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Acute Bovine Liver Disease

The sudden death of one or more cattle is often the first sign of Acute Bovine Liver Disease (ABLD), formerly known as Rough Dogstail Associated Syndrome.

By Department of Primary Industries - 12th April 2005 - Back to News

Diagnosis of ABLD is difficult as the symptoms are similar to those caused by Facial Eczema, Blue Green Algae toxicity or Boobialla poisoning.

Affected cattle suffer acute liver damage and may die within a day or two of exposure to the toxin, and the survivors generally suffer from photosensitization.

If affected cattle are to be saved, immediate veterinary treatment is necessary.

In recent weeks there have been several suspected outbreaks of the disease in East Gippsland. The clinical picture has been the same in each case; there is a sudden onset of depressed milk supply followed 12 –24 hours later by either death or a very sick animal. Some of the cattle have developed photosensitivity in conjunction with a bloated appearance. On post mortem examination there is severe haemorrhagic signs in the fourth stomach and intestines as well as large haemorrhages on the heart, liver, gall bladder, kidneys and lining of the abdominal cavity. Microscopic examination of the liver shows an extensive picture of cell destruction.

The toxic principle is at present not known but is thought to be a fungal toxin produced on pasture given the right conditions. The disease seems to occur in the autumn when the weather conditions are balmy, with dewy nights and fine, still days. Rough Dogstail is often present, however it is uncertain whether this grass actually causes the disease.

DPI Animal health staff are coordinating the collection of information regarding outbreaks of ABLD in an effort to pin point the cause of the disease.

In the meantime, any sudden deaths or onset of photosensitization in your herd should be investigated and treated by your vet. For further information contact your local District Veterinary Officer.

CROP HEALTH SERVICES - KNOXFIELD

The Crop Health Services (CHS) Diagnostic Service offers a comprehensive range of diagnostic services on plant diseases and pests and will also provide management recommendations as appropriate.

CHS have diagnostic, technical and taxonomic staff knowledgeable in all aspects of plant diseases, plus specialist backup from Institute for Horticultural Development scientists and resources.

Features of the Service

• rapid and accurate diagnosis
• unbiased and up-to-date advice
• specialist staff and facilities
• confidentiality of client information
• AQIS approval
• AS/NZS 9001:2000 quality assurance certification

Benefits

Increased profits through:

• more cost-efficient control of pests and diseases; and
• improved production, quality and marketability of produce.

Source: http://gippsland.com/

Published by: news@gippsland.com

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