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Victoria worms, flies and lice update - May 2021

VIC WormBoss Worm Control Programs

VIC WormBoss Drench Decision Guides

Sheep

Goats

Sheep

Goats

Hamilton: Andrew Whale, Livestock Logic (a.whale@livestocklogic.com.au) and Lexie Leonard, Livestock Logic (l.leonard@livestocklogic.com.au)

 

  • Considering lambing ewe risk when choosing paddocks for lambing over winter.
  • Assess pasture risk as well as stock risk when making drenching decisions.  
  • Following a later autumn break this year, May and June lambing properties should anticipate a less winter feed than normal.   

With a later autumn break than usual across most of the Hamilton region, many properties may expect to start lambing (or are already lambing) on less-than-ideal pasture lengths. While this will have a main impact on ewe nutrition and lamb survival, it will also increase worm stress on these ewes. The drier autumn has meant mainly low worm issues over the past month, but with this rain we expect them to start increasing from mid-June. Areas south of Hamilton that have enjoyed decent rain over autumn will have average-above average worm risk this year. As always, if you feel your worm control hasn’t been up to scratch now is a good time to start thinking about winter and spring drenching plans, especially for lambing ewes and young stock.

Hoggets, weaner cattle and light lambing ewes are at most risk of worm burdens, and it is important to keep this in mind when selecting lamb paddocks that may not have had a good larval kill over summer, which may be a lot of paddocks! 

Looking forward, continuing to use Worm egg counts results for drenching decisions is prudent and not just drenching based on the time of the year. 

For May 2021 state outlooks, please follow the links below:
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