Currently, a player can breed a single animal (pig, cow, sheep, bee, horse, etc) every 5 minutes, with babies taking up to 20 minutes to grow. This may be too fast for some players, especially given that with enough animals (at least 600), a single player can continuously breed animals for as long as they have the breeding item.

Animal Farm Nerf

animal_breeding_cooldown: Adds to the breeding cooldown (in ticks) for an animal after it finishes breeding.
animal_growth_cooldown: Adds to the time required for a baby animal to grow.

Note that the above settings add (subject to change) to the breeding and growth cooldown. To get the actual time interval,

• Between breeding cycles: Add 6000 (5 minutes) to animal_breeding_cooldown.
• For an animal's growth cycle: Add 24000 (20 minutes) to animal_breeding_cooldown.

For example:

• 20-minute breeding and 1-hour growth (slow):
  • Set animal_breeding_cooldown to 24000 - 6000 = 18000.
  • Set animal_growth_cooldown to 72000 - 24000 = 48000.
• 60-minute breeding and 3-hour growth (very slow):
  • Set animal_breeding_cooldown to 72000 - 6000 = 66000.
  • Set animal_growth_cooldown to 216000 - 24000 = 192000.

This falls out of the scope of this mod, which is meant to stop automated mob farms, not normal ones. I might add a feature against villager-based crop farms, which would make it harder to breed so many animals, but that has low priority.

It seems that ServerCore has an option to block animal and villager breeding if there are too many entities of the same type nearby.