Fall-planted rye, triticale, and wheat as well as spring pastures soon should be ready to graze. These fields can give great grazing, but be sure you take steps to avoid problems with grass tetany.
Grass tetany is caused by low blood magnesium. Low blood magnesium can be due to low levels of magnesium in lush spring grass, but it also is caused by mineral imbalances like high potassium and nitrogen or low calcium in the diet.