Rapeseed oil as an alternative to marine fish oil in diets of post-smolt Atlantic salmon (Salmo salar): changes in flesh fatty acid composition and effectiveness of subsequent fish oil “wash out”

Bell, J. Gordon; McGhee, Fiona; Campbell, Patrick; Sargent, J. R.

doi:10.1016/s0044-8486(02)00462-3

Cited by 262 publications

(237 citation statements)

References 23 publications

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“…Similar results have been found for turbot fed a soybean oil containing diet after a re-feeding period of 8 weeks with a 100% FO diet, with values of LA higher in muscle phospholipids, denoting the poor utilization of this fatty acid even in a species able to elongate LA to 20:2n-6 (Regost et al, 2003a). Atlantic salmon fed on a rapeseed oil containing diet had higher LA levels after 12 weeks of re-feeding period with 100% FO diet (Bell et al, 2003).…”

Section: Discussionmentioning

confidence: 94%

“…However, the use of rapeseed oil at 60% substitution over long periods affected European sea bass growth, in contrast with the effect of inclusion of this oil over shorter periods for this species , or the use of this oil in diets for Atlantic salmon (Bell et al, 2003). In addition, the use of 80% linseed oil for substitution of fish oil also seems to affect fish growth as described for other marine species such as gilthead sea bream (Izquierdo et al, in press), denoting the low availability of these fish species to elongate and desaturate fatty acids (Mourente and Tocher, 1993).…”

Section: Discussionmentioning

confidence: 95%

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Growth, feed utilization and flesh quality of European sea bass (Dicentrarchus labrax) fed diets containing vegetable oils: A time-course study on the effect of a re-feeding period with a 100% fish oil diet

Montero¹,

Robaina²,

Caballero³

et al. 2005

Aquaculture

219

155

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In the present study 75 g European sea bass were fed for 8 months with different diets (22% dietary lipid content) containing vegetable oils at two inclusion levels. The control diet (Diet FO) contained anchovy oil as the only lipid source; in diets 60RO, 60LO, and 60SO of fish oil was substituted by rapeseed, linseed or soybean oils, respectively; finally, in diet 80LO, 80% of the fish oil was substituted by linseed oil. Fish were fed to apparent satiation three times a day. All fish were individually weighed once per month. Lipid and fatty acid composition of diets and fish fillets were determined at the beginning, middle and end of the experimental period. Once the commercial size was reached, all fish were fed a 100% FO containing diet during 150 days.No significant differences were found in feed intake. Fish fed the diets containing 80% linseed oil or 60% rapeseed oil had significant ( P b 0.05) lower growth. Flesh fatty acid composition of total lipids reflected the fatty acids in the diets. Flesh contents of n-3 HUFA were reduced to about 45% in fish fed diets 60RO, 60LO or 60SO and to about 50% in diet 80LO. This reduction was markedly higher for EPA than for DHA. High levels of oleic, linoleic and linolenic acids were found in fish fed RO, SO and LO respectively.After 150 days of re-feeding period with a 100% fish oil diet, DHA levels were restored in those fish previously fed diets containing vegetable oils, but EPA levels remained lower when compared with fish fed 100% FO diet. Flesh content of linoleic and linolenic acids remained higher in those fish previously fed soybean and linseed oil containing diets, respectively.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 95%

Growth, feed utilization and flesh quality of European sea bass (Dicentrarchus labrax) fed diets containing vegetable oils: A time-course study on the effect of a re-feeding period with a 100% fish oil diet

Montero¹,

Robaina²,

Caballero³

et al. 2005

Aquaculture

219

155

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“…Therefore, productive performance of Nile tilapia supplemented with (Bell et al, 2003;Mourent et al, 2005;Vargas et al, 2008).…”

Section: Resultsmentioning

confidence: 99%

Kinetics of chronic inflammation in Nile tilapia fed n‑3 and n‑6 essential fatty acids

Sakabe

Moraes

Belo

et al. 2013

Pesq. agropec. bras.

