Bovine Herpes Mammillitis (Ulcerative mammillitis)
德洪特博士供稿Prepared by: Dr. Terry Hunt
Translated by: Maria Mai
病因/發(fā)病機(jī)理
Cause & Pathogenesis
- 牛皰疹病毒 Bovine Herpes virus 2
- 家畜皮膚感染性疾病 Contagious skin disease of cattle
- 乳頭皮膚嚴(yán)重潰瘍 Severe ulceration of teat skin
- 發(fā)病率高但不會(huì)造成死亡High morbidity but no mortality
- 可產(chǎn)生免疫性 Develop immunity
危險(xiǎn)因素
Risk Factors- 外來(lái)帶病牛 Introduced carrier cows
- 昆蟲(chóng) Insects
臨床癥狀
Clinical Findings·
潛伏期:5 –10天
Incubation period of 5-10 days ·
初發(fā)于新產(chǎn)牛,逐漸蔓延到全群
Starts in freshly calved cows then spreads through herd
- 初產(chǎn)牛發(fā)病最嚴(yán)重 Most severe in fresh cows
- 急性、乳頭腫脹、觸痛 Acute, swollen tender teats
- 最初由水皰導(dǎo)致脫皮,進(jìn)而形成嚴(yán)重潰瘍
Vesicles formed then slough and form severe ulcers
·
形成深褐色或黑色結(jié)痂,然后可能開(kāi)裂
Forms dark brown or black scabs that may crack
- 會(huì)感染乳頭管 May involve the teat canal
- 造成減產(chǎn) Decreased milk production
- 增加乳房炎發(fā)病率 Increased incidence of mastitis
- 約3-4個(gè)月可痊愈 May take 3-4 months to heal
診斷
Diagnosis- 有過(guò)病史和臨床癥狀 History and clinical signs
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