Ryegrass staggers is a seasonal problem of sheep, cattle and horses that feed on overgrazed ryegrass pastures. A fungus (Neotyphodium lolii) that grows between the plant cells of ryegrass produces a poison that affects the nervous system of stock. The sheep in this video clip is severely afflicted, walking with a stiff gait and collapsing with spasms when disturbed. In the early 1980s Lester Fletcher, the scientist being interviewed, discovered the link between ryegrass staggers and the fungus.
Te whakamahi i tēnei tūemi
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.