加拿大奶牛肉牛乳酸中毒

乳酸中毒 Lactic Acidosis in Dairy CowsPrepared by: Dr. Terry Hunt Translated by Dr. Fu Xiaoping病因/发病机理 C

LacticAcidosisinDairyCows 乳酸中毒 Preparedby:Dr.TerryHunt TranslatedbyDr.FuXiaoping Cause&Pathogenesis 病因/发病机理 度饲喂发酵型碳水化合物(谷类/精料) •过 Indairycattle,themajorcauseofacidosisistheoverengorgementonfermentable carbohydrates(grain/concentrate) pH<5 形成的乳酸降低瘤胃 •发酵 FermentationofcarbohydratestolacticacidlowersthepHoftherumen<5 死利用乳酸的细菌和原虫，增加产酸菌数量 •将杀 Thisupsetstherumenflorakillinglactateutilizingprotozoaandbacteriaandincreasingthe numberofacidproducingbacteria 性乳酸中毒 •急•亚 乳酸中毒类型 TypesofLacticAcidosis 急性乳酸中毒床或慢性瘤 •亚临 胃酸中毒 AcuteToxicLacticAcidosis SubAcuteLacticAcidosis Sub-ClinicalorChronicRumenAcidosis AcuteToxicLacticAcidosis 急性乳酸中毒 ClinicalFindings 临床症状 Completeanorexiaandagalactiae 下降、无乳 •食欲 温低于正常、快而浅呼吸、心跳加快 •体 Temperaturebelownormal,rapidshallowbreathingandelevatedheartrateProfuse •水样 watery,sweetsmellingdiarrhea Dehydration •脱水 Bloat 胃殿气 •瘤 Fluidfilledstaticrumen 中大量积液 ,胃 摆、虚弱直至卧地不起 •摇 Staggering,weaknessprogressingtorecumbency Oftendieifuntreated 疗时经常死亡 •不治