Modeling of nutritional behavior and harvest profit margin in fattening pacu (Piaractus mesopotamicus) fed on balanced digestible protein contents and raised in an intensive recirculating aquaculture system

Author(s)

Khan, Kifayat Ullah ; Gous, Robert Mervyn ; Nascimento, Thiago Matias T. ; Sakomura, Nilva Kazue ; Mansano, Cleber Fernando M. ; Queiroz, Daniel Monge A. ; Rodrigues, Andressa Tellechea ; Boaratti, Andre Zuffo ; Romaneli, Rafael de Souza ; Fernandes, Joao Batista K.

• Document type: Journal article
• Source: ANIMAL FEED SCIENCE AND TECHNOLOGY; v. 292, p. 15-pg., 2022-10-01.

Abstract

Adjusting aquafeed to obtain sustainable growth and maximum profit margin of harvest is a worthy stride toward achieving the Sustainable Development Goals (SDGs) outlined by the United Nations. Therefore, this research aimed at modeling of nutritional behavior and harvest profit margin in fattening pacu (Piaractus mesopotamicus) fed on balanced digestible protein (BDP) contents and raised in an intensive recirculating aquaculture system (RAS). The feeding trial consisted of six treatments with three randomly arranged replicates (tanks) per treatment. A total of ten fattening pacus (490.60 +/- 14.39 g, initial weight) were stocked per tank. Six experimental feeds containing the increasing contents (163, 201, 238, 272, 315, and 348 g kg-1 diet, dry matter) of BDP were manually fed to the fish for seven weeks three times a day until apparent satiation. The data obtained over the test diets were assessed through appropriate statistical procedures and mathematical models. Optimal levels of BDP were calculated for different nutritional and economic scenarios. Feed cost showed an ascending linear relationship with the BDP intake. Feed intake, feed efficiency, final body weight, weight gain, and specific growth rate (AU)

• FAPESP's process: 13/25761-4 - Modeling production and nutritional requirements of poultry and fish
• Grantee: Nilva Kazue Sakomura
• Support Opportunities: Research Projects - Thematic Grants