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Sheep and goats are both small ruminants with cosmopolitan distributions due to their being kept historically and in modern times as grazers both individually and in herds in return for their production of milk, wool, and meat. [1] As such, the diseases of these animals are of great economic importance to humans.
Orf is a zoonotic disease, meaning humans can contract this disorder through direct contact with infected sheep and goats or with fomites carrying the orf virus. [6] It causes a purulent-appearing papule locally and generally no systemic symptoms.
Four species infect humans: B. abortus, B. canis, B. melitensis, and B. suis. B. abortus is less virulent than B. melitensis and is primarily a disease of cattle. B. canis affects dogs. B. melitensis is the most virulent and invasive species; it usually infects goats and occasionally sheep. B. suis is of intermediate virulence and chiefly ...
Eimeria is a genus of apicomplexan parasites that includes various species capable of causing the disease coccidiosis in animals such as cattle, poultry and smaller ruminants including sheep and goats. [2]
Electron micrograph of Bluetongue virus, scale bar = 50 nm. Bluetongue (BT) disease is a noncontagious, arthropod-borne viral disease affecting ruminants, [1] primarily sheep and other domestic or wild ruminants, including cattle, yaks, [2] goats, buffalo, deer, dromedaries, and antelope. [3]
The disease is endemic in the Indian subcontinent and is a major threat to fast-growing goat husbandry in India, causing an annual loss of around 1800 million Indian rupees. In North Africa , only Egypt was once hit, but since summer 2008, Morocco is suffering a generalized outbreak with 133 known cases in 129 provinces , mostly affecting sheep ...
First described in 1954 by Bjorn Sigurdsson in Iceland, [6] Maedi-visna virus was the first lentivirus to be isolated and characterized, accomplished in 1957 by Sigurdsson. [6] [7] [8] Maedi (Icelandic mæði 'dyspnoea') and visna (Icelandic visna 'wasting' [9] or 'shrinking' of the spinal cord) refer to endemic sheep herd conditions that were only found to be related after Sigurdsson's work.
Dictyocaulus viviparus found in the bronchi of a calf during necropsy (arrow). Parasitic bronchitis, also known as hoose, husk, or verminous bronchitis, [1] is a disease of sheep, cattle, goats, [2] and swine caused by the presence of various species of parasite, commonly known as lungworms, [3] in the bronchial tubes or in the lungs.