I bought a cow with a set of twins on her from a local auction mart in april 04. I noticed she was in bad shape when i bought her. The owner said he had no feed. I brought her home, gave her tlc and she was doing very well. I put the calves on dairy milk to take the strain off of her. Now she is very boney, drewls, grinds her teeth, a grain pig,first and last at a feeder. To me these are symptoms of johnes disease. If it is, can her calves get it?