseeitwalk.Thegiltmusthavegoodsound不能通過篩選的典 問題有TypicalproblemstobeselectedagainstBentFrontLegs:Theanimalappearsto“goingover”onitsfrontlegsorhaveflat后腿弱：有些豬走路后腿搖晃，這些豬通常后臀部WeakBackLegs:Someanimals“wobble”ontheirlegs,usuallyanimalswithlarge Legscanalso“gounder”(sickle-hocked)theanimalgivetheappearanceofs ylegs.Thiscancausetheanimaltoslipandfallonitsrear-end.走路姿態(tài)僵硬：通常是前腿的StiffWalking:UsuallyafrontlegBuck-kneecannotusedonthe膝關(guān)節(jié)突BUCK-膝關(guān)節(jié)突BUCK-過直的Poststraight過直的Poststraight損 害的后備母損應被淘汰，否則以后引起問Leginjurycullingasitcancauseproblemslaterinthegiltslife.，應進行評估來決是淘汰還是保injury,assesstheproblemanddecidetocullor這 受傷情況應該淘汰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，髖關(guān)節(jié)太直后腿側(cè)視 正(角度大小 (角度太大，髖關(guān)節(jié)太直不能選留，為什么Donotselect,不能選留，為什么Donotselect,SmallInsideToe:Thiscanbeaparticularlyontheback Animalswhich“wobble”orarehavingawalkingbecauseofuneventoesshouldbeFlexinFrontToe:Someflexorgiveinfrontlegandfootishighlydesirable,butwherethefootlooksdouble-jointedorwherethedewclawsaretouchingornearlytouchingthefloor“coon-footed”,theanimalsshouldbe內(nèi)其他缺O(jiān)ther也是挑選后備母Oneofthethingsyouselectgiltfromis.Howdoesitlook?Doesitindicatethereproductivetractis這個小而帶尖Thissmall,slightly createproblemswithnaturalmatingand這個小而帶尖Thissmall,maymakenaturalmatingmoredifficult.Thisverysmall,infantileindicatesanThisgiltshouldbe No AlwaysCull!總是淘汰→壞死Necrotic/不成熟Cullifitmayinterfereinaproper內(nèi)其他缺O(jiān)ther其他缺O(jiān)therGiltscanhaveotherdefects,anditistobeawareoftheseas Someofthemyouknowrightawaythegiltswill e其他缺O(jiān)therHumpback其他缺O(jiān)therAffectsfrontandrearlegsyieldingstraightlegsonTheseanimalsshouldbe其他缺O(jiān)ther其他缺O(jiān)therDipOppositeofhumpback,usuallyadipbehindtheshouldersis其他缺O(jiān)ther其他缺O(jiān)therAnysizeofruptureclassifiesagiltasaCULL.其他缺O(jiān)therNavelcordsvisuallyDonotuseanywithnavelcord標記并治Markand其他缺O(jiān)ther八字