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Trend lines and mean values that flock sub-populations spent on the range expressed as minutes/flock/day of the subpopulation of stayers, roamers, and rangers in Lohmann brown free-range laying hens during egg collection period of 22, 32, 42, 52, 62 and 72 weeks of age evaluated in 5 flocks. Each dot on the plot represents the average time duration that one sub-population replicate spent on the range.
