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Anthelmintic Resistance
- present
Selection for drench resistance is
generally in proportion to the
amount of worm control achieved
using drenches
not a simple matter of the number
of drenches
more effective drenches probably
select more readily eg drenching
lactating ewes
Goats acknowledged to have more
anthelmintic resistance than sheep
even though no recent surveys
Cattle tracking about 10 years
behind sheep