where do new (sheep) drenches fit?

where do new (sheep) drenches fit?     WormMail.201009281600.   To: WormMail list (recip. undisclosed)


Webinar: ‘Zolvix ? a new sheep drench – how can we get the best from it.’

Webinar: ‘Zolvix – a new sheep drench – how can we get the best from it.’    WormMail.201009281100

This is passed on with permission for the information of those on the WormMail mailing list (plus the QAAH-L list etc).

Noel O’Dempsey (Queensland) has organised this webinar which is being supported by Novartis.

Speakers: Justin Bailey (Novartis) and Maxine Lyndal-Murphy (parasitologist, DEEDI, Qld)

Date/time: Thursday 7 October at 1pm    (Note that this is Queensland time; NSW moves to day light saving time next weekend (Qld remains in the dark, with non-fading curtains etc))

You must register: Mandy Smith 07 46881522 mandy.smith@deedi.qld.gov.au or to Noel O’Dempsey at odempsn@harboursat.com.au

(Please do not ask me for information: you now know as much as I do about the webinar- SL)

" Webinar title: ‘Zolvix – a new sheep drench – how can we get the best from it.’  Zolvix is the first new sheep drench for some years and will be of use to all Queensland sheep producers but of particular use to producers with resistance to the current drenches on their properties. Issues to include: How can we get the best from Zolvix and slow the development of resistance? Producers should find out what are the advantages and limitations of Zolvix and where we all may be able to work together to best make it happen.

Cheers Noel "



WormFax NSW – August 2010 etc

WormMail 2010-09-27-1430    TO: WormMail mailing list (recip. undisclosed)

In this issue:  WormFax August; Media release: ‘New drench targets worms’;  WormBoss Story – Greg and Kathie Tighe;  Lamb deaths and metabolic diseases in ewes;  New DNA tests when buying a bull, Kangaroos are Cool etc

WormFax NSW – August 2010

The Aug 2010 edition is on-line.



Media release: ‘New drench targets worms’


WormBoss Story – Greg and Kathie Tighe, New England region, NSW (Beyond the Bale, September 2010)

Lamb deaths and metabolic diseases in ewes – Tony Morton and Sally Martin in The Land

There have been increased reports of metabolic and other conditions in lambs and ewes around the state with current seasonal conditions.  Attached is an article from The Land newspaper (9 September 2010) with interesting comments from Tony Morton (Wagga Wagga) and Sally Martin (Young, NSW).

Needless to say, conditions are also excellent for internal parasites.

New DNA tests when buying a bull

Here is an excellent article by Dr Laurie Denholm in Agriculture Today.


Kangaroos are cool   (Absence of digestive methane release)

According to the wikipedia article on kangaroos:

"Absence of digestive methane release

Despite having a herbivorous diet similar to ruminants such as cattle which release large quantities of methane through exhaling and eructation, kangaroos release virtually none. The hydrogen by-product of fermentation is instead converted into acetate, which is then used to provide further energy. Scientists are interested in the possibility of transferring the bacteria responsible from kangaroos to cattle, since the greenhouse gas effect of methane is 23 times greater than that of carbon dioxide, per molecule. "




WormBoss and Watt on how to use new drenches; plus ‘extras’

TO: WormMail list (recip. undisclosed).    WormMail.201009101300

As most would know, ZOLVIX (monepantel, Novartis) was released in Australia recently.

How should Zolvix be used?  See below.

WormBoss article

Here is a link to an article from the WormBoss team:    http://images.wool.com/pub/Wormboss_StephenLove_DrenchUpdate_Sept2010.pdf

Bruce Watt’s article

Pasted below is an article written by Bruce Watt (Central Tablelands LHPA) for the local media (Bathurst region):


The long awaited launch of our first new class of drench in over twenty years took place in Sydney last week. The new chemical, monepantel (brand name ZOLVIX) is currently being promoted at a series of meetings across the sheep producing areas of Australia.

An advantage of monepantel is that it is both highly effective and highly selective. Across a range of trials, monepantel killed 99.9% of worms including our most dangerous types, such as black scour worm, small brown stomach worm and barbers pole worm. It only kills nematode parasites so is safe against all other organisms including aquatic animals, dung beetles and people.

At over $1.00 per adult dose, sheep producers in the tablelands with several effective drench options may not rush ZOLVIX. While the withholding period is 14 days, the export slaughter interval is currently 115 days, which may limit its use. However, the new chemical will definitely have a place in our drenching programs.

Novartis, the company behind monepantel, employs or contracts some highly regarded veterinary parasitologists who have considered how we might use this new chemical.

One suggestion, applicable on the tablelands, will be to use monepantel for lambs at weaning. I think this will make sense for many sheep producers. We require a highly effective drench here because our young sheep have poor immunity to worms and cannot handle a setback.

In addition, if you have used moxidectin as a pre-lambing drench the worms surviving on the pastures as this drench reaches the end of its protective period may be those with some resistance.

Lambs at foot are therefore likely to pick up these resistant worms and help multiply them. A highly effective drench of a new class will kill off these emerging resistant worms, helping to prolong the lifespan of moxidectin and our other drenches.

The other reason that you might use ZOLVIX at weaning is because the smaller lamb dose will be more affordable.

Some producers will find ZOLVIX to be useful as the first summer drench. Those who aim to rotate away from the mectins at the first summer drench can choose either the three way combinations or the organo-phosphate combinations. Monepantel now gives farmers a third choice.

Finally, monepantel will be valuable as a quarantine drench when you bring new sheep onto your property. Remember that you can rapidly acquire drench resistance if you import it from elsewhere. Quarantine drenches aim to kill all the worms in purchased sheep. Previously our options have included three or four way combinations. Monepantel will be a convenient alternative.

