Stocking density of native fish and their hybrids reared in net tanks

• Autor(a) principal: Maciel, Hévea Monteiro
• Data de Publicação: 2021
• Outros Autores: Araújo, Alice Ferreira, Dentz, Bruna Alessandra Von, Lira, Karen Carrilho da Silva, Signor, Arcangelo Augusto
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Research, Society and Development
• Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/18591
• topic: Parâmetro produtivo; Índice zootécnico; Piscicultura intensiva; Manejo.; Parámetro productivo; Índice zootécnico; Piscicultura intensiva; Manejo.; Productive parameter; Zootechnical index; Intensive fish farming; Management.

For the execution of this work, scientific articles were searched in the main databases (Scielo and Scopus), academic google and technical materials available in digital form related to the stocking density of the main native species and their hybrids in tank rearing systems -network. From the survey carried out, several studies were obtained that assess the stocking density. In view of these findings, it can be inferred that the production per area of ​​Colossoma macropomum and Brycon amazonicus in cages are higher with increasing stocking density. Likewise, most studies with species of the genus Pseudoplatystoma spp, and Arapaima gigas indicate the best performance indices when subjected to high stocking densities, in the different stages of cultivation. However, for Piaractus mesopotamicus cultivated in different stocking densities, it was observed that the increase in stocking density inhibits the growth of individuals. Given the above, to strengthen the development of the fish farming production chain in net tanks, further studies are needed, conducted on commercial scales according to the producer's reality. We emphasize that in works with stocking densities or food management, whenever possible, the productive performance and the health and well-being of animals in housing must be combined with economic evaluations, as not always those densities in which they present the greatest growth present the greatest productive biomass.