| 【Objective】 The study was to explore the correlation between comb traits and egg production traits of
72-week-old chickens【Method】 The comb traits and egg production traits of 72-week-old chickens were determined
by using the resource population F2 established by Dongxiang Green-shell laying hens and single-comb White Leghorn
chickens as parents. 【Result】 The results showed that 24 pairs of correlations among 9 variables reached extremely
significant. Among the comb traits, the correlation between comb weight and comb area was the largest with the correlation
coefficient of 0.846 (P ＜ 0.01). As for the egg production traits of 72-week old, the correlation between egg number and egg
weight was the greatest with the correlation coefficient of 0.139(P ＜ 0.01). Among the traits of two groups, the correlation
between comb length and egg weight of 72-week old was the greatest with the correlation coefficient of 0.118 (P ＜ 0.01).
The first canonical correlation coefficient between comb traits and production traits was 0.203, which was extremely
significant. 【Conclusion】 The correlation between the two traits was mainly affected by comb height, comb area and egg
number, egg weight and eggshell strength of 72-week old. |
