A typical 1000 lb cow with a calf (1 Animal Unit) needs around 0.27 ac (0.11 ha) of pasture in excellent condition and applied irrigation, up to 8 ac (3.2 ha) of pasture in poor condition and low precipitation level. Similarly, a 1300 lb cow with a calf (1.3 AU) requires between 0.34 and 10.3 ac or 0.14 and 4.2 ha land. Read more