That's probably why feed lots go to the trouble of chopping hay to feed cattle they are finishing. I was really surprised at just how much cows will clean up chopped hay verse's hay that hasn't been chopped.
I can tell a big difference in my cattle's body condition at the end of winter ever since I have stared feeding chopped hay. That and the fact I feed my hay in skirted feeders that eliminates 25 to 30 % of waste on every bale I feed to them.
Eliminating that much waste is like feeding your cattle 33 extra round bales per every 100 bales you feed. Instead of your cattle only eating 66 bales out of every 100 bales you feed because the cows were able to waste the other 33 bales because it was feed either by the bales of hay being sit out with no feeder at all or poorly designed feeders like these black plastic pipe ring feeders. That you see a lot of your hay tromped into the mud where the hay had just fail out of the feeder around the bottom. Or where the cows had just flipped the feeder over and wasted most of the bale by tromping the hay in the mud and using the rest of the bale for bedding.
That's why these feed lots feed chopped hay in bunk feeders that they don't have 20 or 30 % waste. Just imagine how much waste 20 to 30 % is when your feeding several hundred head in a feed lot for finishing.
Your losing money in more ways than just the waste of the hay. That wasted hay causes you to lose a $1.40 or so per lb that your cattle didn't gain because they tromped your hay into the mud or didn't digest it as good as they could have if it had been chopped. You lose money on the cost of fuel it took you to bale/haul/feed that 20 to 30 % of wasted hay.
The list of reasons a cattlemen should try and eliminate wasted hay and get better nutrition results out of the hay you feed goes on and on.
Yes a silage baler cost more as compared to a conventional round baler. I have baled hay with a economy style Vermeer Rebel. And I was pretty happy with it. No more hay than I was bailing with it at the time. I really didn't notice or pay any attention to things like hay wasted through feeding it or because watered absorbed due to how tight and compact or tight the bale is baled penetrated the bale causing 5 or 6 inches of waste from sitting out in the rain.
I would say all hay stored outside of a barn in the weather is going to have some or certainty more waste than hay stored in a barn out of the rain and elements. And I hope to have more barn space to store my hay out of the weather than what I have now pretty soon. Adding on to my current barn now.
But depending on balers some wrap tighter bales and that helps some in eliminating waste.
I've seen the Vermeer marketing on chopped bales. They say a cow will take a bite of hay, chew on the middle and the ends fall to the ground, wasted. If the bales are prechopped into strips there are no ends to waste. It makes sense I guess, I have never watched a cow eat to verify. Ours still pick and sort through the best stuff just to be a pain in the rear.
We have a 604 Pro. Not actually a Vermeer baler, it's a Welger with Vermeer stickers. It's been pretty good.
We don't chop any of our dry hay. They make a huge mess when you cut the net off and you can't really unroll them, you just get a big pile that might stretch 50ft.
What we chop goes through the mixer, which helps considerably in processing time. Not as good as a forage chopper, but nowhere near the expense.