It's not even a shot... it's a spray that is put on the birds and when the birds peck at each other or preen themselves they ingest the so called vaccine. I don't recomend it either... it's best to let them develop an immunity to it. Broilers do very well with cocci on pasture because they are not in contact with the feces for very long so an outbreak isn't common... which makes it a waste of time and money.
Jeff
Jeff
