Effects of Shell Thickness, Shell Pores and Egg Weight Loss on Hatchability on Japanese Quail Eggs

Authors : S Kudret SAYLAM, Musa SARICA

Pages : 41-46

View : 23 | Download : 11

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This study was conducted to determine the effects of eggshell thickness, pores, and weight loss on hatchability on Japanese quail eggs. A total of 477 eggs, collected within 5 days, placed in an incubator after determining individual egg weights, and eggs were individually weighted on 5, 10, 14, and 18th days of incubation. Percentage egg weight loss was calculated for individual eggs for each incubation interval. On day 18 of incubation, all unhatched eggs were opened and examined macroscopically for evidence of stage of embryonic development. Egg types were classified as infertile insert ignore into journalissuearticles values(INF);, early dead insert ignore into journalissuearticles values(ED);, late dead insert ignore into journalissuearticles values(LD);, embryos that pipped the shell but failed to emerge insert ignore into journalissuearticles values(PIP); and hatched insert ignore into journalissuearticles values(H);. Dry chicks weights from hatched eggs were obtained on day 18. Shell thickness and porosity were determined in all egg types. The greatest egg weight loss until the day 14 of incubation was observed in ED eggs; it was intermediate in LD and INF eggs, whereas it was low in H and PIP eggs insert ignore into journalissuearticles values(P
Keywords : Japanese quail, egg weight loss, shell thickness, shell porosity