Akademik Veri Yönetim Sistemi
Revista Brasileira de Ciencia Avicola / Brazilian Journal of Poultry Science, cilt.28, sa.1, ss.1-11, 2026 (SCI-Expanded, Scopus)
This study investigated the significance of layer chicken genotype on hatchling weight, growth performance and egg quality traits using a total of 312 Hy-Line and Akbay layer chickens. The body weight (BW) during most of the rearing period and the initial egg-laying cycle was significantly higher for the Hy-Line genotype as compared to the Akbay (p < 0.05). Egg weight (EW) (at 28, 32, and 44 wk), egg length (EL) (at 32 wk), egg diameter (ED) (at 28, 32, 36, and 44 wk), eggshell thickness (EST) (at 24, 28, 36, 44, and 48 wk), and shell weight (SW) (at 24, 28, 32, 44, and 48 wk) were significantly higher among Hy-Line than Akbay (p < 0.05). The egg breaking strength (EBS) at 24 weeks was higher for the Akbay genotype; however, the EBS at 44 and 48 weeks of age was higher among Hy-Line birds (p < 0.05). The yolk height (YH) (28 and 32 wk) and yolk index (YI) (28 wk) were significantly higher for Hy-Line than Akbay hens (p < 0.05). At 44 weeks, the a* value was higher for the Akbay genotype; however, the a* value was higher for Hy-Line hens at 52 weeks (p < 0.05). Additionally, the b* value at 28 weeks was higher among Akbay hens than Hy-Line hens (p < 0.05). The albumen length (AL) (at 28 and 44 wk), albumen diameter (AD) (at 28, 40, and 44 wk), and albumen pH (A-pH) (at 28 wk) were significantly higher among Akbay hens; however, the albumen height (AH) (at 24 and 28 wk), albumen index (AI) (at 28 wk), and Haugh unit (HU) (at 28 wk) were significantly higher for Hy-Line hens (p < 0.05). It was concluded that, compared to the Akbay strain, Hy-Line was characterized by superior growth performance and other external and internal traits with economic importance, including egg weight, breaking strength, Haugh unit, and shell thickness.