IMPROVING THE HEALTH OF VANNAMEI SHRIMP (Penaeus Vanname) MAINTAINED IN LOW-SALINITY MEDIA WITH POTASSIUM MINERAL SUPPLEMENTATION

Abstract

            The addition of various minerals to freshwater vannamei shrimp cultivation is known to result in higher growth rates. However, growth in their natural habitat, seawater, still results in higher growth rates. This study aimed to enhance growth and analyze the immune response of L. vannamei shrimp reared in freshwater with the addition of potassium challenged with Vibrio parahaemolyticus bacteria. Information on this immune response will provide the basis for developing a potassium mineral formulation that can support shrimp health and maximize their growth. The research method used is experimental using a Completely Randomized Design (CRD) consisting of 5 treatments and 3 replications (P1: Maintenance of seawater media (30 ppt); P2: Potassium Supplementation 0 mg/L + vibrio sp injection; P3: Potassium Supplementation 10 mg/L + vibrio sp injection; P4: Potassium Supplementation 20 mg/L + vibrio sp injection; P5: Potassium Supplementation 30 mg/L + vibrio sp injection). Based on the research that has been done, it can be concluded that the best dose of potassium addition occurs in the P5 treatment, which is 45 mg/L of Potassium. At this dose, the treatment has a significant effect on the SR value, growth, feed efficiency, and immune system (THC, DHC, AF). At P5, the survival rate was 50%, absolute weight gain 34 g, feed efficiency 57%, THC 28 × 106, AF 58%.