Farm - 01-02-2024 - Ellie Body BVSc MRCVS - 0 comments
Parasite Control - Why it is important to have a plan


Why is it important to have a plan?

Drops in growth rates (and yields in adult cattle)

  • Up to 30% reduction in daily live weight gain, even with a low level worm challenge and in dairy cattle can cause up to 1kg/day drop in daily milk yield

Wormer resistance

  • Reported 'clear wormer' (e.g. Ivermectin) resistance in cattle - this is the type of wormer found in pour on products

Developing immunity

  • The rule of thumb is that it takes approximately 8 months of grazing to develop immunity to gutworms - having good immunity as heifers is key to setting them up for success as an adult milker or suckler cow

Environmental Impact

  • 'Clear wormers' have been particularly shown to impact soil invertebrates, including dung beetles which can help with gutworm control, by breaking down and drying out faecal pats and they can also be a carrier for predatory mites which eat fly larvae. Not to mention the impact they can have on soil health, water infiltration & the wider ecosystem
  • White wormers can also be harmful to aquatic life.

Find out more in the link above and also new of our upcoming meetings.




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