Gs. Brah et al., INTER-STRAIN VARIATION AND DISTRIBUTION STATISTICS FOR PHYSICAL EGG-QUALITY AND EGG-COMPONENT CHARACTERS IN CHICKEN, Indian Journal of Animal Sciences, 63(9), 1993, pp. 984-988
Selected strains (PL 1 and PL 2) and 1 control line (PL 3) of White Le
ghorns were evaluated for several egg-quality traits at 70 weeks of ag
e, Strains PL 2 with higher egg production, body weight and egg weight
compared to PL 1, was characterized by better shell-quality but poore
r albumen quality. The control line with lower egg production, body an
d egg weight did not differ from PL 2 for egg quality traits. The port
ion of yolk, albumen and shell were similar for the 3 lines. Small dep
artures from the normality of distribution were observed for some of t
he egg-quality traits.