manganese as in Magnesium? sorry im being a bit dim! he doesnt eat an awful lot of hay, is on good quality grazing all day then in at night with an offer of hay which is rarely touched and a small amount of Dengie hi fi lite with some Naff Magic in it, had to give him a super duper five day dose of wormer last week as he came from somewhere with no worming history and had a bout of colic yesterday I wondering whether the worms got stuck in their passage out which caused the colic and if he was that infested might have made him anemic in the first place? or course I could be completely wrong as ive only had him a month and havent owned a pony for 25 years

no sign of expelled worms in his droppings, am I clutching at straw?