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Tasmania worms, flies and lice update - September 2020

Tasmania WormBoss Worm Control Programs

Tasmania WormBoss Drench Decision Guides

Sheep

Goats

Sheep

Goats

Perth: Paul Nilon, Nilon Farm Health (pandonilon@bigpond.com)

This month, there have been few worm egg counts (WEC) worthy of comment. It’s important to let Merino weaners run a little: if you continue to suppress worms it makes it hard for the weaners’ immune system to kick in. As everybody has grass at the moment this is not risky. Therefore, let them go to 400–500 eggs per gram (epg) before drenching unless they are contaminating critical paddocks. Apart from that, sit back and enjoy the great season.

Feedback from last month's article on how to get correct tail length has been positive.  Punters have been divided as to whether to leave tails undocked or cut them flush with the pelvis. 

Concerns seem limited to shearers being militant about the longer tail length.  Well, as we move to the brave new world of unmulesed sheep tail length is critical, so both you and they need to get used to the notion.  Sorry, but that is the way it will be until the bare breech SNPs are discovered. Again, the recommendation is to dock the tail immediately at or below the third palpable joint or the tip of the vulva in ewes.

Ram sales are almost here. The larger scale, progressive breeders are including WEC information in their sale catalogues. If your ram supplier does not, suggest they do or look for another source. Remember, you need to select rams with lower than average (more negative) WECs for at least the maternal genetics.

Fluke: Chronically infected fluke properties may need a spring strategic fluke drench. There are not many properties that fit the bill, but after the discovery of a property with high levels of resistance to the important fluke drench triclabendazole, I urge any property that gave an autumn fluke drench get a fluke test done and give a spring drench if there are any fluke eggs present. 

For September 2020 state outlooks, please follow the links below:
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