Hay Stone Pig- Timothy vs Orchard grass

[VBaamonde]

Is there a difference in calcium content between timothy hay and other grasses such as orchard or meadow? I know to never use alfalfa. My pig is very stone prone. The rest of her diet is very calcium limited as well and she is currently pellet-less and on potassium citrate (cant say its doing much for her). She's 6 and always eaten timothy hay- just wondering if there is a better option.

 

[bpatters]

Either is fine.

 

[Gandalf]

The calcium content of the different grass hays is so similar that it is hardly worth mentioning. But if you are looking for specifics, the following has a chart listing the calcium contents:
https://www.guinealynx.info/hay_calcium.html