Shrimp farms live and die on feed conversion ratio. A point of FCR improvement on a 50,000-tonne-per-year hatchery operation is the difference between a profitable year and a salvage year. The single most underused lever for improving FCR in early-stage shrimp is dietary phospholipid supplementation.
The reason is biological. Larval and post-larval shrimp (the PL1 to PL15 window) have limited capacity to synthesise phospholipids de novo. Crustaceans don't have a vertebrate-style bile system; they emulsify dietary lipid using non-bile enzymes plus the dietary phospholipids themselves. When the diet is low in phospholipid, larvae have both less emulsifier and less PC for membrane construction. Growth and survival both fall.
The published intervention is dietary phospholipid inclusion, typically 1–3% of the diet (soya, sunflower, or marine-derived). The supplement provides PC the animal can't synthesise fast enough at this life stage and contributes to lipid digestion via the dietary-emulsifier route. Growth and survival improve in the published trials.
The peer-reviewed literature on this is broad and consistent. Published peer-reviewed trials in vannamei post-larvae consistently show survival and growth gains when dietary phospholipid is added in the 1–3% range (Coutteau, Geurden, Camara, Bergot & Sorgeloos, Aquaculture 155:149–164, 1997; Geurden, Coutteau & Sorgeloos, Aquaculture 131:303–314, 1995; Gong et al., Aquaculture 190:305–324, 2000). Specific gains depend on baseline diet composition, source, and inclusion rate — GIIAVA does not publish a single headline % figure because the spread across trials is wide and any number we'd give for your operation would need to come from your own pen / pond trial.
For grow-out diets the math shifts. Adult shrimp can handle dietary triglycerides; phospholipid supplementation still helps but the marginal FCR gain is smaller. Many integrated operations therefore concentrate phospholipid inclusion in the early stages and step it down through grow-out.
What to look for in a phospholipid source: high phosphatidylcholine fraction (PC is the most bioactive phospholipid for emulsification), low free fatty acid content (FFA suggests oxidative damage), and a verifiable active ingredient — not a filler-loaded blend. We've written separately on the emulsion stability test that distinguishes real product from filler.
GIIOFEED-L is GIIAVA's phospholipid grade engineered for shrimp and fish hatcheries. We supply it in liquid and powder formats, with full traceability and consistent batch-to-batch PC standardisation.
