We had a set of twins from a heifer. The heifer (now cow) didn't do such a good job with the twins and we've been bottle feeding. They didn't get enough colostrum and got fevers within a couple of days of birth and we put them on Nuflor for a couple of weeks. One of the twins is doing good now but the other twin has been less than active and now has really swollen leg joints and is having difficulty getting up on her legs. I think based on her pace, she won't be getting up tomorrow. Any suggestions?