Pigs would have been expected to forage in the forests, for “mast” - acorns from oaks and other trees - and anything else a pig might eat. Oak trees tend to produce a small amount of acorns in most years, and much more in a “mast year” https://en.wikipedia.org/wiki/Mast_(botany) .

Before refrigeration, meat animals might be kept alive as long as there was stored fodder to feed them, or slaughtered when the weather turned colder, or slaughtered when time and other tasks allowed for preserving meat by salting or sausage-making.

So, think of this as an end-of-harvest status report on when the crown court can expect to start getting sides of bacon delivered, and how many of them.