Ticks
Cattle tick is not a problem in this region
- Climate largely unsuitable for ticks of economic importance to cattle so routine tick treatment programs are not required.
- Any cattle tick infestations found in the tick free area must be reported to the relevant State authority.
Flies
Buffalo flies may become a problem in some areas during very wet seasons.
- Treat if buffalo flies are above industry threshold numbers.
Beef animals. 200 flies
Dairy animals. 30 flies
Lice
Lice on cattle are generally not an economic problem. Only treat when heavily infested as indicated by rubbing on fences or structures.
Seasonal trends
Louse numbers increase
late autumn early spring
Optimal timing of treatment if needed (heavy infestation)
late autumn
Louse numbers increase from late autumn through to early spring and then decline with increasing temperatures in spring and summer. Heavy infestations are usually seen in cattle in poor body condition. In most cases the lice are a consequence, and not the cause, of poor nutritional conditions. Where lice are an on-going problem a single treatment in late autumn will usually provide effective control.
Worms
Routine worm treatment programs not required.
- A WEC at weaning is recommended.
Highest WECs
Autumn
Other worms
Sporadic outbreaks in very wet years or due to crowding of young stock.
Barber’s pole worm (Haemonchus placei)
Nodule worm (Oesophagostomum radiatum)
Small intestinal worms (Cooperia species)
Tools