Fig. 6. Changes in the ‘resting’ behaviour of mice fed the low-energy diet (A) from early pregnancy (N=15) and (B) from parturition (N=13). Observations made at night are identified by filled symbols; observations during the day are shown by open symbols. During the day, ‘resting’ time was unchanged, but in both groups at night ‘resting’ increased as reproduction progressed. During lactation, ‘resting’ was also generally accompanied by suckling behaviour in the pups. Each point represents the mean percentage time spent in the behaviour across all mice. Parturition is day 0.