Fig. 6
From: Inheritance of the duration of fertility in chickens and its correlation with laying performance
Response to selection for FDD and hatching egg production at 400 days of age (HEP400). a Overlap analysis of the hens shared among the birds with the highest and lowest EBV for HEP400 and birds with the highest or lowest average EBV for FDD. b Differences in laying performance between the highest and lowest 50% of hens based on the average EBV for FDD. The line chart presents the difference in hen-housed laying rate between the two groups. The boxplots show the differences in HEP400 and age at first egg (AFE) between the two groups. c Differences in laying performance between the highest and lowest 50% of hens selected based on EBV for HEP400. The line chart presents the difference in hen-housed laying rate between the two groups. The boxplots show the differences in HEP400 and AFE between the two groups; and (d) Differences in DF between the highest and lowest 50% of hens based on EBV for HEP400. The line charts present the difference in hatchability at 35 and 60 weeks of age between the two groups. The boxplots show differences in FDD at 35 and 60 weeks of age between the two groups. For each boxplot, the central red point indicates the mean of the corresponding group and the data are expressed as the means ± SD