I used lucerne chopped hay for a brief period when I boarded at a facility that offered really lousy hay and fed very small amounts of it. I hated seeing my horses standing begging for hay in their stalls, but we boarders weren’t allowed to touch the barn’s hay to feed it liberally.
I had a tim mix, came in 40# bags. It was a low NSC blend. I forget the name, it was something “gold”, it was about $16 a bale. This was a year and a half ago.
It was non molasses, but sprayed with soy oil. It was not oily or sticky in any way but very silky feeling… not dry and crispy like dried hay at all… visually it had a soft luster to it too, almost metallic, it was odd. It was amazingly dry for being kept in a plastic bag, I always worried about moisture but never found any. It was always consistent and smelled ok, not fresh, but never sour or off either. It wasn’t appealing looking, it looked like something you’d stuff a mattress with frankly.
My horses REALLY liked it, but I was unimpressed from a utility standpoint. Mine was compacted, but not solid, it was like handling handfuls of dried chopped hay. 1-2" pieces. About 15% finer material, but mostly the pieces.
I couldn’t feed it loose in the stall because it would just blend in with the shavings of course. If I put it in the manger, the horses would bury their noses into it and flip it around and it would end up on the floor in the shavings. I never did buy a haybag, but it would have to be one of the solid ones with the small chew hole because the stuff is so fine. I tried feeding some outdoors when they were in large dry paddocks all day but it would quickly just blow away in the wind.
Again, to my surprise, the horses really liked it. It was good quality and convenient to have a bag of hay around, but at $16 a bale it was beyond silly expensive and I never found a way of feeding it that didn’t result in a ton of waste.
Also, the horses would bolt it because it was so easy to stuff into their faces, and I frequently worried about choke.
hope this is helpful