If regrazed, it would be a rotational system. Time-limit grazing Livestock graze a limited amount of high quality forage for a short period, usually once or twice daily, as a supplement to lower quality forage. Rotational grazing involving two groups of livestock with different nutritional needs. The group with higher requirements grazes a paddock first to select prime feed. The second group grazes after the first group has been moved to a fresh paddock.
Calves are first grazers but retain access to the paddock where the second grazer cows are confined.
Within a week following grazing, most grasses and legumes will begin regrowth. Therefore, short grazing periods of 1 to 3 days will improve the persistence of desired forages by preventing grazing of the regrowth. Grazing periods that are longer than one week deplete the supply of palatable legumes and grasses as livestock actively seek these forages. Forage legumes like alfalfa, red clover, and birdsfoot trefoil usually will not remain unless their reserves can be replenished with a 4-week rest period. Therefore, in continuously grazed pastures, perennial grasses are the predominant species after a few years.