My boys are so fussy- they simply wont touch hay under a year old.....
At pony club camp they never let us bring in hay that was under a year old. I think it was considered to be too rich for horses to eat....but reading this post it seems like eating fresh hay is commonplace practise?
Providing hay is perfectly dry when baled it is perfectly safe to feed immediately. Contrary to popular belief, hay does not have a curing period - it is either grass or it is hay.
Hay does start to lose it's nutritional value the minute it is cut and baled therefore the longer you leave it, the less nutritional it will be. It all depends what you are aiming for by feeding though and you need to be aware of the differences in the nutritional content.
If you are not looking for anything other than bulk, then it doesn't matter when you feed the hay providing it has been stored carefully, but if like my customers, you are looking for the hay to be part of a highly nutritional feeding system, then you would want fresh hay to provide this.
Well - it all comes analysed so I know the nutritional content and has been in the barns for 9 weeks now and I won't need it for another 2 weeks so we'll be safe using it from these posts.