WRML: update of WormMail on monepantel resistance

To WormMail list (recip. undisclosed)

I have updated this WormMail from 11 June: https://wormmailinthecloud.wordpress.com/2014/06/11/wrml-monepantel-zolvix-resistance-confirmed-in-goats-in-nsw-australia/

There were one or two mistakes.

One was that the owner did not find evidence of monepantel (MPL) when doing a post-quarantine DrenchCheck on imported goats, but during routine monitoring of home-bred goats in late autumn 2012.

In the first version I also did not indicate that the resistance to brown stomach worm involved two species of that worm (Tel. circumcincta and Tel. trifurcata). This might be of interest to just a few.

While it would be all too easy to blame goat producers in general – and this producer in particular – for this case of MPL resistance, note that this producer frequently did worm egg counts (WECs) to monitor worm burdens and also drench efficacy.

Here is an excerpt from the updated WormMail:

‘MPL, which is only registered for use in sheep, had been used on the farm shortly after the drench was available in Australia (spring, 2010). On the first occasion the drench was used at the sheep dose rate. Thereafter a higher rate was used when the farmer learnt more about the way goats metabolise drenches.

The owner resorted to MPL because of apparent control failures when using a variety of other drenches to control worm problems during a particularly wet year.

To his credit, this goat producer does frequent worm egg counts (WECs) to monitor worm burdens and to check the efficacy of drenches. Across Australia, probably less than 10% of sheep and goat producers do this. It was during routine monitoring in 2012 the producer discovered signs of reduced efficacy with MPL.” (Emphasis mine).

I also added some more comments at the bottom of the updated WormMail.

Regards,

SL

WRML. WormFax NSW-May, plus ‘other’

​To WormMail list (recipients (~ 400). undisclosed)

WormFaxNSW​-May issue

The latest issue of WormFax has been published to the NSWDPI website.

See: http://www.dpi.nsw.gov.au/aboutus/resources/periodicals/newsletters/wormfax for results, notes and maps.

Some of the higher average egg counts for WormTests around the traps (NSW):

Central North: weaners. 7320 eggs per gram of faeces (epg). No larval culture.

Armidale. Ewes. 3272 epg. 100% Haemonchus.

Northern New England. Hoggets. 4220 epg. 82% Haemonchus, 18% Trichostrongylus.

Central West. Ewes. 3760 epg. 100% Haemonchus.

Lachlan. Rams. 2404 epg. 100% Haemonchus.

(Parts of central and southern NSW have had an excellent autumn, unlike much of northern NSW which has had continuing dry conditions since winter last year, or longer).

Riverina. Weaners. 1592 epg. No culture.

South East. Weaners. 3240 epg. 100% Haemonchus.

Tablelands Local Land Services region. Rams. 6160 epg. 100% Haemonchus.

Goulburn. Weaners. 3600 epg. 96% Haemonchus.

Mudgee. Weaners. 4400 epg. 100% Haemonchus.

Hunter. Ewes. 7604 epg. 100% Haemonchus.

Moss Vale. Lambs. 5720 epg. 99% Haemonchus.

​Still very dry in parts​

Parts of northern NSW and Qld continue their protracted dry spell.

See: http://www.bom.gov.au/jsp/awap/rain/index.jsp?colour=colour&time=latest&step=0&map=drought&period=9month&area=ns

Drench??

​What an odd word, when meaning, in Australia at least, an anthelmintic (oral, and also topical or injectable), or the process of giving same to livestock, but not so much companion animals (cats, dogs) where the expressions​ ‘wormer’ (noun) and ‘worm’ (verb) tend to be used instead.

Otherwise drench means to ‘thoroughly wet’ (see excerpt from the Macquarie Dictionary below).

As to the unusual meaning of the word used in an animal husbandry context in some countries, the clue seems to come from older meanings of the word and to the word’s etymology:

drench

/drɛntʃ/ (say drench)

verb (t) 1. to wet thoroughly; steep; soak: garments drenched with rain; swords drenched in blood.

2. Archaic to cause to drink.

3. Veterinary Science to administer a draught of medicine to (an animal), especially by force: to drench a horse.

noun 4. the act of drenching.

5. something that drenches: a drench of rain.

6. a preparation for drenching or steeping.

7. Obsolete a large drink or draught.

8. a draught of medicine, especially one administered to an animal by force.

[Middle English drenche(n), Old English drencancausative of drincan drink] drencher, noun

Scroogled?​

We have just migrated our email to Google Apps, so, if you don’t get this, you will know why… 😉

Eyes on the road: http://youtu.be/JHixeIr_6BM ​​

Mosquitoes released in north Queensland to fight dengue

‘Researchers want to unleash a swarm of mosquitoes on the north Queensland city of Townsville with the goal of curbing the spread of dengue fever. Today, the researchers will hold a meeting with community leaders to try to get the city on board. Scientists want to introduce mosquitoes that are infected with the bacteria Wolbachia, which makes the insects resistant to dengue fever. The potentially fatal disease has no specific treatment and no vaccine. Small-scale trials in Cairns have shown Wolbachia prevents mosquitoes from transmitting dengue, and they eventually overrun the existing dengue-carrying population. Monash University Professor Scott O’Neill says he hopes the research will eventually lead to the elimination of dengue. “When you think how big the disease is, how big a p… ​’​

Read the full story: http://www.abc.net.au/news/2014-06-16/mosqitoes-to-invade-north-queensland-in-bid-to-eradicate-dengue/5525226

​Chewing the (saturated) fat – one view from NZ (NZMJ)​

http://scienceofhumanpotential.files.wordpress.com/2014/05/sat_fat.pdf

​Maggots as food

As discussed recently with an​ equally mad…er…lateral thinking… colleague:

http://www.bbc.com/future/story/20140603-are-maggots-the-future-of-food?ocid=global_future_rss

​Fructose ‘loves’ Homer

Infographic from David Gillespie:

http://davidgillespie.org/12-ways-fructose-destroys-your-body/

​Why Nikola Tesla was the greatest geek who ever lived – The Oatmeal​

http://theoatmeal.com/comics/tesla

 

Regards,

SL. 2014-06-23