20/07/2025
🦘 Phalaris toxicity in kangaroos 🦘
What is phalaris toxicity?
phalaris grass during new growth during certain times of the year can contain toxic alkaloids, which if grazed, can lead to animals developing phalaris staggers and lead to sudden death.
What are the signs of phalaris toxicity in kangaroos?
Staggers, erratic movements, muscle tremors, shaking, uncoordinated movements, or in severe cases slow body movements, hunched over and unable to move.
The cure?
There is no known cure.
What we know is some develop symptoms very quickly and are followed by a quick deterioration. Others show moderate symptoms but still have good quality of life and movement - not causing severe impairment and do not require human interference.
Others improve on their own.
It is said, that if the animal is removed from the pasture - they may improve or symptoms may not progress.
This year has been particularly hard for our wildlife (and us) with the drought causing a lack of feed and grass for our mobs, that for the first time the shelter has had phalaris effected kangaroos on our property.
The ones currently in care are safe, as their large pens do not have access to this horrible grass.
It previously hadn't been an issue in the area, because there has been plenty of feed around.
Even with us supplementing our local roos with beautiful hay and "roo food" it wasnt enough.
We unfortunately have had to euthanaise some of "our own". This has been absolutely devastating.
Rose, Waru and Clara had mild to moderate symptoms and due to previously being in care, we decided to get them off the pasture and bring them back into care. These 3 were between 2.5-5years old and were living a wild life.
Clara declined and did not make it, with symptoms still progressing and a rapid deterioration even after being brought in to the enclosure with no access to phalaris.
Rose and Waru, originally showed signs of erratic, uncoordinated movements, muscle tremors, hypersensitivity and on constant high alert.
4+ weeks on, and coming to the end of phalaris toxicity season - they are preparing for release again.
With symptoms decreasing significantly over the first week in care. Erratic movements decreased, muscle tremors and hypersensitivity to touch and sound still present, but a slight improvement.
We have watched them as their symptoms slowly got better and can comfortably say neither of these two show any signs of impairment of phalaris toxicity.
Whereas others on the property showed mild signs and within 24 hours had deteriorated so quickly they required euthanasia.
Phalaris and kangaroos still have so much unknown, especially for outcomes for these animals that are impacted.
But we are very happy to share our positive outcome. We know once released, we can only hope the phalaris in the region is past the early stage of growth that poses a risk.
We aren't sure if this will make them more susceptible to further phalaris toxicity, but we do know these guys now have another chance after presenting with mild to moderate toxicity.
📸 Waru - he originally was in care due to significant burns and though prognosis was average, he beat the odds and went on to being released.