we have one 4 year old cow in our herd who looked a little tough over the summer, never really bad, but not gaining as the other herdmates were. As we are heading into cold weather she is getting boney, ribs showing, back and hip bones pretty prominent. She eats cake with the rest and seems to be grazing fine. We poured Ivomec in November on the whole herd as we did have a cow with a case of bottle jaw back in Sept or Oct. What could be the problem and any recommendations for this cows health :?: