13/03/2026
With all of this warm, wet weather we're having in North Canterbury, our vets are seeing a particularly high number of flystrike cases, in both sheep and alpacas!
A fly struck animal may appear irritated or restless, quiet and separated from herd mates, and may not be eating properly in the early stages of the disease. However, it is important to note that some animals may not show any signs until a large amount of damage has been done, or until we can physically see the damage that has been done. For example, the wool will only fall out later in the disease process and then after this the skin may appear black/necrotic, and sores and a foul odour may be noticeable. Maggots can also be physically seen with the human eye.
How can we treat it?
If you have an animal that seems off colour; it is important to examine them closely and make sure that flystrike is not present - especially if we've had a run of warm and wet weather, preventative treatment hasn't been applied or your animal is due to be shorn.
If you notice your animal has become flystruck, treatment should be initiated immediately. Ring your vet if your sheep is dull and lethargic, otherwise:
Move your sheep to a small pen or yard; this makes it easy to monitor your sheep. Provide plenty of water and feed as well as shelter.
Clip the area; a wide clip beyond the affected area is needed, as sometimes eggs and maggots can be hidden within the wool outside the edges. Remove any maggots and eggs that you can see - and remember to check the area around the clipped region for those hidden maggots!
A fly strike treatment product should then be applied (to kill the maggots and eggs currently present as well as prevent further infestation). Products that we have available for purchase from the clinic include:
- Cyrex
- Zapp Encore
Be sure to follow the application method on the product label, and if you have any questions or concerns then don't hesitate to give our team a call!