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Whats the best way to utilize the prize animal barn to get the most collections
First, unless you have done so already, spend some time to go through your pasteure and optimize the animals you have in prized barn. There are several different aspects;
Leave 10-20 spaces open, so that animals that prize out can be added to the barn. When the barn is full, you just clear out some animals and keep going.
Every time you add a hungry prized animal to the barn, you can feed the whole barn with normal food.
You need to find a balance that works for you. Animals on a short timer (5-15 min chicken, 15 min goats, 15 min buffalos, 1 hour rabbits) are fed with normal feed often so they price out relatively fast, but take a lot of baby bottles. If you have many friends and know how the inbox work, that should not be a problem.
How can I myself prized animal barn ?
You have to buy the prized animal barn with lots of coin/gold and favors like other buildings. Upgrading is expensive too. There may be a level that it becomes available to you so check on that too. You need to do a search on the forum and READ EVERYTHING that people have posted. It has its good points and its bad points and you need to decide what works best for the way you play. Remember it is buggy like a lot of stuff in FV2 and you have to really understand how it works to make it pay off. I'm a lvl 204 and I still haven't decide if I want it.