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Annual Ryegrass Toxicity Research Update, A G P Brown, P. Vogal
Annual Ryegrass Toxicity Research Update, A G P Brown, P. Vogal
Journal of the Department of Agriculture, Western Australia, Series 4
Annual ryegrass toxicity (ARGT) is a complex disease that kills sheep and cattle grazing pastures which contain infected ryegrass. The disease results when a nematode (Anguina agrostis) and a batcerium (Corynebacterium sp.) invade annual ryegrass and cause the seed heads to become toxic as the grass dries off.
The bacterium produces a complex toxin of 18 glycolipid compounds or corynetoxins which have been found to be virtually identical to the antibiotic tunicamycin.
Ryegrass Disease Could Spread, Department Of Agriculture, Western Australia
Ryegrass Disease Could Spread, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
The disease annual ryegrass toxicity kills sheep and cattle grazing pastures which contain infected annual ryegrass. In Western Australia the first confirmed outbreak was in 1968 in the Gnowangerup area.
The disease has noe spread over a range of 450 kilometres and with a total area of perhaps 100 000 hectares. because annual ryegrass is the major sown pasture grass in W.A. the disease could spread throughout the South-West.
There are some precautions that can be taken.