Pengaruh Variasi Kecepatan Putaran terhadap Fertilitas, Mortalitas, dan Daya Tetas Telur Bebek (Anas platyrhynchos domesticus) pada Mesin Penetas Telur Otomati: The Effect of Rotation Speed Variation on Fertility, Mortality, and Hatchability of Duck Eggs (Anas platyrhynchos domesticus) in an Automatic Incubator Machine . JBETA 2025, 13 (2), 250-257. https://doi.org/10.24843/j.beta.2025.v13.i02.p06.