you only feed them one raw egg a week and yes I thought it was weird too.... I once found my gelding stuck in our chicken shed... I had to go in and direct him out :) I have our horses on a strictly low energy diet onsisting of Copra, Gumnuts, Calmperformer, Ricebran and lucerne hay. They don't get any of those supplement stuff so that's why I was thinking of putting them on linseed, but I have been feeding the occasional carrot until I get some. The reason for the calcium stuff was because the gelding gets an occasional swelling of one of his back legs, only slight swelling, and we think it might be a joint problem or arthritis.