I would say you need to have your calf in 90 days before your big show/shows. One thing I always think of is that hair only lasts so long before they have to shed out. I am pretty sure that even if you had a calf in a cooler all winter through summer that after 5 or 6 months they would shed. I get asked by my customers every year right now if their calf will keep their hair if they work hard and keep them cool. I tell them no, they will not keep their hair and you have to grow new stuff.