We all know that a good mare from a good family is the cornerstone of breeding success. But how, exactly, do you define a mother line/dam line?
How far back do you go? 4 generations? 16? As far back as the record shows? If you go back far enough, of course, you’ll hit the “Eve” of the species - but we obviously don’t consider all horses to be of the same mother line.
I have been pouring over pedigrees in my studbook of choice and trying to synthesize the information available. One thing that I’ve noticed is that some powerhouse producers seem to rise up out of “nothing”. Granddam and dam may have produced nothing of note, but suddenly, a mare (who may not be much of a performer herself) gives birth to gold no matter what stallion she is paired with. Many of her offspring go on to be fantastic producers, too.
Is this magical mare the “beginning” of a “new” stamm? How does she come to be - blind luck of fortunate genetic mutation, finding the perfect nick of a stallion? Does her prolific record as a producer reflect anything positive back to her seemingly mediocre tail female ancestors?