通过查阅沼液中含的重金属种类及植物生长所需重金属种类相关文献,表明现在的规模养猪场沼液作为肥料所含重金属成分对土壤的危害性,提出沼液必须经过重金属处理后方可排放到土壤进行灌溉.

The Orf was diagnosed in five large goat county of Guizhou province.Epidemiological survey displays that,hornless black goat,Yanhe black goat,Majiang gazelle and Boer goats of any ages can be infected.The morbidity rate of this disease was 2.2%-117.7%,and the mortality rate was 0-151.4%;According to the sites of pathological changes,the disease can be divided into the lip type,the breast type,the vulva type and mixed type.Among these types,the lip type was most common;the cells in the skin occurred ballooning under light microscopy;the ovoid virus like particle were observed under electron microscopy;PCR was used to detect the pathogenic virus and the amplification was a specific band of 507 bp.Through the epidemiological investigation,clinical symptoms,pathological autopsy change to make an initial diagnosis of the disease,Then through the histological examination,negative staining electron microscope and PCR diagnosed as Orf.

<正>猪直肠脱出俗称"脱肛",是直肠末端黏膜或直肠后侧全层垂脱到肛门外而不能自行复位。常因大便秘结、直肠炎、刺激性药物灌肠、顽固性腹泻、母猪难产、中气下陷、肛门括约肌弛缓或突然改变饲料和维生素缺乏等引起。本病多发于2～4月龄小猪、体弱的架子