Up side of grazing winter wheat is that the plant produces additional stems with seed pods. BTO wheat folks down/over here in N. Texas Blackland Clay, deliberately open their fields to grazing during the winter months. Late January when we normally get a week of warm, dry days, they spray for green bugs, cows are off and crops are usually worthwhile when combined in late spring.
Wheat will oscillate with the weather. If you have a stretch of warm days...good sunshine, temps above freezing, it will put on growth. Cold front, overcast and it goes dormant temporarily. Spring recovery includes rapid growth and advancement into plant maturity.....seed heads of wheat.
Expect even well fed, prior to turnout, bovines turned into any new pasture to make a big mess and check out all your fencing. Then it's one mouthful of wheat sprouts, and 10 steps. When #1 belly gets full it's plop down, mashing a big spot of crop for transfer to stomach 2 and 3. If you get into a wet period, best to get them off and put them on hay till the fields dry up. That's the little I know about it and STO diddling with the process.