Kikuyu grass, or Pennisetum clandestinum, which is a tropical and very hardy grass that is part the Poacea family of true grasses, and one of the largest species of grasses within the world.
A native to East Africa, and named after the Kĩkũyũ tribe , which are an indigenous people from the region where the plant is a native, Kikuyu has been fed to stock for centuries as it’s very drought tolerant and has often provided forage to farm animals in the greatest times of need due to its drought hardiness. It has also been used to prevent soil erosion due to its very deep root system.
This plant is often used on lawns, and in pastures but can become invasive due to its aggressive growth, and is often classed as a weed in many regions due to that.
Research is still undecided on how much of threat this grass is to our horses health, but as all risks associated with toxicity within diet are best to be avoided with our equine friends, I would seriously advise to avoid this plant at all costs, as it has been linked to a disease in horses called "Big Head" -further info can be found here on this http://www.hoofbeats.com.au/Backcopies_archived/archieved_articles/fm10_bighead.html
Plus other links have been made to skeletal weakness in cattle grazing high kikuyu pastures, which is blamed on its high calcium and phosphorus levels, that can block absorption of other critical trace minerals affecting bone density and structure. It has also been linked to several deformities in other species of farm stock too, as well as reference to horse conditions such as big head disease.
Again proven research is not currently available, but some scientist believe that Kikuyu is linked to myco toxin/endophyte exposure too, though further research is needed to confirm this, as the causative agent, which is believed to be associated with army worm predation of the grass, though this has not been firmly identified
We are very aware that there are hundreds of toxins within our paddocks, and thankfully our own Natural Horse Toxin Binder has been designed to be a broad spectrum binder that will control the absorption of all known myco toxins as to protect your horse from the build-up of toxins in his system.
The good news is the thing Kikuyu hates the most is salt, so it can be successfully controlled by using non chemical, hot water salt sprays, as well as to make sure your horse has access to unrefined salt to help internally too.