What should I now feed him on?

 If he is prone to being a good do-er feed plenty of fibre but still monitor his weight and give him Lami Low-Cal. You’ll be able to feed the recommended amount of Lami Low-Cal to ensure a balanced diet and healthy horse without encouraging weight gain.  We would always recommend Lami Low-Cal for any overweight horse – regardless of their individual circumstances, even broodmares in foal.  If he is the type that will stress weight off or lose a lot of muscle then give him Prime Original, or if he is an ‘oldie’ – Platinum Pro.