Summer rain can be a blessing, but for Wheatbelt livestock producers, it can also bring a hidden danger: lupinosis. This liver disease, triggered by a specific fungus, poses a serious threat to sheep flocks, especially after heavy rainfall. Let's dive into how to protect your animals.
Reports of lupinosis have been surfacing, particularly in areas where lupin crops are used for grazing. The Department of Primary Industries and Regional Development (DPIRD) field veterinary officer, Judy Burson, strongly advises regular monitoring of your sheep.
"Lupin crops are a great feed source, but careful management is key," Dr. Burson emphasizes.
So, what are the telltale signs? Early indicators can be subtle: reduced appetite, weight loss, disorientation, and lethargy. You might notice sheep lagging behind the flock or staying near water sources. More severe cases involve disorientation, blindness, head pressing, a hunched posture, and yellowing around the eyes and mouth.
But here's where it gets critical: If you suspect lupinosis, immediate action is crucial. Remove affected animals from the paddock immediately and consult a veterinarian for diagnosis. The sooner you act, the better the outcome for your flock.
Lupinosis is primarily caused by the fungus Diaporthe toxica (formerly Phomopsis leptostromiformis) found in lupin stubble. While modern narrow-leaf lupin varieties often have some resistance, they can still be affected under the right conditions.
What happens after diagnosis? Dr. Burson recommends moving affected livestock to a small paddock with ample shade and water for a couple of weeks. Provide high-quality hay and small amounts of oats, but avoid lupins, as the damaged liver struggles with high-protein diets. Recovery can take up to six months in some cases.
A word of caution: Lupinosis symptoms can mimic other diseases, including those exotic to Australia. A professional diagnosis by a veterinarian is essential.
Here's an interesting point: Subsidies may be available under the Significant Disease Investigation Program to aid in early detection. Contact your private veterinarian or a DPIRD field veterinarian for more information. Details on lupinosis identification and management are available on the Lupinosis webpage.
What are your thoughts? Have you experienced lupinosis in your flock? What preventative measures do you find most effective? Share your experiences and insights in the comments below!
