Ecobreeder

Supported animals spawn with a random gender. Adult males can be castrated by right-clicking them with shears, and a castrated animal cannot breed, though breeding food still heals it. Breeding tags make uncastrated males search for a suitable female on their own, so a ranch needs less manual pairing. Animals that breed normally are unaffected by the gender system and produce offspring in the usual way. Tamed offspring inherit their owner, and horses and donkeys that breed produce mules.

Ecobreeder scans vanilla and modded animals and applies food-based breeding to those it finds. Through the configuration, a server operator can enable or disable specific animals by entering their entity IDs manually. Litters can come out as twins roughly 9% of the time, and triplets show up in about 1% of births. Chickens take part in the gender system but cannot be castrated with shears. Saved changes take effect after the world is re-entered or the server restarted. An optional setting lets operators allow shears on other players in PvP, and a player can be sheared only once per life.

Ecobreeder is for ranch builds, survival worlds and multiplayer servers that want livestock management with more depth than vanilla breeding. It needs Forge, runs on the 1.20.1 – 1.20.4 range, and is published under All rights reserved, so it is not open source. Optional Jade integration shows gender, castration and mate-seeking information on hovered animals.