PEMBERIAN PROBIOTIK DENGAN FREKUENSI BERBEDA TERHADAP LAJU PERTUMBUHAN, EFISIENSI PAKAN, DAN RETENSI PROTEIN UDANG VANAME (Litopenaeus vannamei) DI BAK TERPAL = ADDITION OF PROBIOTICS WITH DIFFERENT FREQUENCY ON GROWTH RATE, FEED EFFICIENCY, AND PROTEIN RETENTION OF WHITE SHRIMP (Litopenaeus vannamei) AT TARPAULIN POND - GAIDA FAIRUZ AMALIA, 141511133122 (2019)