A page per goat, starting with ancestry
A herd book earns its name when every goat's page opens with the facts that never change: her name and herd or ear-tag number, her breed, when and where she was born, and her ancestry — sire and dam at minimum, grandparents where you have them. Mark how that parentage is known: registration papers, the breeder's records, or your own book from a homebred kid. Add a plain description of markings and any tattoo or tag details, because goats of the same breed and line can look remarkably alike at a hurried glance across a pen, and a kidding record attached to the wrong doe quietly corrupts the recorded ancestry of everything bred from her afterwards.
Breeding and kidding records, kept at the time
The working heart of the herd book is the breeding record. For each mating, note the buck used, the dates the doe was served or ran with him, and the kidding window that follows. At kidding, record the day, how many kids arrived, their sexes, birth weights if you take them, any assistance given, and how the doe mothered — milk supply, attentiveness, any rejection or fostering. Note kids that died, honestly and with the likely cause. These entries take five minutes written fresh and are nearly impossible to reconstruct accurately a month later from memory, which is exactly why herd books kept 'when there is time' drift into fiction.
Production and health notes that complete the picture
A doe's page should also carry what she produces and what she costs: a running note of milk yield for dairy goats, how her kids grew to weaning, her condition at mating and at kidding, worming and worm-count results, hoof care, illnesses and anything the vet advised, and her vaccination status. Across a few seasons this layer answers the commercial questions: which does kid easily and rear twins without help, which family lines stay sound on your ground, which doe's daughters are worth retaining, and which buck's offspring grow fast or fall apart. Weaning weights in particular reward the effort, because they turn arguments about a buck's merit into arithmetic. Record seasons that ended empty without embarrassment; a doe that repeatedly fails to hold is information, not a disgrace, and the book is where that pattern becomes visible. Culling and buying decisions made from these pages are noticeably better than decisions made from the yard rail at the end of a long day.
Selling, lending and moving goats on
Goats change hands — sold as breeding stock, lent out, moved to a new keeper when herds shrink. Each movement goes in the book with the animal's destination and which records went with her, because her ancestry and kidding history are a large part of what a buyer is paying for, and the doe arriving with a full record is the doe whose next kidding can be planned from day one. A herd book maintained this way stops being a private notebook and becomes the herd's passport into its own future — KinsLe's Transferrable Profiles carry a goat's profile to her new owner with her history, records and routines intact, so her page continues instead of being rewritten from memory.