The fatty acid compositions of total, neutral and polar lipids in wild and farmed lambari (Astyanax altiparanae) (Garutti & Britski, 2000) broodstock

Autor(es)

Goncalves, Ligia Uribe ^[1] ; Parisi, Giuliana ^[2] ; Bonelli, Antonio ^[2] ; Sussel, Fabio Rosa ^[1] ; Macedo Viegas, Elisabete Maria ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Zootecnia & Engn Alimentos, Dept Zootenia, Sao Paulo - Brazil

^[2] Univ Florence, Dipartimento Biotecnol Agr, Florence - Italy

• Tipo de documento: Artigo Científico
• Fonte: AQUACULTURE RESEARCH; v. 45, n. 2, p. 195-203, JAN 2014.
• Citações Web of Science: 14

Resumo

One way to develop broodstock fish diets is to determine the compositions of wild broodstock tissues and attempt to replicate these compositions in the eggs of farmed fish via dietary manipulation. We collected 30 wild and 30 farmed lambari females that were in the reproductive stage. The extraction and separation of polar and neutral fractions and the saponification and methylation of lipids were performed and analysed in the muscles, livers and ovaries to determine the compositions of the fatty acids via gas chromatography. Regardless of habitat, lambaris mobilize large amounts of fat to the ovaries during the reproductive period, in addition to highly unsaturated fatty acids, such as arachidonic, eicosapentaenoic and docosahexaenoic acids. The wild lambaris were observed to contain higher levels of various fatty acids, including linoleic acid, which is an essential fatty acid. The most abundant fatty acid that was observed in the commercial diet was linoleic acid, which was supplied in all fish farmed tissues. The commercial diet has low AA, EPA and DHA contents, and, higher levels of these fatty acids were recorded in the tissues of farmed lambari, which suggests that this species are able to elongate and desaturate precursors, linoleic and linolenic acids, into highly unsaturated fatty acids. (AU)

• Processo FAPESP: 07/53876-0 - Desempenho reprodutivo de lambaris (Astyanax altiparanae) alimentados com óleos obtidos a partir de resíduos de peixe
• Beneficiário: Ligia Uribe Gonçalves
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto