Managing drench resistance on our farms
Parasitic worms repeatedly exposed to drenching over generations are developing the ability to tolerate it, and this is passed on to their offspring.
The past three years have seen a rapid decline in drench efficacy in both sheep and cattle across Aotearoa New Zealand farms.
According to a recent study, triple drench resistance is a problem faced by more than one‐third of New Zealand farms.
Good farm system practices that improve nutrition to all animals and reduce larval intake by young stock, can reduce our dependence on drench, making resistance less of a threat.
Case studies of four systems on our Pāmu farms show the multi-pronged approach to tackle the issue.
