Do you know your horse’s weight? Callum Blair MRCVS explains the importance of getting it right for worming.
Do you know your horse’s weight? Callum Blair MRCVS explains the importance of getting it right for worming. The dose of wormers is determined through extensive research to establish the optimal amount of drug to achieve the desired effect (kill parasites) while avoiding undesirable side effects. Accordingly, if the full recommended does is administered the level of efficacy can be predicted under normal circumstances. Without access to a weighbridge, it can be tempting to make an estimate fit in with the weight that one syringe will treat (or half a syringe if you have a pony). This is not universal across all products as syringes vary from sufficient to treat 575kg up to 700kg.