What do you do to prevent inbreeding?

I have quite a lot of horses and it's been getting a bit overwhelming trying to keep track of who's who and I'm extremely cautious about it.

I just wanted to know if anyone had a particular system they use to help keep things a bit more organized?

if I'm creating my own lines, I plan out every generation in advance. I might change who the foals are paired up with because of color or confirmation, but otherwise everything is tracked very nicely in an excel spreadsheet.

If the horses were bred by other players and have extensive pedigrees, I use the notes page to list the horses in the pedigree and use CNTRL-F on pairs I want to breed to be sure they don't share any/too many :)

Same as Kahzie, I'm tracking everything on excel and have preplanned everything. I'm working mostly with foundations of my own line, so I've got about 4 gens figured out *barring anything weird happening*.

My own lines I preplan. If I know I'm going to breed the horses more then once I've taken to locking the first set until the second set is born and numbering them (I number my pairs so 001 pair will have foal 001 and 001-2) . Then I pick which one of the pair I want (stats/confo/color or whatnot) and move them into a division, while the other is put up for sale to other breeders. I continue the process with each generation under that.

If I'm buying lines from other breeders (as I keep my foundation group and my regular groups separate) I try to make sure that they don't share any ancestors to start, make notes on them if they do - ex. don't breed this horse with HORSE NAME. I sell off duplicates of foals from my own breedings (pairings that have 2 or 3 foals) or if I want to keep the foal because I don't want to risk someone else breeding the line too extensively, I simply put it in my stud/broodmare division as a mental reminder that I don't want to breed it back into my lines for whatever reason.

Back when I was having trouble keeping track, I would put each stud's initials in front of the name of the foal and then their actual name was separated by a period. So, I might have a colt named RG.Firefall. Raining Gold being the stud's name, Firefall being the colt's name.

I only breed in pairs, so if you have more than one stud to a mare or more than one mare to a stud, then you'll still need to be careful, but that was what worked for me.

Thanks guys! I need to invest some time in charting some stuff out it seems. My current system is way too wishy washy