Fig. 3From: Systematic analysis of feeding behaviors and their effects on feed efficiency in Pekin ducksThe feeding visit distribution during the day. X axis denotes the time points (hr), Y axis denotes the number of visits. The results for three different periods are illustrated: 19–21 day-old; 22–28 day-old; 29–38 day-old; the initial bird age was 19 d. The number of each RFI group is 33Back to article page