Does it grow on its own? Is this a magical world you live in?
Sounds like some story out of that bible you love to hate so much. I always knew you were a fairy lover.

Actually, yes, it does grow on its own. In fact, you could grow an infinite amount of meat without ever having to introduce any new cells from an organism.
50,000 tons of meat grown in vitro can easily be stored in a small corner of a warehouse.
50,000 tons of meat grown conventionally with animals is going to require a shit ton of space, time and resources to feed the hogs. One 250 lb hog will only yield around 144 lbs of retail cuts and you are looking at around 300-700 dollars to feed just one hog until slaughter.
Do the math dip shit.