Abstract
The objective of this study was to evaluate meat yield and centesimal composition of the Amazonian fish species, A. ocellatus, P. castelnaeana, and L. friderici, in the dry and flood seasonal cycles of rivers. In each seasonal cycle (flood and dry), a total of 60 fish were collected, comprising 20 specimens of each of the following species: A. ocellatus, P. castelnaeana, and L. friderici. Were evaluated the meat yield, cuts yield and centesimal composition of the fish samples. Meat yield in the clean body cuts and skinless filet varied between species and hydrological period. The results showed that seasonal variation influenced the centesimal composition and yield of the species studied, with significant differences between the cuts produced during processing. These findings highlight the need to apply a variety of technological processes to ensure efficient use of these species throughout the year. The total waste represented more than 50% of the whole fish, and the head size was directly proportional to the amount of waste generated. These results underscore the importance of waste utilization for animal and/or human nutrition.
Highlights
In many parts of the world, fish forms a fundamental component of the human diet and is the main source of animal protein (Goes et al, 2016; Temesgen et al, 2019)
In the Brazilian Amazon, which has an estimated average consumption of 369 g/inhabitant/day in the lower Solimões River areas and up to 135 kg/inhabitant/year in the upper Amazon, fish consumption rate exceeds that of many parts of the world
High fish consumption is a feature of the state of Amazonas, with several factors contributing to this dietary trend, such as the geographical location, indigenous culture, affordability of fish for all classes, and diversity of fish species
Summary
In many parts of the world, fish forms a fundamental component of the human diet and is the main source of animal protein (Goes et al, 2016; Temesgen et al, 2019). In the Brazilian Amazon, which has an estimated average consumption of 369 g/inhabitant/day in the lower Solimões River areas and up to 135 kg/inhabitant/year in the upper Amazon, fish consumption rate exceeds that of many parts of the world. It is the main protein source for populations that live on the banks of the Amazonian rivers (Cerdeira et al, 1997; Batista et al, 2004). High fish consumption is a feature of the state of Amazonas, with several factors contributing to this dietary trend, such as the geographical location, indigenous culture, affordability of fish for all classes, and diversity of fish species
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