There is another wormer that can be used, if you use it in separate waterers to ensure all your chickens drink enough of it to be effective. More importantly it will treat large roundworms such as the one in the photo as well as cecal and capillary worms.
You can purchase Prohibit (Levamisole) from Jefferslivestock.com or
Tractor Supply Co (
TSC.)
Dissolve one 52 gram packet (1.84oz) packet of cattle/sheep wormer in 3 quarts water to make a stock solution.
Add one ounce stock solution to one gallon of drinking water. Allow the birds to drink solution for one day, then remove it.
Again, it would be best to use several waterers, ensure the waters are plastic or galvanized metal without rust.
Put it out first thing in the morning before letting birds out of the coop. It must be their sole source of water to drink all day. Discard the treated water after they go to roost for the night and provide regular fresh water.
In severe cases, the treatment can be repeated every 5-7 days within a month.
For gapeworm, repeat every other day for one week.
Egg withdrawal period is 9 days.
If using Valbazen or Safeguard liquid goat wormer, giving it orally is best using a syringe without needle.
For large flocks; if they are different breeds, worm them by breed. Then you can finish up the other breeds the next day or the following day.
If they are all one breed, put a leg band on the ones you wormed, or worm them by coops if they have separate coops or mark their combs with a black magic marker. You have to think outside the box when worming large flocks. It's not as hard as you think really. Of course it helps to have someone hold the birds for you while you worm them, and it's quicker as well. I helped a friend worm just over 100 birds in one hour, it goes quick.
