I've carefully (avoiding the situations that make grass clippings dangerous to feed) fed grass clippings to my horses for many, many years.
However my goats had zero interest in eating grass clippings. They'd dry in their feeder, and over a week or so, accidently eat most of them while eating their hay.
They all completely turned their noses up at grass clippings....until yesterday!
Yesterday I bought an old fashioned reel mower with a grass catcher.
The mower worked good enough but the clippings didn't really end up in the catcher. So I only had a small amount of clippings in the catcher with great manual effort to get them there. I figured no point giving the tiny amount to the horses so decided to put them in the doe pen to dry and accidently be consumed along with their hay over the next week or so....wrong!
They immediately ate them with great gusto!
Then only difference I can see is the reel mower made a clean cut of the grass where as the gas mower tears up the grass clippings more before they end up in the catcher.
And since the reel mower was a disappoint in the grass catcher area the fact that the goats will eat clippings from it will keep me using it... so hubby is wrong! It's not going to be a yard ornament!
I've never seen them eat anything rotting. They turn their lips up at pickles. And they eat around moldy hay leaving stuff they don't want. They won't touch a rotting apple, but will eat them when they have dried on the ground. I am sure they wouldn't even touch it if it was fermenting.
All of which I thought odd given the reputation that goats would eat anything.
I have been tempted to start some silage from time to time, but haven't because of their finicky eating habits.
Yeah, I would never let the horses eat very many grass clippings. Even if they didn't get to the fermenting stage, such green grass can cause founder, so I never let them have more than a little as a treat. Cuzco, on the other hand, is not subject to founder and he would never eat more than was ok for him. Once the pile started to ferment I'd scatter it.