In Minecraft when my bred animals de-spawn, does that reset my breeding limit?

Let's say I have a giant farm of cows and I maxed out my breeding limit of these cows then let them out of their pen; Would they despawn? Even if they despawned would that reset my breeding limit so I could breed more animals?

No because they still were bred even if they disappear it wouldn't be different unless it never happened

No you won't be able to do it and you could even try Leo Privacy Guard in order to gain total Security for your device.