Protein Inputs of Animal Origin Used in the Substitution of Fish Meal in Aquaculture Feed

Objective: Indicate researches results carried out with alternative sources of protein from by-products of animal origin to replace fishmeal in the nutrition of aquaculture species. Design / methodology / approach: A search was carried out on new sources of protein of animal origin that have been carried out experimentally with species of aquaculture interest; using an information search methodology through an analysis of metadata stored in databases of the world wide web. Results: The advantages and disadvantages of the inclusion of flours of by-products of animal origin in the diet of aquatic organisms are referenced, however, it is essential for global aquaculture to emphasize that this exchange of proteins should not affect aquatic ecosystems, but on the contrary mitigate the effects of environmental impact and favor the sustainability of aquaculture activity. Limitations of the study / implications: The good results of the inclusions of meals of animal origin in substitution of fishmeal, but to date there are no reports indicating this importance to the substitution in commercially balanced food. Findings / conclusions: Each of the food alternatives described in this compilation works at certain nutritional levels, decreases costs and increases the digestibility index, which allows better water quality by discharging less nitrogen to the aquatic environment, without sacrificing quality of the diets and their energy content of the final products.  Objective: To highlight some studies carried out with alternative protein sources frombyproducts of animal origin to replace fish meal (FM) in the nutrition of aquaculturespecies.Design/Methodology/Approach: A search for new protein sources of animal origin wascarried out and experimentally evaluated with species of aquaculture interest, employingan information search methodology through the analysis of metadata kept in databasesthroughout the World Wide Web.Results: Advantages and disadvantages of including byproduct flours of animal origin inthe diet of aquatic organisms are pointed out. However, for worldwide aquaculture it isessential to emphasize that this protein exchange should not affect aquatic ecosystemsbut rather mitigate the effects of environmental impacts and promote the sustainability ofaquaculture.Study Limitations/Implications: The results of incorporating flours of animal origin insubstitution of FM in the diets of aquaculture species are experimentally indicated, whilespecifying that there are no reports indicating the transcendence of such substitution incommercially balanced meals.Findings/conclusions: Each of the dietary alternatives described here works at certainnutritional levels, decreases costs and increases the digestibility index, allowing for 2better water quality by disposing less nitrogen into the aquatic environment, withoutsacrificing the quality of the diets or the energy content of the final products