Fatty acid composition of Oncorhynchus mykiss during embryogenesis and other developmental stages

Zengi̇n, Hatayi; Akpınar, Mehmet Ali

doi:10.2478/s11756-006-0056-2

Cited by 12 publications

(8 citation statements)

References 23 publications

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“…These results indicating LC‐PUFA are oxidized more quickly than other FA classes during embryogenesis in this species. In contrast, Zengin and Akpinar () reported that SFA is oxidized more quickly than PUFA during embryogenesis of O. mykiss . These discrepancies between our study and findings of the above‐mentioned research might be related to differences in water temperature, brood stocks nutritional history, hatchery condition, or differences in subspecies.…”

Section: Discussionmentioning

confidence: 90%

Replacing Dietary Fish Oil with Vegetable Oil Blends in Female Rainbow Trout Brood Stock Does Not Affect Breeding Quality

Agh

Jafari

Jalili

et al. 2019

Lipids

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To determine the effects of replacing fish oil (FO) with a mixture of vegetable oils (VO) in plant protein‐rich diets on reproductive performance, the fatty acid profile of embryos as well as health indices of female rainbow trout (Oncorhynchus mykiss) brooders (initial mean body weight, 1.8 ± 0.1 kg), a 3‐month feeding trial was conducted. Four isoproteic (ca. 42%) and isoenergetic (ca. 20 MJ/kg) diets were formulated in which 50% (FO50/VO50), 75% (FO25/VO75), and 100% (VO100) of FO were replaced by a mixture of VO, whereas the control diet (FO100) was prepared with FO as the major source of lipid. Fish fed the VO100 had the lowest fertilization (73.0 ± 2.5%), survival at eyed‐embryo stage (62.5 ± 5.0%), and hatching rate (56.0 ± 4.7%) rates. Brood fish fed the FO50/VO50, FO25/VO50, and VO100 diets had higher levels of saturated and monounsaturated fatty acids in embryos in comparison with fish fed FO100 diet. The levels of docosahexaenoic acid of embryos gradually decreased during embryogenesis in all treatments, whereas the concentrations of eicosapentaenoic acid was greatly increased at hatching day (35 days after spawning). Regarding serum biochemical parameters, fish fed the VO100 diet had the highest serum glucose, cholesterol, and low‐density lipoprotein levels. The results of the current study revealed that replacement of dietary FO with a mixture of VO up to 75% did not have any adverse effects on reproductive performance and health indices of O. mykiss females.

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Section: Discussionmentioning

confidence: 90%

Replacing Dietary Fish Oil with Vegetable Oil Blends in Female Rainbow Trout Brood Stock Does Not Affect Breeding Quality

Agh

Jafari

Jalili

et al. 2019

Lipids

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“…This FA was bioconcentrated in liver tissue relative to the diet and thus should have been available for vitellogenesis. Fernández-Palacios et al (1995) noted that EPA concentration was more diet dependent than DHA in eggs of S. aurata, and other authors have noted that DHA is the most highly conserved q-3 LC-PUFA in fishes (Zengin and Akpinar 2006;Sewall and Rodgveller 2009;Tocher 2010). Additionally, Fuiman and Ojanguren (2011) found that only ARA and DHA were significantly correlated with larval quality.…”

Section: Discussionmentioning

confidence: 86%

Diet-Induced Fatty Acid Variation in Critical Tissues of a Spawning Estuarine Fish and Consequences for Larval Fitness

Patterson¹,

Green²

2014

Physiological and Biochemical Zoology

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Freshwater and marine fishes exhibit a dichotomy in biosynthesis of long-chain polyunsaturated fatty acids (LC-PUFAs) from shorter-chain precursors. Marine species generally lack this ability due to deficiencies in requisite desaturase or elongase enzymes. Gulf killifish Fundulus grandis is a euryhaline cyprinodont whose fatty acid (FA) dynamics have not been previously examined. We utilized experimental variations in exogenous FAs available to spawning F. grandis in order to construct a multitissue evaluation of FA allocation and quantify effects on reproductive output and offspring fitness. No significant decrease in fecundity occurred in animals consuming low levels of LC-PUFAs, although embryo viability rates were affected. Maternal dietary FA variation did produce differences in starvation tolerance, hypoosmoregulatory ability, and acute thermal stress tolerance for larvae. These variations occurred at elevated salinities and temperatures seldom if ever encountered by F. grandis in culture or natural environments and are unlikely to affect larval survival in these settings. FA composition of eggs and tissues from spawning females suggested potential biosynthesis of LC-PUFAs from shorter-chain precursors in F. grandis. Results of this study suggest that F. grandis possesses physiological mechanisms allowing maintenance of reproductive function when subjected to dietary deficiencies in FAs generally considered essential for marine fishes.

