Internal parasites remain the most costly disease to the sheep industry of Australia and thus to serve your sheep clients well, requires a good understanding of this issue.
Integral to parasite management is the worm egg count (WEC) which enables us to get a picture of the parasite burden in the animal and to what contamination is being put onto the pasture. All non-strategic drenches should be preceded by a WEC. A drench resistance test is the most valuable way we have of determining what drenches we should be using.
Looking at the whole farm approach requires us to follow the principles of integrated parasite management (IPM). This requires us not only to look at what drench to use and when, but also to consider the whole farm, the management of the animals and pastures including the seasons and genetics.
This presentation will examine
1. Drenches what works for that farm and how to choose which to use.
2. The timing of drenches,
3. The importance of grazing management,
4. The role of nutrition,
5. Flock and weaner management
6. Genetics selecting for resistance and/or resilience in the flock.
7. Monitoring and testing
8. Other potential tools
Parasite control does not happen in isolation, so all decisions have to be made along with a good understanding of their effects on the whole farm management.