Required Force for Penetrate the Duck Eggshell to Protect at Handling and Hatching

The research aims to study the force required break shell of duck eggs, which helps provide conditions for process hatching eggs and circulation. physical mechanical properties hade been measured. most important results were as follows: arithmetic mean length longest diameter 56.19, 42.94 mm, coefficient shape, surface area volume 0.77, 18071.11 mm 2, 16.0 mm3 , thickness eggshell from middle, top bottom 0.23 0.21 minimum maximum egg occurrence hatching, at top, (0.05, 32.24 N), (0.11, 25.67 32.70 standard deviation was 7.53, 6.52, 8.02, respectively, 14.91, 12.23, 14.73 N, respectively. distance that advances 0.015, 9.0 center, 13.8 shell. ANOVA analysis showed there significant differences in value compressive depending on ​​​​breaking egg. least them ​​fracture (collapse) when hatched. It is preferable use largest pressure (32.7 N) ensure highest rate inside hatchery.