Soybean and linseed oil in replacement of fish oil in diets for female lambari Astyanax altiparanae Garutti & Britski, 2000

• Pontes, Marcelo D. ^[2] ; Campelo, Daniel A.V. ^[3] ; Ferraz, Renato B. ^[4] ; Zuanon, Jener A.S. ^[4] ; Furuya, Wilson M. ^[1] ; Salaro, Ana Lucía ^[4]
  1. [1] Universidade Estadual de Ponta Grossa

     Universidade Estadual de Ponta Grossa

     Brasil

     
  2. [2] FIPERJ
  3. [3] UFPA
  4. [4] UFV

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• Localización: Latin American Journal of Aquatic Research, ISSN-e 0718-560X, ISSN 0716-1069, Vol. 47, Nº. 2, 2019, págs. 260-269
• Idioma: inglés
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  • This study aimed to evaluate the effect of different proportions of soybean and linseed oil to replace fish oil in diets for female lambari (Astyanax altiparanae). A completely randomized design with seven treatments and five replicates was used. The treatments consisted of a diet containing fish oil and six diets containing different proportions of soybean oil (S) and linseed oil (L), 10S/0L, 8S/2L, 6S/4L, 4S/6L, 2S/8L and 0S/10L. The fish that received the highest proportion of linseed oil (0S/10L) had the lowest crude lipid in their carcasses. The highest linolenic acid (18:3n3) concentrations were detected in the carcasses of fish fed diets with high proportions of linseed oil (4S/6L, 2S/8L, and 0S/10L). The highest n6/n3 ratios corresponded to the carcasses of fish fed diets containing the lowest proportions of linseed oil (10S/0L and 8S/2L). The highest levels of 20:5n3 (eicosapentaenoic acid [EPA]), 22:6n3 (docosahexaenoic acid [DHA]) and ΣEPA+DHA occurred in fish fed diets containing fish oil. Among the fish that received diets with vegetable oils, the ΣEPA+DHA was higher in the fish of the treatments 4S/6L, 2S/8L and 0S/10L. Diets supplemented with a 4S/6L proportion provide adequate deposition of the n3 fatty acids series in the lambari carcass.