Ok, well the dosage is usually between 10mg and 50mg per kg of weight, depending on the percentage solution of the Panacur liquid, and it should be repeated 7 to 10 days later.
I dose my chickens (according to my vets instructions) with Panacur oral solution. The dosage is 10mg per kg body weight in chicken. You can either administer it directly via a syringe, or put it into their drinking water. If you're putting it in their drinking water, you need concentrations of 0.5 to 1ml Panacur oral solution per 1 litre of drinking water.