<![CDATA[One way to reduce hatching failure is to set the correct angle of egg rotation during incubation in the incubator. This study is conducted to investigate the effects of a 90° egg turning angle (automatic) and 180° (manual) on fertility, hatchability, mortality, and hatch weight of Cihateup duck eggs. The research activities were conducted at the hatching laboratory of the Vocational School, IPB University, using 70 duck eggs divided into two treatments: P1 (automatic turning with a 90° rotation angle) and P2 (manual turning with a 180° rotation angle). Data analysis was performed using T-test to identify differences between two treatments.The results showed no significant differences in fertility and hatch weight between the two treatments (P>0.05). This may be the management of incubation parameters including temperature, humidity, and egg turning angle settings did not affect these two factors. However, hatchability and mortality showed significant differences (P<0,05). The manual 180° turning treatment produced higher hatchability (52,38%) and lower mortality (47,62%) compared to the automatic 90° turning with hatchability of 21,43% and mortality of 78,57%. These results indicate that a turning angle of 180° is more optimal in supporting embryo development and increasing the success rate of hatching Cihateup duck eggs. It is recommended to use a 180° egg turning angle in incubators to improve the hatching performance of Cihateup ducks.]]>
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