資源描述：
《奶牛的繁殖障礙課件》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫。
1、奶牛繁殖障礙ReproductiveFailureintheDairyCowPreparedby:Dr.TerryHuntBSc.DVMMRCVS韓特博士DairyHerdHealthSpecialistChina–CanadaAnimalHealthInitiative引起奶牛繁殖障礙的幾個因素ContributingFactorstoReproductiveFailure奶牛營養(yǎng)Nutrition產(chǎn)后感染Post-partuminfections傳染性疾病ContagiousDisease乏情Anestrus/CyclicIrregulariti
2、es久配不孕RepeatBreeders凍精質(zhì)量低下PoorSemenQualityorStorageBodyConditionScore(BCS)營養(yǎng)Nutrition干奶期Dryperiod干奶期營養(yǎng)好壞影響下一個泌乳期的產(chǎn)量高低Whathappensnowaffectshowthecowperformsduringthenextlactation體膘膘度評分（BCS）應(yīng)達到3.75BCSshouldincreaseto3.75泌乳期Lactation能量(1kg精料/3kg牛奶)Energy(1kgofconcentrate/3kgmilk)磷
3、—PPhosphorus微量元素Traceminerals營養(yǎng)性疾病NutritionalDisease產(chǎn)后癱瘓MilkFever臨床性Clinical隱性Sub-clinical真胃移位LeftDisplacedAbomasum消化不良Digestiveupsets酸中毒Acidosis酮病Ketosis原發(fā)性Primary繼發(fā)性Secondary產(chǎn)后感染Post-PartumInfections難產(chǎn)Dystocia胎衣不下RetainedPlacenta子宮炎Metritis子宮膿Pyometra難產(chǎn)Dystocia難產(chǎn)——第一或第二階段延長或缺
4、少Dystocia–1stor2ndstagesofparturitionareprolongedorabsent第一階段–正常情況下6小時Stage1–normalunder6hrs奶牛煩燥不安Cowisrestless子宮開始開張Cervixbeginningtodilate難產(chǎn)Dystocia第二階段–正常情況下2小時Stage2–normalunder2hours產(chǎn)犢Deliveryofcalf第三階段–正常情況下8小時Stage3–normalunder8hrs排出胎衣Expulsionoffetalmembranes難產(chǎn)（續(xù)）Dystoc
5、ia如果第一或第二階段延長則需要進行檢查IndicationtoexamineisifStage1or2isprolonged陰戶清洗消毒Cleananddisinfectperineum帶上手套Wearplasticsleeves使用潤滑劑Uselotsoflubrication確定姿勢及是否還活著Determinepresentation,positionandviabilityoffetus采取措施進行校正Takestepstocorrectsituation胎衣不下/子宮炎RetainedPlacenta/Metritis產(chǎn)后18小時胎衣仍然
6、不下Placentaremainedforatleast18hourspostcalving胎衣不下但不發(fā)生子宮炎RPwithnoMetritis稍微處理一下Minimaltreatment胎衣不下并發(fā)生子宮炎RPwithMetritis沖洗并注射抗生素Infuseandsystemicantibiotics胎衣不下但并發(fā)生膿毒性子宮炎RPwithMetritisandSepticemiaLavageuterus,systemicantibiotics,fluidsandantiinflammatorydrugs子宮膿Pyometra沒有懷孕征狀No
7、positivesignsofpregnancy子宮膿液積累Accumulationofpusintheuterus奶牛沒有其它疾病Cowisnotsick持久黃體Persistentcorpusluteum注射PGTreatwithprostaglandininjection30天以后再配種Wait30daysforbreeding乏情原因CausesofAnestrus沒有發(fā)情LackofEstrus懷孕Pregnancy發(fā)情觀察不準Poorheatdetectiononrectalexam,functionalstructuresonovary
8、子宮膿Pyometravaginaldischarge,fluidinuterusandcorpuslute
