GROWTH PERFORMANCE AND IMMUNE RESPONSE OF SILVER POMPANO SEEDS (Trachinotus blocii) FED WITH FEED CONTAINING IMMUNOSTIMULANT SUPPLEMENTS

Abstract

The increase of the growth performance and control of disease can be done by the use of imunostimulan. Immunostimulant is a material that capable of increasing the non-specific immune response of fish. The purpose of this study was to determine the best concentration of immunostimulants in self-formulated pellet feed on the growth performance and immune response of silver pompano fingerling. The immunostimulant content used it was sourced from commercial products Nutricell. There was three concentrations of imunostimulan were used in this study, namely 0.3% (treatment A), 0.5% (treatment B), and 0,0% (treatment K) and one group fish fed with commercial feed as the control and a comparison (treatment P). A total of 840 silver pompano fish seeds with an average initial body weight of 11,13± 1,39 g were kept in 12 cages (0.8 x 0.8 x 0.6 m3) for 30 days. The results showed that the provision of feed supplements containing commercial immunostimulants did not significantly affect the growth rate, The feed conversion and survival rate but produced the highest total leukocyte count of 65,775. x 10. cells/ml and 35.10% phagocytosis rate achieved on the 30th day of treatment. The results of the five-day challenge test showed that treatment A which was the addition of 0.3% immunostimulant feed had lower mortality than other treatments, after being injected with Vibrio alginolyticus bacteria at a dose of 3 x 109 cfu/ml/0.002 g/head fish weight. Based on the results above, it can be concluded that the formulated feed in treatment A which was added with immunostimulant 0.3% (0.7% total in the feed formula) showed a higher survival performance in the nursery phase of silver pompano fish compared to other treatments.

Growth and Health Status of Spiny Lobsters and Snubnose Pompano with Multilevel Floating Net Cage System

“…The SGR value of the Snubnose pompano as a result of this research is higher than the SGR value of the Snubnose pompano kept in round HDPE cages which ranges from 0.86 -0.90 %day -1 with a density of between 5 -15 fish m -3 and a survival rate of 62-84% [31]. It is lower than the SGR value for Snubnose pompano when given feed supplements containing organic minerals Cu, Zn, Mn and immunostimulants in the formulation, namely 2.28 -2.65 %day -1 and 100% survival [32].…”

“…The stress response can be evaluated objectively by observing behavior, or quantitatively by measuring changes in several physiological variables, such as oxygen use, blood composition, pH, hormones, ions, and hemocytes [33]. Physiological variables that can be used as indicators of stress in crustaceans are total hemocycte count (THC) and hemolytic glucose (HG) [32].…”

“…The THC value increased and the HC value decreased during maintenance which lasted 56 days, but within normal limits so it was able to reduce stress. The stress describes a condition where homeostasis is disrupted beyond its normal limits, where in this condition there is a reallocation of metabolic energy from investment activities (growth and reproduction) to activities to improve homeostasis, such as respiration, movement, hydromineral regulation, and tissue repair [32]. As a result, the utilization of feed energy for lobster growth, including the synthesis of immune material, can be disrupted.…”