Author(s): Higuchi, Leticia Hayashi ; Feiden, Aldi ; Matsushita, Makoto ; Santarosa, Mayara ; Zanqui, Ana Beatriz ; Bittencourt, Fábio [UNESP] ; Boscolo, Wilson Rogério
Date: 2014
Persistent ID: http://hdl.handle.net/11449/75878
Origin: Oasisbr
Subject(s): Incorporation; Linseed; Lipid source; Requirement
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The present work aimed to quantify the fatty acids in total lipids of Nile tilapia fingerlings (Oreochromis niloticus) fed with different sources of vegetable oils mechanically extracted. Were used 320 tilapias (O. niloticus) with average initial weight and average total initial length of 2.55±0.57 g and 5.59±0.43 cm, respectively, fed for a period of 60 days, in a randomized block design with eight treatments and four replications. The diets were prepared with 320 g/kg crude protein and 3.500 kcal of digestible energy per kg of feed enriched with eight different oils: sunflower, canola, sesame, linseed, peanut, Para's nut soy and macadamia, with an addition of 4%. Among the major fatty acids the oleic, palmitic, linolenic and linoleic were obtained in higher concentration (mg/g of LT) in fish from all treatments. The sums of polyunsaturated fatty acids after 60 days of cultivation had increased in all treatments compared to the 30 days of the experiment. This is due to the addition of oils with high contents of n-6 and n-3 fatty acids. The fatty acids in the carcass are a reflection of the energy source of oil used. As a conclusion it is recommended the use of linseed oil in the diet of tilapia fingerlings due to great improvement in the relationship between n-6/n-3.
Bióloga Msc. em Recursos Pesqueiros e Engenharia de Pesca da Universidade Estadual Do Oeste Do Paraná UNIOESTE, Toledo-PR
Depto Do Centro de Engenharias e Ciências Exatas UNIOESTE Campus Toledo, Toledo, PR
Depto de Química Do Centro de Ciências Exatas Universidade Estadual de Maringá UEM, Maringá, PR
Discente de Química UEM, Maringá, PR
Química Discente de Mestrado em Química UEM, Maringá, PR
Zootecnista Dr. em Aqüicultura Universidade Estadual Paulista Júlio de Mesquita Filho, UNESP, Jaboticabal, SP
Zootecnista Dr. em Aqüicultura Universidade Estadual Paulista Júlio de Mesquita Filho, UNESP, Jaboticabal, SP
