Correlation Between Egg Production Performance of Sikumbang Jonti Ducks as a Selection Method in Smallholder FarmsCorrelation Between Egg Production Performance of Sikumbang Jonti Ducks as a Selection Method in Smallholder Farms. (2025). Jurnal Sain Peternakan Indonesia, 20(1), 40–46. https://doi.org/10.31186/jspi.id.20.1.40-46