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New South Wales worm update - January 2014

LOCAL LAND SERVICES DISTRICT REPORTS

Murray Local Land Services

Dan Salmon, Deniliquin (dan.salmon@lls.nsw.gov.au)

In the Murray region the parasite picture is as one would expect during a dry summer following a dryish spring.

There are not enough worm egg counts being done so there is probably a significant amount of recreational drenching onto cereal stubbles because the majority of what egg counts that have been done show low to very low levels.

There are enough egg counts in the moderate to high range  to indicate that there is a significant minority of sheep flocks that will benefit from anthelmintic treatment but not enough producers are in a position to know whether their sheep need to be treated or not.

Riverina LLS

Elizabeth Braddon, Young (Eliz.Braddon@lls.nsw.gov.org.au)

Worm burdens in the past month have been slow to build since December with the very hot and dry conditions.  Majority of counts coming in are in the low range and do not require any action.  There has been no reports of clinical worm burdens for quite a few months and now is certainly a good time to use the weather conditions to clean up those contaminated pastures.  It is very likely that most producers will NOT need to do a second summer drench so doing a worm test before considering this in the next month or so, should not only provide valuable information but hopefully save you the time and cost of a drench!

South East LLS

Bob Templeton, Braidwood (Bob.Templeton@lls.nsw.gov.au)

The Braidwood area is very hot and dry.  The dry seems to have halted the imminent march of Barbers Pole Worm last spring.  Worm egg counts are reasonably low with high Barbers Pole and Small Brown Stomach Worm in high percentage.

What happens next depends upon the weather.  A wet autumn will see the Barbers Pole Worms explode in numbers.  Also Black Scour Worms cannot be too far behind them.

The advice:  Do a Worm-test in late February and discuss the results.

Riverina Local Land Services

Tony Morton, Wagga Wagga (tony.morton@lls.nsw.gov.au)

We have monitored or done FECRT with NAPfix (napthalophos+albendazole+abamectin) on a couple of properties with ML resistant small brown stomach worms. It was 100% effective on both based on post drenching egg counts. Thus it will be a very handy drench on these and many other properties.

Like any drench containing Napthalophos it’s very important that the sheep’s head is not pulled way back as if it goes into the lungs it can kill. Careful stockmen aware of the risk don’t have an issue with this, but less experienced stockmen or those who have not been warned can have problems. As an example of both safe use and problems a farmer and his stockman who had been well briefed re NAPfix risks drenched 7,000 sheep without a single loss. Then another person who, was not briefed about the risks and how to avoid them, assisted the stockman drench 350 sheep pre lunch. After lunch 10 were dead and another 10 subsequently died. It was fortunate they stopped for lunch and saw what was happening as they were only half way through the mob of 700!

Recent monitoring to see if the second summer drench is needed or not for sheep that  got their first summer drench  in November and have since been  run  on  pasture  is generally  showing  they do need the second summer dren

South East LLS

Petrea Wait, Cooma (petrea.wait@lls.nsw.gov.au)

For the month of December we have had no worm tests run in the Cooma region, although the Bombala producers have been busy with eleven tests being run. This pretty well summarises the seasonal conditions between the two areas with Cooma very dry, negligible rainfall and the feed disappearing fast, while Bombala has had good rainfall and still has plenty of pasture. 

Average worm counts have varied from zero in some mobs up to 1472 eggs per gram in others, with individual counts up 4600 epg. Differentials are showing the Black Scour worm (Trichostrongylus) in the highest numbers, although I have had a number of producers reporting sheep showing symptoms of Barbers Pole Worms (Haemonchus) also.

Drench performance has also been variable, but in general the combination drenches appear to be giving the best results, while the mectins appear to be less effective.

Given the variable results I would recommend doing a worm test prior to drenching, as you may find there is no need to drench. If you have already drenched, then a 10-14 day drench test will tell you if the product you used has been effective.

Central West LLS

Evelyn Walker, LHPA DV, Dubbo (evelyn.walker@lls.nsw.gov.au)

There have been no reports of deaths due to worms this month. I have however had a number phone calls of lamb deaths due to poisonous plants especially after grazing Caltrop (Cat-head) and Bambatsi grass. So take care when grazing risky pastures.