When I use to try haylage it turned sour, and our cattle would not eat it. .
Probably put up with to much moisture. Anything over 70% won't allow proper fermentation.
Or, it was not packed correctly. In order to make haylage, it has to be as anaerobic as possible. Anything even close to correct and cows will eat it like candy. Truly good haylage has the problem of cows eating too much of it, not too little, making themselves sick.
