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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 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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State Outlooks for March 2016

New South Wales
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Barber's pole infections are still variable but black scour numbers are seen to be on the rise. It's also time to make plans for the April fluke drench.

A 'wet' April is predicted and increased worm burdens and consequent increased production losses continuing into May are expected.

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Contaminating paddocks with worm eggs and larvae in April will lead to major worm issues in the winter.

>> full report

Lack of rain and high temperatures have kept worm burdens low, but recent rains could signal an increase in barber's pole risk and fly strikes.

Western Australia
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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.

>> full report

Egg counts have been satisfactorily low, and it looks like we should have reasonable worm control into the winter. But there are always a few exceptions.

South Australia
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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.