Effect of Egg Weight and Egg Shape Index on Hatching Performance and Eggshell Quality of White-Nest Swiftlets
Effect of Egg Weight and Egg Shape Index on Hatching Performance and Eggshell Quality of White-Nest Swiftlets
Nurul Isnaini*, Karl Wenas, Muhammad Firdaus Solihin, Hanief Eko Sulistyo, Dedes Amertaningtyas, Faizal Andri
ABSTRACT
This study aimed to evaluate the effect of egg weight and egg shape index on hatching performance and eggshell quality of white-nest swiftlets. A total of 200 white-nest swiftlet eggs were included in this study. The egg weight was classified into three groups, namely Group EW1: 1.61 - 1.80 g, Group EW2: 1.81 - 2.00 g, and Group EW3: 2.01 - 2.20 g. The egg shape index was classified into three groups, namely Group ESI1: 60.01 - 65.00%, Group ESI2: 65.01 - 70.00%, and Group ESI3: 70.01 - 75.00%. The results showed that hatching weight, eggshell weight, and thickness were improved along with the increased in the egg weight (p < 0.05). On the other hand, egg shape index, hatchability, and hatching yield were not significantly differed across three egg weight groups (p > 0.05). The egg shape index had a significant effect on the hatchability of white-nest swiftlets (p < 0.05). Group ESI3 had a higher hatchability as compared to ESI1 (p < 0.05), while ESI2 did not differ with ESI1 and ESI3 (p > 0.05). The egg shape index did not significantly affect egg weight, hatching weight, hatching yield, eggshell weight, and eggshell thickness (p > 0.05). It could be concluded that egg weight is an essential determining factor for hatching weight, eggshell weight, and thickness, while egg shape index is crucial for hatchability of white-nest swiftlets.
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