奶牛的繁殖障礙課件

奶牛繁殖障礙

ReproductiveFailureintheDairyCow

Preparedby:Dr.TerryHuntBSc.DVMMRCVS韓特博士DairyHerdHealthSpecialistChina–CanadaAnimalHealthInitiative引起奶牛繁殖障礙的幾個(gè)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/CyclicIrregularities久配不孕

RepeatBreeders凍精質(zhì)量低下

PoorSemenQualityor Storage營養(yǎng)

Nutrition干奶期

Dryperiod干奶期營養(yǎng)好壞影響下一個(gè)泌乳期的產(chǎn)量高低Whathappensnowaffectshowthecowperformsduringthenextlactation體膘膘度評分（BCS）應(yīng)達(dá)到3.75

BCSshouldincreaseto3.75泌乳期

Lactation能量(1kg精料/3kg牛奶)

Energy(1kgofconcentrate/3kgmilk)磷—P

Phosphorus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難產(chǎn) Dystocia難產(chǎn)——第一或第二階段延長或缺少Dystocia–1stor2ndstagesofparturitionareprolongedorabsent第一階段–正常情況下6小時(shí)

Stage1–normalunder6hrs奶牛煩燥不安 Cowisrestless子宮開始開張 Cervixbeginningtodilate難產(chǎn)（續(xù)）Dystocia 如果第一或第二階段延長則需要進(jìn)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(jìn)行校正

Takestepstocorrectsituation胎衣不下/子宮炎

RetainedPlacenta/Metritis

產(chǎn)后18小時(shí)胎衣仍然不下 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

Nopositivesignsofpregnancy子宮膿液積累 Accumulationofpusintheuterus奶牛沒有其它疾病Cowisnotsick持久黃體

Persistentcorpusluteum注射PG

Treatwithprostaglandininjection30天以后再配種

Wait30daysforbreeding

乏情原因 CausesofAnestrus

胎兒木乃伊

FetalMummification

cowfailstocalveandonrectalpalpation,feelbonesandnofluid注射PG

Treatprostaglandin異性雙胞母犢的性缺陷

Freemartin

heifertwintoabull黃體囊腫

Lutealcysts

onrectalexam,singleenlargedstructureonovary

注射PG

Treatwithprostaglandin久配不孕 RepeatBreeders人工授精技術(shù)差

PoorAItechnique奶牛營養(yǎng)不良

Malnutrition熱應(yīng)激

Heatstress卵泡囊腫

Follicularcysts久配不孕（續(xù)）RepeatBreeders傳染性

Infectious卵巢疾病

OvarobursalDisease輸卵管炎

Salpingitis子宮內(nèi)膜炎 Endometritis–inflammationofliningofuterus注射PG后的30天內(nèi)禁止交配TreatProstaglandinandsexuallyrestfor30days傳染性流產(chǎn)

Infectious

Abortion

彎曲桿菌病

Campylobacteriosis陰道滴蟲病

Trichomoniasis布氏桿菌病

Brucellosis鉤端螺旋體

Leptospirosis牛傳染性鼻氣管炎

IBR牛病毒性腹瀉

BVD原蟲性流產(chǎn) Neospora繁殖性能低下可能由許多因素引起的PoorReproductivePerformancecanbecausedbyacombinationofmanyfactors

營養(yǎng)不良

PoorNutrition衛(wèi)生不良

UnsanitaryConditions代謝性疾