猪皮肤疾病的鉴别诊断.PPT

Swine vesicular disease. Snout vesicular lesion. Vesicular lesions on snout. Recently ruptured blister on rim of snout. Recently ruptured blister on foot. Separation of horn following rupture of blister. Ruptured vesicle on snout and tongue. Lesions on coronary band, bulb of heel and supernumerary digit. Recently ruptured vesicle on interdigital space. Ruptured vesicles on coronary band. Separation of bands. Vesicular exanthema of swine (VES) An acute, contagious, viral disease of swine manifested by the formation of vesicles. Vesicular exanthema is indistinguishable from the other swine diseases such as FMD, VS and SVD. Antemortem findings: Incubation: 2–4 days Large number of hogs are affected. Heavy mortality in suckling pigs Blotchy rash in unpigmented skin (exanthema) Vesicles on the snout and in the mouth. Ruptured vesicles result in erosions Loss of weight Walking on their knees (Fig. 122) and lameness Squealing when forced to move Postmortem findings : Vesicles on mucous membranes and skin Vesicular exanthema. Pig walking on knees due to pain from the vesicular lesion on the feet. Foot and Mouth Disease (FMD, Aphthous fever) FMD is a contagious, viral disease of swine, cattle, sheep, goats and pigs and other cloven footed animals. The disease in pigs is mild and is important as being a potential danger for transmission to cattle. 螺旋体病leptospirosis Leptospirosis is a disease of domestic animals caused by bacteria belonging to the genus Leptospira. These organisms have a world wide distribution and cause economic loss primarily through reproductive wastage. Losses are greatest in animal populations kept under the intensive farming systems found in the developed world. Specific strains are maintained by different domestic animal hosts, e.g. serovar hardjo is maintained by cattle and serovar bratislava is maintained by pigs. Leptospirosis is a zoonosis which primarily affects people working in agriculture and related occupations. ?????????????????????