PENGARUH LAMA SIMPAN DAN WARNA KERABANG TELUR ITIK TEGAL TERHADAP INDEKS ALBUMEN, INDEKS YOLK, DAN PH TELUR

The purpose of this research was to investigate and to compare the effect of tegal duck eggshell colour with different storage time (0, 7, and 14 days) on albumen index, yolk index and egg’s pH. This research was done on April 7--21st, 2014, used complete randomize block design with 3x2 of nest model and orthogonal contrast test. The storage time (P0: 0, P1: 7, and P2: 14 days) as the main block and the eggshell’s colour (W1: light color and W2: dark color) as the partial block with 4 times replications. Each treatment consist of 3 eggs, so that the number of eggs used are 72 and the respond variable in this research are albumen index, yolk index and egg’s pH. The research result shown that storage time and tegal duck eggshell’s colour was significant on albumen index, but not significantly on the yolk index and egg’s pH. Tegal duck eggshell’s color with shell thickness 0,01 mm differences with different time storage (0, 7, and 14 days) were not significant on the value of albumen index, yolk index, and egg’s pH