Guys it's about poultry first you must be passionate about birds As u watch them I treat them like flowers which acts like therapy to human life. Upbringing is all that determines your yields. In their early days birds are fragile so needs extreme caution and care. About structure it should be well ventilated for air circulation and overheating. Finally the more the birds the more the yields and the lesser the production cost. For more info am open or dm I am there for you