The detaset describes the response of a suckler cow in terms of milk yield (MY, kg��d-1), which was exposed to two feed restrictions (FR) consisting in the reduction of net energy requirements by 50%. The dataset has three columns, the first one is time (t) in days (d), the second one is also time (t2, d) and the third column is MY. The first FR started at t = 0 d and lasted untill t = 3 d, the second FR started at t = 21 d until t = 31 d. The second column for time is obtained from the first column by omitting data points corresponding to restriction and recovery periods. Negative values for t and t2 represent the pre-challenge period.