I've got a 14 year old cow - consistently produces the best calves. She's looking pretty ragged this year - having trouble keeping body condition even on fresh pasture. Will graining help or is a higher quality hay a more effective means of keeping her bcs score up? Wondering if it's the teeth that give out or the ability to digest. She sure seems to be up and eating plenty enough to stay thick. She's been wormed too. She did get bred again and I'd like to at least get one more calf out of her.