Proteins are made up of amino acids. Different organisms on this planet need different amounts of amino acids for optimal growth. Not all proteins are created equal in their composition of amino acids. The wrong balance or lack thereof will have a negative affect on growth. It is a false assumption to infer that all proteins are equal.Originally Posted by 15mules
You can assume the cost of the duckweed offsets the cost of your feed and calculate the cost/benefit ratio from that. Growing duckweed can be an inexpensive venture in itself.
If it's not a good fit for you or your business, then don't include it. For some, growing duckweed on the farm can be done inexpensively. It is very cheap to grow duckweed; so, there is potential for cost savings. Hell, you can even sell it as a premium feed product. There's plenty of hobbyists out there that would pony up for some. Make sure to put ORGANIC and HEIRLOOM real big on the package!Originally Posted by 15mules
Another point, fish feed is not the same price in all parts of the world nor is it the same quality. This affects the cost/benefit ratio significantly.