She does get regular egg per gram fecals and honestly i am half guessing lol but shes always been a lil smaller than her sis. But not underweight dont get me wrong lol i feed my girls and they have 2 acres to eat on. Loose minerals. Hay all the time.80 lbs. seems very, very small for a 2 1/2 year old doe. I've got Nubians, and my smallest doe is still a bit over 100 lbs. I'm not familiar with Saanens, but I'd be tempted to wonder if there is some sort of an issue going on, such as internal parasites, not absorbing nutrition properly, or some kind of a mineral imbalance.