Abstract
Abstract: The objective of this work was to assess the organoleptic and nutritional quality of fillets of cultured pirapitinga (Piaractus brachypomus), fed diets with either partial or total substitution of fishmeal, and to determine the nutritional quality of the biofloc meal. Fish were cultured in 500-L tanks with 84 fish m-3, treated with biofloc technology (BFT), and fed three isoproteic diets (24% crude protein, CP) formulated with the following protein sources: soybean meal (SM); soybean meal + fishmeal (SM+FM); and soybean meal + spirulina (SM+SP). After 84 days of culture, microbiological, nutritional, and sensory analyses were carried out on fillets with skin and without scales. There were not significant differences for dry matter, CP, moisture, and fat content between treatments. The fatty acid profile showed 21.3±1.03% polyunsaturated fatty acids (PUFAs = ω-3 + ω-6), 37.11±1.29% monounsaturated fatty acids (MUFAs), and 41.58±1.34% saturated fatty acids (SFAs). The protein sources soybean meal and spirulina do not affect the fillet quality of pirapitinga nor the nutritional quality of biofloc meal.
Highlights
Fish consumption in the world has grown at 5.3% per year and has reached a consumption of 20.5 kg per capita year in 2018 (FAO, 2020)
Fish were cultured in 500-L tanks with 84 fish m-3, treated with biofloc technology (BFT), and fed three isoproteic diets (24% crude protein, CP) formulated with the following protein sources: soybean meal (SM); soybean meal + fishmeal (SM+FM); and soybean meal + spirulina (SM+SP)
Aquaculture has been intensifying production systems with a more sustainable approach in both environmental and economic aspects (Avnimelech, 2009). Species such as tilapia Oreochromis niloticus, shrimp (Emerenciano et al, 2014), and pirapitinga have been produced in more intensive systems like the biofloc technology (BFT), in order to improve their competitiveness and productivity, as well as to allow of a better use of space and water (Chaverra Garcés, 2016)
Summary
Fish consumption in the world has grown at 5.3% per year and has reached a consumption of 20.5 kg per capita year in 2018 (FAO, 2020). Aquaculture has been intensifying production systems with a more sustainable approach in both environmental and economic aspects (Avnimelech, 2009) Species such as tilapia Oreochromis niloticus, shrimp (Emerenciano et al, 2014), and pirapitinga have been produced in more intensive systems like the biofloc technology (BFT), in order to improve their competitiveness and productivity, as well as to allow of a better use of space and water (Chaverra Garcés, 2016). These favorable characteristics of the BFT system have led many producers to use this technology
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