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September 2015 ParaBoss News

From the Editor

Early spring was dominated by high temperatures with a return to more usual levels later in the month. Good rains fell over much of the coastal and subcoastal temperate regions while the pastoral zones remained very dry.

While not all worms ‘disappear’ when temperatures drop, neither do all worms disappear when conditions become dry. The difference between worms is how they wait out the dry times. For instance, Haemonchus (barber’s pole worm) eggs and larvae are not at all dry-tolerant, so the adults find a quiet spot inside the sheep. When areas of green pick around leaky watering points encourage sheep activity, these adults respond by producing spectacular numbers of eggs resulting in hotspots of infection in an otherwise dry landscape. In contrast, the scour worms such asTrichostrongylus spp (scour worms) and Teladorsagia (small brown stomach worm)find the drier conditions not quite so taxing and the relatively few eggs produced wait stoically on pasture for rain before continuing on.

In the State Outlooks this month, conversation is all about the weaners, fresh low worm-risk paddocks and efficient drenches.

Maxine Murphy

Feature articles

Reduced efficacy of new drenches? Be alert, not alarmed

By Stephen Love, Veterinarian / Research Officer (Parasitology), NSW DPI

Recently there have been a small number of confirmed reports of reduced efficacy, including resistance, involving new sheep drenches in Australia. What should sheep producers do? >> Read more.

Barber’s pole worm in winter, non-seasonal and Mediterranean rainfall areas

by Deb Maxwell, ParaBoss Operations Manager

Barber’s pole worm (Haemonchus contortus) occurs in all sheep production areas of Australia, even in arid areas. With the introduction of the Barbervax® vaccine it is timely to clarify the areas of Australia in which it is recommended for use and how to manage barber's pole worm where it is sporadic. >> Read more.

Lamb's tails; how long is long enough?

from the FlyBoss web site

Docking the tail to the correct length at lamb marking time is crucial in minimising stain around the breech and reducing flystrike risk throughout the sheep’s life. >> Read more.

Stripping, topping up and all the other jargon

from the LiceBoss web site

If you sometimes struggle with the jargon on lice product labels, you're not the only one. See our product label terminology page to make sense of those terms. >> Read more.

The quick quiz

This 3-question quick quiz tests your knowledge of sheep parasites and their control. 
>> Take the quiz.

This month's polls

Click the question to open the page then go to the poll at the top right hand corner of each web site. 

WormBoss: Did you prepare a low worm-risk paddock during the last 12 months?

FlyBoss: Do you apply a flystrike preventative treatment each year? If so, what deterines the time it is appplied?

LiceBoss: Between your most recent main shearing and the main shearing before that, did you apply a lice treatment, and if so, how long after shearing?

>> View results of previous polls


For September 2015 state outlooks, please follow the links below:
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