Evaluation of Phytase Impact on <i>In Vitro</i> Protein and Phosphorus Bioaccessibility of Two Lupin Species for Rainbow Trout (<i>Oncorhynchus mykiss</i>).

Azcuy, Rosendo L; Casaretto, Matías E; Márquez, Lorenzo; Hernández, Adrián J; Morales, Gabriel A

Evaluation of Phytase Impact on In Vitro Protein and Phosphorus Bioaccessibility of Two Lupin Species for Rainbow Trout (Oncorhynchus mykiss).

Azcuy, Rosendo L; Casaretto, Matías E; Márquez, Lorenzo; Hernández, Adrián J; Morales, Gabriel A.

Afiliação

Azcuy RL; Facultad de Agronomía, Departamento de Producción Animal, Cátedra de Acuicultura, Universidad de Buenos Aires, Buenos Aires, Argentina.
Casaretto ME; Facultad de Agronomía, Departamento de Producción Animal, Cátedra de Acuicultura, Universidad de Buenos Aires, Buenos Aires, Argentina.
Márquez L; Centro de Investigación, Innovación y Creación UCT, Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco, Chile.
Hernández AJ; Núcleo de Investigación en Producción Alimentaria, Departamento de Ciencias Agropecuarias y Acuícolas, Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco, Chile.
Morales GA; Núcleo de Investigación en Producción Alimentaria, Departamento de Ciencias Agropecuarias y Acuícolas, Facultad de Recursos Naturales, Universidad Católica de Temuco, Temuco, Chile.

Aquac Nutr ; 2024: 2697729, 2024.

Article em En | MEDLINE | ID: mdl-38213755

ABSTRACT

ABSTRACT

Legumes are an important source of protein, lipids, and other essential nutrients. As the demand for protein and lipids continues to surge on a global scale, there is a growing interest in incorporating legumes into aquafeeds. This shift is driven not only by the escalating growth of the aquaculture sector in recent years but also by the imperative to diminish the dependency on traditional resources like fishmeal (FM) and fish oil. Amongst legumes, different lupin species had been identified as a potential protein source to partially reduce the inclusion of FM in countries such as Australia, Chile, and the European Union. A comprehensive evaluation of their nutritional profiles, overall characteristics, and potential antinutritional factors is essential for informed utilization and the implementation of nutritional enhancement strategies. In pursuit of this goal, an in vitro gastrointestinal simulation system was devised to replicate the digestive conditions of rainbow trout (Oncorhynchus mykiss). The study focused on determining the bioaccessibility of protein and phosphorus within two sweet lupin varieties (alkaloids < 0.05) with high (Lupinus mutabilis) and low (Lupinus angustifolius) native phytic acid content evaluated as whole (W) or dehulled (D) seeds meals and the effect of a single dose of phytase (2,500 FTU/kg DM). Additionally, regular soybean meal (SBM) served as reference (10 treatments with 3 replicates). A 2,500 FTU/kg DM phytase dose increased the levels of PO4-3 released throughout the intestinal phase by 122.6% for L. mutatabilis W, 116.3% for L. mutatabilis D, 65.2% for L. angustifolius W, 59.0% for L. angustifolius D, and 91.8% for SBM compared to controls without phytase. The bioaccessibility of amino acids in varieties treated with phytase increased with respect to the control without phytase. L. mutabilis was found to be a potentially viable alternative as a good quality protein source for the manufacture of environmentally friendly aquafeeds.

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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Aquac Nutr Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Argentina País de publicação: Reino Unido

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