Three days ago Mildred quit eating grain. Mildred had typical signs of left displaced abomasum including the characteristic ping heard with a stethoscope under the last three ribs. In addition, the cow's blood chloride level was low. Cows eating a high roughage diet are more likely to be affected. Cows eating a high concentrate diet are more likely to be affected.
Cows eating roughage low in vitamin E are more likely to be affected.
Just this morning, you watched her calve and then stand up. In a few minutes she fell down. Her leg is obviously broken and she can't stand. Now you have an orphan calf. Give vitamin A and E injection.