Do you like what your hear?
If you want a one to one conversation about your requirements...
Cows like consistency and so you need to ensure that what you have on farm will last for the required period or make alternative plans, using alternative feed sources to ensure they do. If your forages are short for the season, its better to extend what you have on farm for the whole season, rather than run out part way through and have to change your ration completely. Cows like consistency.
If you want a one to one conversation about your requirements...