A common mistake when
treating horses is under dosing so ascertain the weight of your
horse as accurately as you can either by using a weight tape or even
better a weigh bridge. Correct dosing is important, if you under
dose your horse the product will not work efficiently and could lead
to resistance.
If you administer a
sub therapeutic level of the drug and thereby expose the worms to
the drug, but perhaps not at a sufficient dosage to kill them. Worms
that survive treatment may pass on their “immunity” to subsequent
generations and those generations will become more adept at
surviving chemical treatments with the potential for resistance to
develop to that drug.
There are brands on
the market that now that treat up to 700kg in a single syringe and
now Equimax is available in tablet form
with each pack treating up to 800kg. These larger syringes and tubes
give that little bit extra to play with when dosing. When you
estimate the weight of your horse remember we all lie about our
weight so if in doubt, when estimating the weight err on the
generous side. Although a slight overdose of wormer is unlikely to
have harmful effects, as with all drugs, it is important to dose
accurately and in accordance with the manufacturer’s
recommendations.
Different chemicals
work in different ways within the body of the dosed horse so extra
thought needs to be given to such circumstances of age, general
health condition, administration to mares, foals and stallions and
also pasture management. There are many ways in which pasture
management such as poo picking and field use can help in reducing
the use of chemical wormers and so why not tell us about your
particular circumstances and let us tailor a plan specifically for
you.
For youngstock a critical time for
parasite control is the early months so take special care when
treating foals ensure you select an ingredient that is suitable for
use on foals and use that at the correct times.