奶牛的繁殖障碍课件

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1、奶牛繁殖障碍ReproductiveFailureintheDairyCowPreparedby:Dr.TerryHuntBSc.DVMMRCVS韩特博士DairyHerdHealthSpecialistChina–CanadaAnimalHealthInitiative引起奶牛繁殖障碍的几个因素ContributingFactorstoReproductiveFailure奶牛营养Nutrition产后感染Post-partuminfections传染性疾病ContagiousDisease乏情Anestrus/CyclicIrregulariti

2、es久配不孕RepeatBreeders冻精质量低下PoorSemenQualityorStorageBodyConditionScore(BCS)营养Nutrition干奶期Dryperiod干奶期营养好坏影响下一个泌乳期的产量高低Whathappensnowaffectshowthecowperformsduringthenextlactation体膘膘度评分（BCS）应达到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营养性疾病NutritionalDisease产后瘫痪MilkFever临床性Clinical隐性Sub-clinical真胃移位LeftDisplacedAbomasum消化不良Digestiveupsets酸中毒Acidosis酮病Ketosis原发性Primary继发性Secondary产后感染Post-PartumInfections难产Dystocia胎衣不下RetainedPlacenta子宫炎Metritis子宫脓Pyometra难产Dystocia难产——第一或第二阶段延长或缺

4、少Dystocia–1stor2ndstagesofparturitionareprolongedorabsent第一阶段–正常情况下6小时Stage1–normalunder6hrs奶牛烦燥不安Cowisrestless子宫开始开张Cervixbeginningtodilate难产Dystocia第二阶段–正常情况下2小时Stage2–normalunder2hours产犊Deliveryofcalf第三阶段–正常情况下8小时Stage3–normalunder8hrs排出胎衣Expulsionoffetalmembranes难产（续）Dystoc

5、ia如果第一或第二阶段延长则需要进行检查IndicationtoexamineisifStage1or2isprolonged阴户清洗消毒Cleananddisinfectperineum带上手套Wearplasticsleeves使用润滑剂Uselotsoflubrication确定姿势及是否还活着Determinepresentation,positionandviabilityoffetus采取措施进行校正Takestepstocorrectsituation胎衣不下/子宫炎RetainedPlacenta/Metritis产后18小时胎衣仍然

6、不下Placentaremainedforatleast18hourspostcalving胎衣不下但不发生子宫炎RPwithnoMetritis稍微处理一下Minimaltreatment胎衣不下并发生子宫炎RPwithMetritis冲洗并注射抗生素Infuseandsystemicantibiotics胎衣不下但并发生脓毒性子宫炎RPwithMetritisandSepticemiaLavageuterus,systemicantibiotics,fluidsandantiinflammatorydrugs子宫脓Pyometra没有怀孕征状No

7、positivesignsofpregnancy子宫脓液积累Accumulationofpusintheuterus奶牛没有其它疾病Cowisnotsick持久黄体Persistentcorpusluteum注射PGTreatwithprostaglandininjection30天以后再配种Wait30daysforbreeding乏情原因CausesofAnestrus没有发情LackofEstrus怀孕Pregnancy发情观察不准Poorheatdetectiononrectalexam,functionalstructuresonovary

8、子宫脓Pyometravaginaldischarge,fluidinuterusandcorpuslute