If you purchase sheep we recommend that you hold them in the yards for 24 hours to enable them to pass the eggs of the introduced worms. Then run your new sheep in a paddock with a good selection of your own worms. If by chance any highly resistant worms survive, they will face plenty of competition from your own worms.

Finally, Novartis has taken a fresh look at how we drench sheep. The company has designed a completely new drench gun and a new backpack. Instead of struggling with an ill-fitting plastic container with thin black straps, you can try the new backpack designed to fit comfortably like a skier’s daypack. I am not sure that you will ever enjoy drenching sheep but these innovations may make it more comfortable.

Senior District Veterinarian
Bruce Watt BVSc, MS, MACVSc
8th September 2010



Veterinarian/State Coordinator-Internal Parasites,
Industry and investment NSW.


Below is a mixed bag of extras, some of which may be of interest:

OJD Prevalence Areas from 1 January 2011


On 1 January 2011 there will be changes to Ovine Johne’s disease Prevalence Areas in Western Australia, Victoria and some regions of NSW.

The changes are the consequence of an increasing prevalence of OJD over the past two years in some regions, which has pushed these areas above their allocated prevalence area cut-off under the OJD Management Plan 2007–2012.

Generosity rankings – Australia and NZ tie for first, Canada a creditable third

(But look at other rankings ( eg  http://en.wikipedia.org/wiki/List_of_most_charitable_countries )  and we don’t look so good (even in relative vs absolute terms).


Why are spinsters called spinsters?    http://wordsmith.org/words/spinster.html

What is the most diagnosed cancer in Australia?: http://tinyurl.com.au/rxt

Best Practice Manual for Guard Dogs


http://www.invasiveanimals.com/wp-content/uploads/2010/09/Guardian-Dogs-web.pdf    (5.4 mb)

Australian Federal Election – news report Taiwanese-style:    

The Stig finally unmasked  http://www.abc.net.au/news/stories/2010/09/01/3000099.htm

Alpaca parasite??

I & I NSW District Agronomist Tac Campbell (Grafton NSW) sent me this image (pasted/attached) from an alpaca producer.

 The owner wanted to know what was "the worm-type thing I found swimming in my alpaca-manure-tea bucket".

(Photo by Penny Mahoney)

What is this thing?

Here are two expert answers, which both agree:

" Looks like a rat-tail maggot to me

http://en.wikipedia.org/wiki/Rat-tailed_maggot   "

Jill Lyon

Senior Laboratory Officer, Parasitology, Animal Health Laboratories, Dept Agriculture and Food, , Albany.  WA   6330

"The  photo is of a so-called rat tailed maggot.  They are the larval
stage of a nectar eating hover fly.  The larvae live in rotting material
(commonly found around the yards at meat works).  The "tail" is a breathing
tube that allows the larva to drawn in air while buried in the anoxic gunge
below.  The larvae are not parasitic, they are one of the good guys in the
break down of waste material.

When I worked in the veterinary diagnostic lab we often got enquiries about
these beasts.  Apparently mummified versions of these larvae were regarded
as a food delicacy by Maori in NZ."


Paul Mason

Consultant Parasitologist, Christchurch, New Zealand.

Sheep Connect Industry Update-CANCELLED | Spring treatment for liver fluke | Resistance in liver fluke

TO: WormMail list (recip. undisclosed).  WormMail 201009031200

Sheep Connect Industry Update-CANCELLED

Disappointingly, the Sheep Connect Industry Update scheduled for Armidale (CSIRO Liaison Centre) next Wednesday 8th has been cancelled.

This was due to insufficient numbers, especially given the unfortunate fact that commonly these days a proportion of those who RSVP and indicate they are coming do not turn up on the day. (Frankly I think this is pretty poor).

Spring treatment for liver fluke

Fluke guru Dr Joe Boray has reminded me to remind you all  …..  

"…do not forget the preventive treatment of sheep and young cattle before the spring rain will multiply the number of snails waiting for the miracidia from fluke eggs from the flukes that survived the winter"

Resistance in liver fluke

See Turning the Worm Issue 19- December 2005 for a short discussion (and references) by Joe Boray on this subject.



Veterinarian , State Coordinator-Internal Parasites
Industry & Investment NSW – Primary Industries
Armidale NSW 2351

W: http://www.dpi.nsw.gov.au/agriculture/livestock/sheep/health#Internal-parasites

W: http://www.wool.com/WormBoss

W: https://wormmailinthecloud.wordpress.com  |  http://wormmailinthecloud.posterous.com

* Anonymous on-line employee survey:   http://www.dilbert.com/strips/2010-09-01/

* Our cousins across the Tasman do a lot of good work on internal parasites of livestock.

But there is a language barrier.

This might help (see attached PDF)

(With thanks to Kiwi colleague, Jo W).

* Interesting if controversial paper:

 Melnik BC (2009). Permanent impairment of insulin resistance from pregnancy to adulthood: The primary basic risk factor of chronic Western diseases. Medical hypotheses 73(5):670-81, 2009 Nov

Sheep Connect NSW Industry Update, Armidale NSW 08 September 2010; Sheep Worm Zones Map NSW – updated

TO: WormMail list (recip. undisclosed)    WormMail 201009021400

Sheep Connect NSW Industry Update, Armidale NSW
08 September 2010


Admittedly there is nothing on worms in this update, but the program looks interesting nonetheless (and there is a segment on ectoparasites at least).  đŸ™‚

Sheepworm Zones – NSW

The map has been updated.