A transdisciplinary approach to the initial validation of a single cell protein as an alternative protein source for use in aquafeeds

You start from a really bad formulated control feed. You do everything possible to have low growth, like removing faeces, molts, and starving the shrimp every day for 16 hours. You achieve 150 % growth in 150 days ? Starting from 4,5 gram, it means your shrimp were 11 gram 5 months later ? I really don't see the point of publishing such results. It is so far away from any results in the shrimp farmining industry. I am however a strong believer in bacterial proteins, but the nutritional needs of the shrimp should be respected. Replacing fish meal 1 by 1 will never work.

The basic equation of aquaculture is: conversion of cheap protein to a higher value protein. No new protein is created and conversion of indigestible plant (for humans) protein to human digestible protein is at best inefficient because plant protein is often encased in cellulose cell walls and/or associated with anti-nutritional factors (notably in soybean).