ANISA IRENE ULY Pengarang Dr. Radempta Wea, S.Pt., MP Dosen Pembimbing 1 Helda, S.Pt., M.Si Dosen Pembimbing 2 Helda, S.Pt., M.Si Penguji 4 Asrul, S.Pd., M.Si Penguji 1 Dr. Cytske sabuna, S.Pt., M.Si Penguji 2 Dr. Redempta Wea, S. Pt., MP Penguji 3 AHMAD FADIL Contributor

This study aims to examine the effect of fermented liquid feed made from tamarind seeds on mineral content. This research was conducted for eight months starting from July 2020 to February 2021 at the Nutrition and Animal Feed Laboratory of the Kupang State Agricultural Polytechnic. This research uses whole tamarind seeds from the South Central Timor area and feed ingredients in the form of bran, corn, meat and bone meal, and soybean meal. The research variables were Calcium, Phosphorus, and Magnesium. This study used a completely randomized design (CRD) with four treatments and five replications consisting of R0: Liquid feed with 0 days of fermentation (without fermentation), R1: Liquid feed with fermentation time of 7 days, R2: Liquid feed with 14 days of fermentation R3: 21 days of fermentation, and R4: 28 days of fermentation. Data were analyzed using analysis of variance and Duncan's further test. The results showed that the duration of fermentation had a very significant effect (P<0,01) on the mineral content. It is recommended that further research be carried out on the use of liquid feed made from tamarind seeds in livestock, especially pigs in the grower phase to determine their production and reproductive performance. Keywords: Magnesium, Phosphorus, Calcium, Pig Feed