I have 4 horses, 2 in which I have had for 10 years, 1 I got 2 years ago and 1 I got last winter. The 2 that I had had for 10 years have been easy keepers, the one I got 2 years ago is at the point of obesity and the one I recently got is skinny, skinny... Which is my point, I have had horses for 30 years, I am at a complete loss... Brought this little filly home and all my horses are thin and sickly... I have tried everything... They have had round bales, alfalfa hay, bermuda hay, beat pulp, rice bran, corn oil, pellets, sweet feed... they are all current on vaccines and I have wormed them all in 6 week rotation since March (ivermectin)... because the filly was infested, not to mention she has rain rot. My older horses (11 and 12) look pitiful, vet checks their teeth annually but hasn't floated... they have no problems. I have even got the molassas block (250#) as extra calories. Among the weightloss they have all had periodic loose stool, I thought that it may have been trees in the pasture so I cut all limbs anywhere that they could reach, does anyone have any suggestions!