Really leafy alfalfa hay can be a killer, especially if its wet. I lost a fine 2nd calf heifer to 3rd crop alfalfa a couple years ago. I fed early in the morning and then went to church. On the way home i could see her down and bloated. I jumped the fence and ran to her with the intention to open her up with my knife but was too late. She'd been dead for maybe 5 minutes. I'd fed a bunch of small bales out in a feedrow of grass hay and then fed a couple bales of third crop alfalfa scattered way out. She musta got more than her share. Ist crop is usually fine but prime 2nd and 3rd scare me. I won't feed it in a manger period. But that's only my experience and all ya'll know i'm unreliable at best! :wink:

The water issue raises questions that a post mortem might answer. Or a good vet! Good Luck!