nice_mob_variants:livestock_breeder
A hay-filled feeding trough that takes the work out of animal husbandry. Every few minutes it puts the farm animals around it into love mode, so they breed on their own without having to be fed by hand.
Place the Livestock Breeder like any other block. Roughly every 10 minutes, as long as a player is within 64 blocks, it activates:
This works for all mob variants of these animals, so a Livestock Breeder is an easy way to multiply rare variants you have penned in.
The breeder's timer keeps counting while no player is nearby; once the 10 minutes have passed, it activates as soon as a player comes within 64 blocks.
The Livestock Breeder can be broken with any tool or by hand, though a pickaxe is fastest. It always drops itself.
The recipe is unlocked as soon as you have a Barrel in your inventory. Crafting it grants the advancement Ranch Hand, and crafting both the Livestock Breeder and the Frog Feeder grants Homestead.
To get this block using commands, the following loot table can be used: /loot give @s loot nice_mob_variants:block/livestock_breeder