Oxidative stability of tilapia feeds containing Saccharomyces cerevisiae and Spirulina platensis

Author(s)

Thiago Luís Magnani Grassi ^[1] ; Juliana Sedlacek-Bassani ^[2] ; Elisa Helena Giglio Ponsano ^[3]

Affiliation

^[1] Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP). Faculdade de Medicina Veterinária - Brasil

^[2] Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP). Faculdade de Medicina Veterinária - Brasil

^[3] Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP). Faculdade de Medicina Veterinária - Brasil

• Document type: Journal article
• Source: Ciência Rural; v. 50, n. 1 2019-12-13.

Abstract

ABSTRACT: The aim of this study was to evaluate the effect of the inclusion of microbial biomass on the oxidative rancidity of tilapia rations stored for 12 months. Treatments included a control diet and diets supplemented with either 0.01% vitamin E, 0.25 and 0.5% of Saccharomyces cerevisiae and 0.25 and 0.5% of Spirulina platensis. Experimental diets were stored in the dark inside plastic bags at room temperature (25 °C) for 12 months. The oxidative rancidity was measured as thiobarbituric acid reactive substances (TBARS). It was concluded that the inclusions of Spirulina platensis at 0.25% (1.734 ± 0.206) and 0.5% (1.629 ± 0.181) and Saccharomyces cerevisiae at 0.5% (1.459 ± 0.305) minimized the oxidative rancidity in comparation to control diet (2.843 ± 0.109) of Nile tilapia until 12 months of storage. (AU)

• FAPESP's process: 15/25853-1 - Use of agroindustrial residues containing substances with biological activity for animal and human feeding
• Grantee: Elisa Helena Giglio Ponsano
• Support Opportunities: Regular Research Grants
• FAPESP's process: 15/21216-7 - Microbial biomass for tilapia feeding
• Grantee: Thiago Luís Magnani Grassi
• Support Opportunities: Scholarships in Brazil - Doctorate