Abdominal fat necrosis
Abdominal fat necrosis (lipomatosis) is a nutritional disease of cattle associated with grazing fescue pastures.
This disease has been diagnosed in Jersey, Guernsey, Japanese Black and beef cattle grazing fescue for long periods, and is thought to be caused by liberation of pancreatic enzymes in pancreatitis, pressure and trauma, febrile conditions, grazing on tall fescue grass, rapid cachexia, or genetic predisposition.
Most affected cattle are asymptomatic and a diagnosis is usually made during exploratory laparotomy or during rectal examination.
Lesions appear as “floating corks” when palpated per rectum and are usually painless. In severe cases, these growths may cause intestinal obstruction or colic.
Diagnosis is based on presenting clinical signs augmented by histological examination of biopsied material.
Treatment usually requires surgical excision of large masses if secondary disease occurs as a result of mechanical obstruction of the intestines
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