where do new (sheep) drenches fit? WormMail.201009281600. To: WormMail list (recip. undisclosed)
Media release: ‘New drench targets worms’http://www.dpi.nsw.gov.au/aboutus/news/recent-news/agriculture-news-releases/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. http://www.dpi.nsw.gov.au/aboutus/news/agriculture-today/september-2010 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. "
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. Extras Below is a mixed bag of extras, some of which may be of interest: OJD Prevalence Areas from 1 January 2011 http://www.dpi.nsw.gov.au/agriculture/livestock/health/specific/sheep/ojd/about/ojd-prevalence-areas-jan2011 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
http://ca.news.yahoo.com/s/capress/100908/national/world_cda_generosity_ranking (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). Spinster? 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_media-release.pdf 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
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.
these beasts. Apparently mummified versions of these larvae were regarded
as a food delicacy by Maori in NZ." Cheers Paul Mason Consultant Parasitologist, Christchurch, New Zealand.
TO: WormMail list (recip. undisclosed). WormMail 201009031200Sheep 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
* 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
08 September 2010 http://www.sheepconnectnsw.com.au/event.html?eventId=26 Admittedly there is nothing on worms in this update, but the program looks interesting nonetheless (and there is a segment on ectoparasites at least). 🙂 Sheepworm Zones – NSW The map has been updated. http://www.dpi.nsw.gov.au/agriculture/livestock/sheep/health/worm-control-regions Regards SL