jesseys has written pretty much my mind.
oil contains 2.25 times the energy amount found in normal compound feeds, but as it is released slowly it is more likely to condition and provide sparkle without fizz.
you
must feed a high fibre diet; if your horse is in light to moderate work then he should be receiving at least 70-80% good quality forage (soaked/steamed hay preferably, or haylage).
as all mixes tend to contain a lareger amount of starch, sugar and less fibre when compared to a cube, i recommend that you either feed a high-fibre, low-starch and low-energy cube (such as Spillers High Fibre Cubes) or, even better, one of the Dengie Fibre feeds: such as Alfa-Lite (for horses in moderate-medium work who need a low-sugar diet, such as laminatics, fizzy horses or good doers) or Hi-Fi Lite (for similiar horses in rest or light work); however the feed you use and the amount of it depend on the individual horse, so i strongly sugest that you contact Dengie by email/phone (see the website) for more specific, professional advice (they are very helpful!).
these Dengie feeds are contain slow-release energy and high amounts of fibre (generally several times more than the average 'high-fibre' mix or cube) and valuable protein and calcium too, in particular.
for more enrgy/condition you can add some oil each day; three of the best including Soya, Corn and Linseed (Flax).
you will need to feed about 2-2.5kg of a high-fibre cube each day to supply your horse with a balanced diet, or if you feed less (check the bag) or use oneof the Dengie Fibre feeds then you'll need to add either a feed balancer or vitamin and mineral supplement. high quality examples of feed balancers are Blue Chip Original/Lami-Light and Baileys Lo-Cal, and vit & min supplements; NAF Pink Powder, and Global herbs Globalvite. all alongside plenty of (preferably
ad-lib) forage of course!
good luck, and if you're still in a muddle then please feel free to PM me! i also ride and have cared for fizzy types like yours; he sound lovely!