{"title":"病例报告","authors":"K. Emery, G. Oetzel","doi":"10.21423/bovine-vol35no1p61-65","DOIUrl":null,"url":null,"abstract":"Polioencephalomalacia (PEM) is a neurologic condition in ruminants that can be caused by several dietary factors including water deprivation-sodium ion toxicosis, lead poisoning and high sulfur intake. Three month old calves on a 1500-cow dairy experienced neurologic problems during three separate episodes. The morbidity rate approached 75% each time. Based upon post-mortem examination, three of the affected calves were diagnosed with PEM. The history revealed a change in the formulation of the pelleted feed four days prior to the initial outbreak. Wet chemistry analysis of the pelleted feed revealed a sulfur content of0.56% (dry matter basis), which was considered to be the cause of the PEM outbreak.","PeriodicalId":22281,"journal":{"name":"The Bovine practitioner","volume":"51 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2019-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Case report\",\"authors\":\"K. Emery, G. Oetzel\",\"doi\":\"10.21423/bovine-vol35no1p61-65\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Polioencephalomalacia (PEM) is a neurologic condition in ruminants that can be caused by several dietary factors including water deprivation-sodium ion toxicosis, lead poisoning and high sulfur intake. Three month old calves on a 1500-cow dairy experienced neurologic problems during three separate episodes. The morbidity rate approached 75% each time. Based upon post-mortem examination, three of the affected calves were diagnosed with PEM. The history revealed a change in the formulation of the pelleted feed four days prior to the initial outbreak. Wet chemistry analysis of the pelleted feed revealed a sulfur content of0.56% (dry matter basis), which was considered to be the cause of the PEM outbreak.\",\"PeriodicalId\":22281,\"journal\":{\"name\":\"The Bovine practitioner\",\"volume\":\"51 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-08-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The Bovine practitioner\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.21423/bovine-vol35no1p61-65\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Bovine practitioner","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21423/bovine-vol35no1p61-65","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Polioencephalomalacia (PEM) is a neurologic condition in ruminants that can be caused by several dietary factors including water deprivation-sodium ion toxicosis, lead poisoning and high sulfur intake. Three month old calves on a 1500-cow dairy experienced neurologic problems during three separate episodes. The morbidity rate approached 75% each time. Based upon post-mortem examination, three of the affected calves were diagnosed with PEM. The history revealed a change in the formulation of the pelleted feed four days prior to the initial outbreak. Wet chemistry analysis of the pelleted feed revealed a sulfur content of0.56% (dry matter basis), which was considered to be the cause of the PEM outbreak.
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