#Sickness in aftermath game skin#
Rarely sows may present with acute ulcerative lesions similar to those seen in baby piglets but usually non-fatal.Ĭhronic recovering Greasy Pig Disease in a finisher likely to lead to skin condemnation and down-grading at slaughterįinally, a rare and fatal form of Staph hyicus infection is reported in individual sows, in which the whole of the skin is affected, becomes progressively thickened and wrinkled (like rhinoceros skin) and progressive severe loss of condition occurs. They may reflect some form of immune incompetence in the individual animal - lesions often remain for life and prove intractable to treatment and litters of affected sows may well show classic greasy pig disease early in life. Here, discreet superficial black lesions occur, usually over the back - are non-irritant and apparently harmless. Here, primary damage occurs close to the coronary band of the hoof, allowing penetration of skin colonising bacteria.Ī further manifestation of greasy pig disease occurs in adults.
Localised greasy pig lesions can also occur on the legs of weaned pigs, starting at the foot and gradually creeping upwards. The latter result is ear tip necrosis, an unsightly but apparently systemically harmless condition. Staph hyicus is implicated in the development of dry gangrene of the extremities - affecting the tail of young piglets, often before tail docking has occurred and the ear tips of weaners of 6-7 weeks upwards. Severe ulcerative dermatitis in a sow associated with Staph hyicus infection This healing process can be extremely slow, to the extent that it can still be unhealed by the time the pig reaches slaughter weight, resulting in condemnation of the skin. The skin will appear shiny, often hairless and have a distinct orange tinge to it. This form of the disease will often appear to spread throughout a group of weaners.Īs older weaners and growers, the aftermath of earlier widespread greasy pig disease in individuals can be seen as part of the healing process. Moreover, discreet dermatitis will commonly occur around the head, neck and shoulders of weaned pigs as a result of colonisation of skin wounds - themselves the result of fighting - by Staph hyicus that is present on the skin. (Fusobacterium necrophorum is the more common cause of this disease).Įrosion of the ear tips secondary to Staph Hyicus infection (ear tip necrosis) Occasionally Staph hyicus can be involved in facial necrosis - the blackening of the skin of the face that results from teeth damage from litter mates where teeth clipping is not practiced. This form of the disease can be seen as young as 24 hours old and is often fatal. The classic form of Greasy Pig Disease in a weaner pigĪt the young end of the scale, an acute ulcerative dermatitis can occur, particularly on the soft skin of the abdomen and chest and can easily be mistaken for a contact ulceration (e.g. It can occur in the sucking piglet as young as 3-4 days and, at this age, can be lethal due to the disturbance that occurs to fluid balance. The younger it occurs, the more serious the consequences. In the young pig, up to 7 weeks of age, the most common presentation of Greasy Pig Disease is one of a brown to black development of scab appearance, starting usually around the shoulder and neck and spreading to part, or the whole, of the body. Staph hyicus can be found on the skin of most pig populations but there appears to be various strains of the bacteria and it is possible that new variants can be introduced (usually with incoming stock) and cause outbreaks of disease.
High humidity levels, producing a moisture layer on the skin, within which the organism can proliferate.A film of grease or faeces over the skin, under which the organism can multiply.Sarcoptic Mange, Pig Pox, Pityriasis Rosea) or injuries from floors, feeders or pen divisions. Damage to the skin, either from fighting, other disease (e.g.The causative organism lives on the skin surface of the pig, but will require some form of trigger mechanism to produce disease.
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