Australia's resource for control of worms, flies and lice in sheep, and worms in goats
Weather vane atop the shearing shed at "Gostwyck", Uralla, NSW.
Weather is the major influence
It’s autumn, but temperatures are still elevated. In many southern regions good falls of rain will increase the risk of barber’s pole in the next few weeks before daily maximum temperatures drop to below the 18°C cut-off limit for development. Black scour is also on the rise. Typically, in March, the incidence of flystrike reaches its peak and flystrike warnings have been issued. Northern parts of the country are still desperately in need of rain for sheep survival.
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Autumn is a make-or-break season for sheep worm control. Where the pasture has stayed green through summer, barber's pole worm risk will be greater than in normal years. The April drench should now be brought forward.
Worm testing sheep 3-4 weeks after grazing green feed is the most effective means to check whether worms are present. Good falls of rain on the Eyre Peninsula in the last fortnight has caused a flystrike warning to be issued.