This research was aimedto determine the effect of egg index on fertility, hatchability, hatching weight and mortality of KUB chicken embryos (Kampung Unggul Balitbangtan). This research method used a completely randomized design (CRD) with 3 treatments and 6 replications where each experimental unit consisted of 9 KUB eggs. The three treatments were differentiated based on the egg index value, namely, P1 (72); P2 (72-76) and P3 (76). The results showed that the egg shape index of KUB chickens had no significant effect (P0.05) on fertility, hatchability, hatching weight and embryo mortality.
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