Chickens: how can I make mychickens to grow fasterand heavie?

[Henlus]

Hello everyone!   Please I  want  to know how many  bags of feeds are  100  broilers suppose to  finish in  6wks  at  most  8wks  and  what should be their expected weights?   Any  tips on  healthy and  fast growing of  the  chickens  is  welcome. I  heard that  there's a  special injection that makes them   grow faster and  heavier, is  it  true?

I currently have 600 broilers and by day 24, they have eaten 21 bags. Broilers need about 2kg of feed to gain 1kg in weight. They attain 2kg in 6-7 weeks. I hope this helped.