my 16.3 dwb x ish gets adlib haylage, mollichaff extra (was on alpha a oil but hated the sharp bits in it and used to chuck his bucket around the stable....) and D&H build up cubes two feeds a day.
2 x feeds a day, each has;
1.5 x scoops of HiFi
1 x double handful micronised linseed
Looks great on this and has an amazing shine to his coat.
He has never been a good doer but has blossomed since cutting his feed back and simplifying it.
As much haylage as she can eat - which is a seriously eyewateringly huge quantity, especially as she's not getting turnout on grass at the moment!
Then speedibeet, micronised linseed, pro-hoof, salt, and a handful of pure condition (running it down with the intention of stopping it completely). She'll probably need something more when her workload goes back up to normal.