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En on SAM CONNOR Agriculture Assignment Microbes and Invertebrates Internal Parasite Common name: Liver fluke Scientific name: Fasciola hepatica Life cycle: Damage it causes: The liver fluke can easily kill a full grown cow if it is not controlled. This is because it attacks the liver of the cow and other organs. The main problem with this disease is that when it attacks the organs the damage can not be repaired, so that when the cow is sent of to market the organs can’t be used or sold because they are damaged. While to cow has this disease production by the animal s dramatically reduced by the liver fluke. Condition favoured: It is a flat, leaf-shaped parasite about 3cm wide. It lives in the bile-ducts and the livers of the animal. It cause loss of production and can even kill an animal. It is commonly found over south-eastern Australia, in New South Wales and the table land slopes. It prefers temperatures between 15°C and 25°C. The cooler the temperature the slower it grows. Method of control: For this disease in sheep it is necessary to treat it with drugs lethal to flukes.