Instead of removing newborn animals when the husbandry is full, this patch modifies the placeables in animal husbandry so they may be sold.
Let's say, for instance, that your cowshed can accommodate 20 cows and currently has 18 cows.
Two calves will be added to the shed and two calves will be sold if four of those cows are ready to procreate.

Thanks to RichOPick