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worm-outlook

Worm outlook

Worm outlook

April Work Outlook: Livestock

Since the last report there hasn’t been much of a change in worm outlook for the South West.

South of Hamilton, persistence of green pick and small rain showers will keep worms cycling in the pasture.

North of Hamilton has been marginally drier, and there have been areas that have managed to get an effective second summer drench. For most areas however, drenching from clinical signs and WEC results is the most effective way to keep pasture burdens low.

It is important not to stop monitoring WEC’s, especially for young sheep as there will still be spiking of wormburdens post rain throughout autumn.

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Preparation to keep in mind over the next 3 months:

  • Lambing paddocks for late autumn/winter will be even more critical this year as we generally anticipate poorer worm control over summer and autumn.
  • Pre-lamb drenching timing and drench choice will be critical and needs to be matched to mob and paddock risk level
  • Winter paddocks for last year’s lambs need to be planned ahead to minimize risk of winter dysentery and parasite burdens

Barbers pole worms are still popping up around the district in isolated cases. If you have sheep on green pick following rain keep a close eye for clinical signs of barbers pole – bottle jaw and weak sheep are the most common signs, followed by sudden death. Scours does not occur with barber pole infections so is not a reliable sign of a barber pole worm burden.

Flies have been mostly kept in check with cooler temperatures, and we don’t anticipate another fly wave with lower temperatures expect for the next few weeks, but isolated cases are to be expected. As usual, lambs and weaners are the most susceptible so it may be worth considering a fly prevention if previous doses have worn off.

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