https://www.fishfarmingexpert.com/archive/fish-waste-can-be-used-as-a-sustainable-organic-fertilizer/1265404

Tina Hull specializes in making small farms profitable and is a recognized authority in organic fertilizer, according to the following article in the Commodity Futures Trader. And while the fish processing industry is looking for ways of utilizing the inedible waste from their plants for ever higher purposes, some material may be best suited for the production of agricultural fertilizer- liquid, fish emulsion organic fertilizer.

Once again, we need to repeat that organic growers need not worry that fish emulsion fertilizer is depleting our oceans of the important Menhaden fish or other fish that people need for food. Fish emulsion if primarily made from fish waste of the established animal feed and fish oil industries, which would have been dumped in landfills if not used.

https://www.sciencedirect.com/science/article/abs/pii/S0956053X20303913

Fish industries generate a substantial amount of FW (fish waste). Depending on the level of processing or type of fish, 30–70% of the original fish is FW.

The amount of FW available in Norway for production of fertilizers may facilitate the establishment of an industrial product that can replace the currently common use of dried poultry manure from conventional farming in organic farming.

https://pmc.ncbi.nlm.nih.gov/articles/PMC3614052/

Efficient utilization of by-products has direct impact on the economy and environmental pollution of the country. Non-utilization or under utilization of by-products not only lead to loss of potential revenues but also lead to the added and increasing cost of disposal of these products

Waste products from the poultry processing and egg production industries must be efficiently dealt with as the growth of these industries depends largely on waste management.

The United States Dept. of Agriculture Economic Research Service has found that 11.4% of the gross income from beef is from the by-products. The figure for pork is 7.5%.

Meat and bone meal (MBM) was widely recommended and used in animal nutrition as a protein source in place of proteinaceous feeds because of its content of available essential amino acids, minerals and vitamin B12. MBM and related rendered protein commodities have potential for use in applications other than animal feed, including use as a fuel or a phosphorus fertilizer