Treating cattle for common parasites like worms, ticks, lice, and fleas can be easily done with just a few livestock supplies. I like to use pour on livestock supplies like Brute or Ivomec.
One of the ways I like to apply pour on livestock supplies to calves is to place the pour on in a spray bottle and then squirt it on the back of the calves as they nurse their milk bottles. I will start at the back of the neck and go down to their tails making sure the cattle supplies are even placed down the back of the calf.
I will first fill the spray bottle with water and then squirt the water into a 20 mL syringe to find out how much liquid comes out when the trigger is pulled.
The dosage amount of many pour on cattle supplies dewormers is 1 mL to 22 lb of body weight of a calf.
A 100 lb calf will need roughly 4.5 mL of cattle dewormer
A 130 lb calf will need roughly 6 mL of cattle dewormer
A 150 lb calf will need roughly 7 mL of cattle dewormer
A 170 lb calf will need roughly 8 mL of cattle dewormer
Most of the squeeze bottles that I have used have squirted 4 mL of pour on livestock supplies with each pull of the trigger.
With a little practice I can squeeze the bottle half way of 2 mL.of pour on livestock supplies,
A 100 lb calf will need 1 squeeze of cattle dewormer
A 130 lb calf will need 1 ½ squeezes of cattle dewormer
A 150 lb calf will need just about 2 squeezes of cattle dewormer
A 170 lb calf will need 2 full squeezes of cattle dewormer
Most of time a measuring cup will come with the livestock supplies of our choice and you can just pour it on the calf with that.
Most pour on cattle supplies will also treat roundworms and other internal parasites and external parasites like ticks, flies, flees, and lice, so you get both the outside and inside parasites at the same time.
So at what age can you deworm a calf? Most cattle pour on livestock supplies are labeled for both beef and dairy cattle of all ages.