I have only bed on straw by and large. Shavings only because that was what could be had and or allowed to be used for the brief time our horses were in that location.
I find shaving to be a PITA to muck properly and expensive to bed on. But I understand this is area specific. IMO and experience a lot of people seem to be obsessive with “clean” stalls. Granted there can be at times a fine line between clean, spotless and not clean enough. In the end the horse doesn’t care one way or another.
I rarely get into a “diatribe” over feed. I generally only discuss it with others who are in the business of horses as their livelihood. IMO way too many people rely on subjective “science” of what a horse “needs”.
We have only had to throw hay to our horses in the winter once the grass goes. I use the standard rule of thumb that has pretty sound research behind it. 1.5 - 2% of body weight. For our horses, which at one time was a population of over 40++, the majority of which live out 24/7. They get 20+lbs of hay per day of a decent quality Orchard, 1st & 2nd cuttings that I grew and baled. I grew plenty so I no need to skimp. But need to waste any also. What I didn’t need to get through to the next hay season I sold. Hay is part of our profit margin.
Our horses were given their daily hay with their afternoon feeding. Each horse had their own “pile” of hay. We have big enough pastures to able to place in a clean location through out the winter.
IMO and experience and that of those who have managed large herds for years. The “school of thought” that feels/thinks horses MUST have hay in front of them 24/7 to “graze” on is more of a myth than fact. Ours have done just fine year in and year out for years and years.
We feed grain twice a day. 6-8+ lbs total with 12%+ fat. Horses in training are feed according to needs.
In short our horses that are not in heavy training, or no winter training get 1/2 of a 45+lb small bale per day. Given once a day in the afternoon. They almost always have enough left over the next day to nimble on. We up that on the odd really cold weather spells.