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“…Para estos ácidos en particular, o bien no se registran cambios significativos en cantidad a través del desarrollo hasta la etapa de alevinos comiendo (24), o tienden a permanecer en cantidades relativamente estables durante el mismo periodo (28). Los PUFA de contenido bajo (< 2,5%) fueron C18:3n-6, C18:3n-3, C20:2, C20:3n-6, C20:3n-3 y C22:5n-3.…”

Section: Discussionunclassified

“…Halüloúlu et ál. (24) coinciden en la interpretación aun cuando la variación que detectan particularmente para el C16, significativamente creciente a través del tiempo, no es consecuente con la afirmación; una tendencia similar, pero no significativa, registran Zengin y Akpinar (28). Por el contrario, conforme avanza el desarrollo embrionario la disminución en el contenido del ácido oleico es evidente, lo que confirma su importante consumo en estas etapas (24).…”

Section: Discussionunclassified

Composición de ácidos grasos en ovas de trucha arco iris (Oncorhynchus mykiss, Walbaum, 1792)

Puccini¹,

Parra²,

Gonzalez³

2012

Rev. Med. Vet.

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ResumenEn este artículo se analizan con parámetros de composición 58 puestas de trucha arcoiris obtenidas, manejadas y monitoreadas individualmente en desempeño desde la fertilización hasta finalizar la etapa de reabsorción de vesícula. Además de los valores reproductivos, el contenido de ácidos grasos en las ovas se determinó en fresco, mediante cromatografía de gases. En el perfil medio se destacan los ácidos palmítico (C16), oleico (C18:1n-9) y docosahexaenoico (C22:6n-3) como los más representativos, con casi el 60% del total y, en general, en concentraciones estables entre las hembras. Tanto para cada ácido determinado como para el conjunto de contenidos integrados de las series n-3 y n-6, y los colectivos de saturados (SAF), monoinsaturados (MUFA) y poliinsaturados (PUFA), se define un patrón de composición similar al reportado para la especie en otros esquemas de manejo y bajo regímenes nutricionales variables. Se analizó la condición conservativa en la incorporación de ácidos grasos al huevo, y se discutió su utilidad como posibles definitorios de calidad, teniendo como referente la alta variabilidad registrada en la supervivencia al final del proceso de incubación.Palabras clave: ácidos grasos, calidad del huevo, composición del huevo, Oncorhynchus mykiss. Fatty Acid Composition in Rainbow Trout Eggs (Oncorhynchus mykiss, Walbaum, 1792) AbstractThis article analyzes, with composition parameters, 58 rainbow trout egg-layings obtained, handled and monitored individually in performance from their fertilization until the end of the gallbladder reabsortion phase. Aside from the reproductive values, the content of fatty acids in the eggs was determined in fresh conditions through gas chromatography. The average profile highlights the palmitic acid (C16), oleic acid (C18:1n-9) and docosahexaenoic acid (C22:6n-3), as the most representative, with almost 60% of the total and, in general, in stable concentrations among females. Both for each determined acid and for the suite of integrated series n-3 and n-6, and the groups of saturated (SAF), monounstaturated (MUFA) and polyunsaturated (PUFA), a pattern of similar composition to the one reported is defined for the species in other management schemes and under varying nutritional regimes. The conservative condition was analyzed in the incorporation of fatty acids into the egg and its usefulness as possible quality definers was discussed, using the high variability recorded in survival at the end of the incubation process as reference.

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Fatty acid composition of Oncorhynchus mykiss during embryogenesis and other developmental stages

Cited by 12 publications

References 23 publications

Replacing Dietary Fish Oil with Vegetable Oil Blends in Female Rainbow Trout Brood Stock Does Not Affect Breeding Quality

Replacing Dietary Fish Oil with Vegetable Oil Blends in Female Rainbow Trout Brood Stock Does Not Affect Breeding Quality

Diet-Induced Fatty Acid Variation in Critical Tissues of a Spawning Estuarine Fish and Consequences for Larval Fitness

Composición de ácidos grasos en ovas de trucha arco iris (Oncorhynchus mykiss, Walbaum, 1792)

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