there are 2 dosage of implant 4.7 and one with more. If he is fully grown vet says higher dosage is recommended. My 2 silkie roos are best buddies and only a few months old so they havent developed rooster habits like crowing yet, so we did the lesser dosage.
I have 2 silkie roos at about 6 weeks old that just got the 4.7 implant. Cost me 591$ for both. Neither has crowed yet or grown spurs or facial features of rooster. I will keep you updated it's going to be 1 week on Monday the 17th. That's when the bet said it will be kicking in. Will reply here...