We have a five year old doe who has been very fat for a long time. She has been the matriarch or queen in our herd for a long time. The past two times she kidded she has only had singles. She used to have twins every year. Even after she kids she looks like she could have at least a single or twins still left in her. She last kidded in September, a single, and looks fat enough to have at least twins in her right now but she has not been in contact with a buck. One side of her feels very hard. Could this be an extended rumen? Or a parasite overload? We just wormed her with Quest a week or so ago. We just changed from a Rumensin feed to a non medicated feed in December, otherwise she was on Rumensin feed for about four and a half years. Could she have some stomach deterioration from Rumensin? I hoped changing the feed would help decrease the size of her stomach but so far I do not see much difference. I kind of want to figure out what is wrong before we breed her again. I would apreciate any ideas.