Blackhead help

[stinarose3]

Blackhead in 3 month old poult
Can’t remember if I should worm with Valbazen first before I administer API.

 

[R2elk]

Blackhead in 3 month old poult
Can’t remember if I should worm with Valbazen first before I administer API.

https://www.backyardchickens.com/threads/blackhead-histomoniasis-references.1404177/