footrot


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footrot

a disease of the foot characterized by dermatitis of the interdigital skin and with some underrunning of the horn, especially at the heel. Infection under the horn is common. Most forms of the disease are infectious and caused by bacteria. Called also pododermatitis.

bovine footrot
Fusobacterium necrophorum subsp. necrophorum (biovar/biotype A) is the more common type isolated and is usually present in pure culture, but F. necrophorum subsp. funduliforme (biovar/biotype B) is also isolated in some cases, usually with other bacterial species. There is severe dermatitis in the cleft of the foot initially and severe lameness. Further spread to deep structures of the foot, requiring amputation of a claw, may occur. Called also foul-in-the-foot, fouls.
ovine footrot
is caused by Dichelobacter nodosus. A highly contagious inflammation of the skin-horn junction followed by underrunning of the horn and inflammation of the sensitive laminae of the foot. Lameness is severe and may affect all four feet. Dichelobacter (Bacteroides) nodosus is the essential causal pathogen. It is a highly specialized organism in the small taxonomic group, the Cardiobacteriaciae. F. necrophorum aids D. nodosus in the invasion of the foot and contributes in the inflammatory reaction. Two other bacteria, Spirochaeta (Treponema) penortha and a motile fusiform bacillus, are commonly present in affected feet but are believed to have no primary etiological importance.
porcine footrot
a noncontagious infection of the sensitive tissues of the foot caused by abrasive wearing of the horn, usually on the lateral aspect of the lateral digit, and the introduction of a mixed infection. There is abscess formation with scanty pus discharging at the coronet. Can cause severe lameness and a permanently deformed claw in some. Common in pigs housed on abrasive floors. A nutritional deficiency of biotin is thought by some to play a predisposing role or at least that provision of the vitamin has a preventive effect. See also foot abscess.
stable footrot
Bacteroides spp. are the probable cause of minor outbreaks of this horn junction dermatitis which occurs in housed cattle. There is a bad odor, underrunning of the horn and a sebaceous exudate. Secondary infection of the deep structures may occur.
strawberry footrot
is a proliferative dermatitis of the skin of the back of the pastern of sheep caused by Dermatophilus congolensis (D. pedis). It does not resemble any of the other footrots. Called also proliferative dermatitis.
References in periodicals archive ?
Vaccinating against footrot has virtually eliminated the problem, cutting down on family labour time as well as importantly improving sheep health and welfare, say Cumbrian sheep producers the Hewitsons.
If true footrot is the cause of lameness, the only way to break the disease cycle is to undertake a whole flock control programme.
The footrot control programme starts with identification and isolation of infected animals, ideally after weaning and well before pre-tupping.
The use of 3% formalin or 10% zinc sulphate will control scald and prevent it turning into footrot.
There is clearly a need to look for sustainable and long-term solutions including trying to build up a genetic resistance to footrot through selection and culling of persistently lame sheep.
Footrot is estimated to cost the Welsh sheep industry around pounds 7m a year.
5m research programme aims to tackle some of the most harmful and widespread diseases affecting farmed animals in the UK, including bovine TB and footrot in sheep.
A FOUR-year study across 39 UK sheep flocks suggests that a whole flock control programme using vaccines and antibiotics is the best way to treat footrot.
Observe condition of all ewes daily, checking especially for such health problems as footrot, abortion, or respiratory infection.
James, pictured, has already implemented several changes within the 1,250-ewe flock including EID for performance recording and more vigorous selection for worm and footrot resistance.
With footrot being a problem in the sheep industry in the UK, their no-nonsense attitude towards culling anything lame could be an attitude that we ourselves in the UK could benefit from.
According to NAVS, researchers injected the animals - 14 of which were lame with footrot - with a dangerous form of the drug carrageenan.