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black quarter,

acute infectious disease of cattle, less often of sheep, caused by an organism of the genus Clostridium. It is characterized by inflammation of muscles with swelling and pain in the affected areas. Toxins formed by the organism produce severe muscle damage, and mortality is high. Animals between the ages of six months and two years are most commonly affected. Treatment with large doses of antibiotics is only partially successful; in endemic areas, young animals can be vaccinated for prevention.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



an acute infectious disease of cattle, characterized by crepitating edema, lameness, and quick death. Blackleg, which occurs in various geographical areas, is caused by the spore-forming anaerobic microbe Clostridium chauvoei. The microbe’s spores are preserved for many years in soil or water. In decomposing muscle tissue they live for as much as six months, while in the sun they die in 24 hours and in a corrosive sublimate solution (1:500) they die in ten minutes. Blackleg affects young cattle and occasionally sheep and goats. Susceptibility decreases with the animal’s age.

The source of the disease-causing microbe is an animal infected with blackleg. Factors aiding transmission of the disease are infected feeds and objects used in caring for the animals. Infection enters the body through the digestive tract with food and water or through a break in the skin. The disease is usually observed during the pasturing period. Infected animals show a sudden rise in body temperature and become lame. Painful, hot, dense swellings appear on the animals’ croup and loins. Crackling (crepitation) is observed when pressure is applied to these swellings, which contain bubbles of gas. The animals show signs of depression. They salivate excessively and stop ruminating. Their breathing becomes more frequent, and their pulse weakens. The animal dies within ten to 60 hours. The corpse is usually very bloated. A foamy liquid runs from the nose and mouth, and a bloody liquid from the anus.

Diagnosis is based on epizootic data, clinical symptoms, pathological anatomical changes, and bacteriological tests. Blackleg should be distinguished from anthrax and malignant edema by identifying the specific causative organism. Treatment, which is not always effective, involves the use of antibiotics. When the disease breaks out, the infected farm is quarantined. The affected animals are identified, isolated, and treated, as are those suspected of having the disease. The rest are vaccinated with a vaccine of concentrated aluminum hydroxide. The animal stalls are thoroughly disinfected, as are the places where sick or dead animals were kept.

It is forbidden to use the meat or skins from infected animals. After the last case of the disease is cured or the animal dies the premises are disinfected thoroughly and the quarantine is lifted in 14 days. In farms where there were previous cases of blackleg, the cattle are vaccinated two weeks before they are sent out to pasture.


Kagan, F. I., and A. I. Kolesova. “Emfizematoznyi karbunkul.” In Diagnostika infektsionnykh i protozoinykh boleznei sel’skokhoziaistvennykh zhivotnykh. Moscow, 1968. (Album.)
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


(veterinary medicine)
An acute, usually fatal bacterial disease of cattle, and occasionally of sheep, goats, and swine, caused by Clostridium chauvoei.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


an acute infectious disease of cattle, sheep, and pigs, characterized by gas-filled swellings, esp on the legs, caused by Clostridium bacteria
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
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Ket Saroeun, the head of the veterinary office at the provincial Department of Agriculture, Forestry and Fisheries, told The Post that cattle are susceptible to infectious diseases - such as taenia (a type of tapeworm), picornavirus, blackleg and pasteurellosis - when they eat grass that has recently been sprayed with insecticide or drink contaminated water.
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Epidemiology and clinical and pathological manifestation Blackleg is an endemic disease in both developed and developing countries and a well-known cause of financial loss to cattle breeders (USEH et al., 2006b).
Isolation of the pathogen associated with blackleg disease of Irish potato (Solanum tuberosum L.) plants showing typical symptoms of blackleg disease were collected in polythene bags and brought to the laboratory for isolation of bacterium.
Study area: A total of (n=750) swab and (n=50) tissue samples of cattle suspected for blackleg reported in six districts (please provide details) of Punjab Pakistan were collected aseptically placed in ice bags and transported to Department of Pathology University of Veterinary and Animal Sciences Lahore (Pakistan) for the isolation and identification of Clostridium chauvoei.
Beasley, aware that to call a man a blackleg was a form of intimidation not permitted by law, no doubt chuckled as he filed the notice away for future use.
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At the Potato Council's Sutton Bridge experimental unit, storage specialist Adrian Cunnington said: "A lot of the problems appear to be secondary bacterial rots triggered by small amounts of blight, blackleg or pink rot in the tubers.
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Clostridial myonecrosis can also be divided into two diseases, blackleg and gas gangrene, according to its etiological agent and pathogenesis.
Mining music will also be showcased, with songs such as the Blackleg Miner and Byker Hill and Walker Shore.