WRML. WormfaxNSW March and April 2013 and more …

TO: WormMail list ( recip. undisclosed) WormFax, liver fluke drench, another liver fluke pic, WormBoss News, FWEC Course, District Vets Conference Proceedings, Ecology of Voltaren?, diesel.

The latest WormFax is online.

http://www.dpi.nsw.gov.au/aboutus/resources/periodicals/newsletters/wormfax

(Many thanks to the NSW DPI Web Team (Craig Bratby), the NSW DPI State Vet Lab (notably Kathy Cooper and colleagues), and Veterinary Health Research, Armidale).

Surprisingly there are still some WormTests with fairly high egg counts, despite very dry conditions over much of NSW.

In short: Don’t guess, WormTest. More info: http://www.wormboss.com.au/tests-tools.php

WormBoss News http://www.wormboss.com.au/news.php

The latest issue of W/B News has hit the net (and a multitude of inboxes).

If you have not yet subscribed, check out this latest issue of W/Boss News for expert, regionally relevant updates on what is happening worm-wise.

April/May liver fluke drench done?

A dry autumn is often the time you find clinical liver fluke disease (in addition to production losses). (Is ‘clinical disease’ a tautology?).

By way of one-upmanship, having seen Jim Meckiff’s liver fluke photo, Armidale-based Senior District Veterinarian offered this one. (Attached, with permission. Please respect ownership of this image).

(Thanks also to F Malan for his ‘nice’ pictures of livers).

More info:
http://www.wormboss.com.au/news/articles/worms-and-other-parasites/the-liver-fluke-situation.php
http://www.wormboss.com.au/worms/flukes/liver-fluke.php

FWEC Course Tamworth – June

See attached PDF.

Proceedings of District Veterinarian’s (NSW) Conferences

and other goodies….

can be found at: http://www.flockandherd.net.au/edition/conference_2013.html

Ecology of Voltaren?

What?!

Yes, in the wikipedia article on same, check out the section on ecological effects. Very interesting.

http://en.wikipedia.org/wiki/Diclofenac

Do you use diesel?

http://www.magireland.org/forms/DieselSpills.gif

Regards,

SL. Armidale. 20130527

 

FEC Flyer TAM JUNE 2013.pdf

WRML. 1 pictorial follow-up to yesterday’s post on liver fluke. 2 Unexpected positives for liver fluke.

WRML. pictorial follow-up to the recent post on liver fluke

The recent post: https://wormmailinthecloud.wordpress.com/2013/05/07/wrml-aprilmay-fluke-drench-and-feeding-sheep-and-other-livestock/

A nice pic

Photo source/owner: Jim Meckiff There are also nice pics in Dr Boray’s Primefact: http://www.dpi.nsw.gov.au/agriculture/livestock/sheep/health/liverfluke-disease-sheep-cattle

Last Friday Armidale Sheep and Wool Officer Jim Meckiff was at Tamworth abattoir to see lambs from a prime lamb competition.

260 lambs about 7 months old from ~ 25 properties were slaughtered. ~20 lambs out of the 260 had ‘flukey’ livers.

Jim was not in a position to ascertain from which or how many farms the ‘flukey’ lambs came.

Despite the low-res image, you can see adult fluke on the surface of the liver which have escaped from bile ducts after the liver has been sliced open post-mortem.

Some of the liver appears fibrosed (an attempt at healing) and the lobe to the right shows signs of necrotic tracts (dead tissue associated with immature migrating fluke). (nekros(Gk)=dead)

Quite possibly this liver contains fluke of varying ages: from immatures right through to adults.

If you are not sure whether or not you have liver fluke, now is a good time to test (despite the dry conditions).

Talk to your vet or other well-informed advisor about which test to use.

Most labs (e.g. DPI, VHR) offer a liver fluke egg count. (This uses a different technique from roundworm egg counting, because liver fluke eggs are relatively dense and do not float in saturated NaCl (salt) solution).

The NSW DPI lab, and possibly others offers a blood test which detects antibodies to liver fluke.

The lab at CSU Wagga also have a kit-based test from Europe that detects liver fluke antigen in faeces. (Virbac (Dr G Kelly et al) assisted in the validation of the test). You will need to ring CSU Wagga about this (or talk to your vet etc): unfortunately the CSU website website at this stage tells you very little about the test. http://www.csu.edu.au/vetservices/vdl

More information on fluke control (incl. drenches) in sheep (see also Boray of course!) : http://www.wormboss.com.au/programs/tas/appendices/liver-fluke-control.php

Information on tests: http://www.dpi.nsw.gov.au/agriculture/vetmanual/specimens-by-discipline/parasitology/fasciola

Don’t assume you don’t have or won’t get fluke (‘don’t guess, test’)

‘Some interesting information from Liz Braddon, Senior District Vet, Lachlan LHPA (based at Young).

The ELISA Liz refers to is an ELISA detecting antibodies to Fasciola hepatica. See: http://www.dpi.nsw.gov.au/agriculture/vetmanual/specimens-by-discipline/parasitology/fasciola

The ‘pools’ are blood samples that are pooled and tested at EMAI/the State Vet Lab (NSW DPI).

"We have actually had a positive (all >150 ELISA positive pools in 20 head) on a property that suffered flooding in the past two summers. Cows still looked pretty good but had a couple that were a bit ordinary. Producer had never had confirmed liver fluke in previous 20 years. I was bleeding for Q fever project and offered to do liver fluke to prove / disprove the theory … bit of a surprise. We are going to check a few others that have flooded as well to see if they have action as well. Eliz Braddon 9/4/13 (or 4/9/13 given that Liz is from North America 🙂 – Editor)

We have “checked a few others” with some interesting results:
* One property all pools >150 – Limousin cattle, mixed ages but good body condition and soft shiny coats – eg. no evidence of clinical disease!
* One had 1 pool 240, rest negative (<30) – mixed bunch but nothing out of the ordinary noticed when testing
* One all negative (<30) "

Nik’s comment was that she was surprised that with this level of infestation, there were no visible signs of production loss. Belinda threw out the possibility that older cattle can develop immunity to a certain extent which minimises losses but obviously act then as a reservoir for the disease!?- Eliz Braddon 9/5/13."

(Nik Cronin and Belinda Edmonstone are District Vets in the Lachlan LHPA (located at Forbes)

(Image source: http://www.lhpa.org.au/districts/lachlan )

Cattle, if not young cattle, tend to handle liver fluke better than small ruminants and alpacas. However, just as with roundworms, they can suffer significant if not obvious production losses (especially in high producing animals like lactating dairy cattle) in the absence of clinical disease. Clinical disease is the tip of the iceberg.

Regards,

SL

e&oe