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Australia's resource for control of worms, flies and lice in sheep,
and worms in goats

From the Editor

Wet winters dominated much of the southern half of the country, while the northern regions were dry. There is also much talk about the predicted El Niño weather event and what effect the expected lower minimum and higher maximum ground level temperatures (as opposed to air temperatures) will have on the longevity of worm eggs and larvae on pasture.

Keep these few simple principles in mind at the start of a new season:

1. Don't guess—test for worm burdens with WormTest (WECs)

2. Don’t guess—test for drench effectiveness with a Drench Resistance Test, otherwise relief could be very short lived.

3. Don’t guess—use the proven Drench Decision Guide for your region.

Seek professional advice if you are at all uncertain or have resistance issues.

If you intend using capsules in your sheep I recommend you read Dr Paul Nilon‘s comments (last paragraph Tasmanian State Outlook). His experience of seeing the result of a truly awful application technique will convince you to become familiar with the manufacturer’s recommended procedure.

I encourage you to complete the polls on each of the web sites to inform ParaBoss about current practices and issues.

Congratulations to the winners of the ParaBoss News subscription competition, and thanks again to the sponsors:

  • Riverina Stockfeeds prize: Iain McDermid, Cowra, NSW
  • Allflex prizes: Greg Sinclair, Naracoorte, SA; Don Reynolds, Young, NSW; Kerry Glasser, Goondiwindi, Qld; Grant Simpson, Braidwood, NSW.
  • ACTA Mouseoff prizes: Glenn Nix, Boyup Brook, WA; Andrew Campbell, Mooralla, Victoria; Allen Kelly, Manoora, SA; Robbie Tole, Cressy, Tasmania.

ParaBoss News Editor, Maxine Murphy

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Feature articles

Barbervax®—a vaccine to protect against barber's pole worm

by Deb Maxwell, ParaBoss Operations Manager

A year after its release, is the Barbervax vaccine the answer to problems with barber’s pole worms?
>> Read more.

Is it better to treat for flystrike on the same date every year, or to wait and see?

by Brian Horton, Senior Animal Scientist, University of Tasmania

There is no best answer, but there are a few rules you can use. 
>> Read more.

Sheep ked, nasal bot fly, itch mite and sheep scab

by Deb Maxwell, ParaBoss Operations Manager

Four parasites that are either suppressed by other management, nearly gone, or eradicated from Australia; making sheep production easier and more profitable. 
>> Read more.

The quick quiz

A 3-question quick quiz about sheep parasite control. 
>> Take the quiz.

This month's polls

Polls are at the top right hand corner of each web site. 
WormBoss: Do you have drench resistance on your property?
FlyBoss: In high flystrike-risk periods, how often do you check mobs for flystrike?
LiceBoss: Which of the following lice control strategies do you feel least confident about?
>> View results of previous polls

State Outlooks for August 2015

New South Wales
>> full report

Some areas of the state have had good rains and excellent worm seasons while other areas have been dry with worm egg counts remaining generally low to moderate. In some areas there have been some nutritional/black scour worm issues. Producers in the Young area formed a lice control group with the local DV’s providing technical advice.

>> full report

Concern about another dry spring means producers need to ensure that sheep maximise weight gains on spring feed. Worm egg counts in south west Victoria rose sharply in July and further in August.

>> full report

Dry conditions are still being experienced but predicted showers for the last weeks in August may initiate the barber’s pole cycle and a build-up in numbers if follow-up rains fall in the next month.

Western Australia
>> full report

Worm egg counts have been generally low although some mobs did require drenching. After weaning is an ideal time to conduct a Drench Resistance Test. 

>> full report

After the coldest winter in many years, conditions are very dry and there is concern about sufficient subsoil moisture to sustain a reasonable spring.  Lambing is in full swing and worm egg counts have, on the whole, remained low, although many merino flocks were nutritionally stressed and were drenched.  

South Australia
>> full report

Winter was relatively cold with just sufficient rain to encourage pasture and crop growth. Lamb marking levels were above average with flocks reporting 120–140% reflecting good weather through the May–July lambing period.