Anything else I could try??

[Chestersmummy]

My 16.2ish 9 yo tb gelding has dropped so much weight so far this winter. He was on hay but have replaced that with haylege about a week ago. He also has a scoop of fast fibre (before soaking measure) and a scoop of top chop lite at night and 1/2 scoop of fast fibre and a scoop of top chop lite in a morning.
He can't have any cereals or mollases as they heat him up.

 

[Daytona]

Ditch the FF it's low calorie bulk feed for fattys, it will serve no purpose to your horse if needing weight on.

I struggled with my growning WB, tried so many difo feeds with no real results.

He now gets pure feeds pure condition 3 Stubbs scoop a day, micronised linseed and Equijewel rice bran 3 cups a day of each split between 3 feeds and he is blooming. 3 measures of brewers yeast and ablib haylage at night.

I've seen a massive difference in him.

 

[Daytona]

Should of added no cereals or molasses in any of the feed I mentioned my horse is getting.

 

[Auslander]

Another vote for Equi-jewel. Fab for condition without nuttiness! Might also be worth looking at Copra.

 

[LD&S]

Micronised linseed is good for weight gain, I realise you said no cereals but I've got a fella who gets fizzy really easily and he is no differant with Baileys No.1, I've used it in the past and found I didn't need much for it to make a differance to his weight.