I have a cow that is down and she won’t stand up. She can try to stand on her hind legs but front legs are unable to stand up on. We thought she was calcium deficient or had grass tetany but have gave her 6 bottles of calcium in last 3 days as well as magnesium. Vet looked at her yesterday said it was calcium but like I said have gave her 6 bottles of calcium and she still can’t get up. Holds her head up and will drink from bucket provided. Any ideas or suggestions? Thanks in advance!