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-The objective of this work was to investigate the effect of dietary supplementation with essential fatty acids on the kinetics of macrophage accumulation and giant cell formation in Nile tilapia (Oreochromis niloticus). The supplementation sources were soybean oil (SO, source of omega 6, n-6) and linseed oil (LO, source of omega 3, n-3), in the following proportions: 100% SO; 75% SO + 25% LO; 50% SO + 50% LO; 25% SO + 75% LO; and 100% LO (four replicates per treatment). After a feeding period of three months, growth performance was evaluated, and glass coverslips were implanted into the subcutaneous connective tissue of fish, being removed for examination at 2, 4, 6, and 8 days after implantation. Growth performance did not differ between treatments. Fish fed 100% linseed oil diet had the greatest macrophage accumulation and the fastest Langhans cell formation on the sixth day. On the eighth day, Langhans cells were predominant on the coverslips implanted in the fish feed 75 and 100% linseed oil. n-3 fatty acids may contribute to macrophage recruitment and giant cell formation in fish chronic inflammatory response to foreign body.Index terms: Oreochromis niloticus, foreign body, growth performance, inflammatory response, lipid nutrition. Cinética da inflamação crônica em tilápia-do-nilo alimentada com ácidos graxos essenciais n-3 e n-6Resumo -O objetivo deste trabalho foi investigar o efeito da suplementação alimentar com ácidos graxos essenciais sobre a cinética do acúmulo de macrófagos e a formação de células gigantes em tilápia-do-nilo (Oreochromis niloticus). As fontes de suplementação foram óleo de soja (OS, fonte de ômega 6, n-6) e óleo de linhaça (OL, fonte de ômega 3, n-3), nas seguintes proporções: 100% OS; 75% OS + 25% OL; 50% OS + 50% OL; 25% OS + 75% OL; e 100% OL (quatro repetições por tratamento). Após período de alimentação de três meses, foi avaliado o desempenho produtivo, e lamínulas de vidro foram implantadas no tecido subcutâneo dos peixes, as quais foram removidas para exame aos 2, 4, 6 e 8 dias após o implante. O desempenho produtivo não diferiu entre os tratamentos. Os peixes alimentados com 100% de óleo de linhaça tiveram maior acúmulo de macrófagos e formação mais rápida de células de Langhans, no sexto dia. No oitavo dia, as células de Langhans foram predominantes nas lamínulas implantadas nos peixes alimentados com 75 e 100% de óleo de linhaça. Os ácidos graxos n-3 podem contribuir para o recrutamento de macrófagos e a formação de células gigantes, na resposta inflamatória crônica a corpo estranho em peixes.Termos para indexação: Oreochromis niloticus, corpo estranho, desempenho produtivo, resposta inflamatória, nutrição lipídica.

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“…É fundamental considerar a relação proteína/energia para obtenção de bom Tabela 1 -Composição percentual dos ingredientes das rações experimentais (matéria natural) desempenho dos animais (Page & Andrews, 1973;Chou & Shiau 1996;Lin et al, 1997;Meurer et al, 2002;Bell et al, 2003;Torstensen et al, 2004). Os resultados obtidos neste trabalho demonstraram que, entre as rações avaliadas, a que apresentou a melhor relação proteína/energia para a tilápia-do-nilo (O. niloticus) nesta fase foi a ração com 3.300 kcal de ED/kg com 85,49 mg de PD/kcal de ED.…”

Section: Resultsunclassified

Energia digestível para larvas de tilápia-do-nilo (Oreochromis niloticus) na fase de reversão sexual

et al. 2005

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RESUMO -Este trabalho foi realizado com o objetivo de se avaliar o efeito de diferentes níveis de energia digestível na ração sobre o desempenho de larvas de tilápia-do-nilo (Oreochromis niloticus), durante a fase de reversão sexual. Foram utilizadas 375 larvas com peso e comprimento inicial de 21,0 ± 4,0 mg e 11,9 ± 7,2 mm, respectivamente, distribuídos em 25 aquários com capacidade de 30 L, em um delineamento experimental inteiramente casualizado, composto por cinco tratamentos e cinco repetições, em que a unidade experimental foi considerada como um aquário contendo 15 larvas. As rações foram formuladas de modo a conterem 3.300; 3.525; 3.750; 3.975 e 4.200 kcal/kg de energia digestível e serem isoprotéicas (38,6% de proteína digestível). Os animais foram alimentados ad libitum cinco vezes ao dia. Ao final do experimento, foram analisadas as médias de peso final (PF), sobrevivência (SO), fator de condição (FC) e comprimento final (CF). O aumento de ED nas rações proporcionou redução linear no PF e CF dos peixes. Não foram observadas diferenças na SO e FC dos peixes nos diferentes tratamentos. Conclui-se que o aumento nos níveis de energia digestível em rações para larvas de tilápia-do-nilo durante a reversão sexual proporciona redução no desempenho.Palavras-chave: desempenho, energia digestível, exigência nutricional, larvicultura, peixes, tilápia Digestible Energy for Nile Tilapia (Oreochromis niloticus) Larvae in the SexualReversion PhaseABSTRACT -This experiment was conducted to evaluate different levels of digestible energy on the performance of Nile tilapia larvae (Oreochromis niloticus) during the sexual reversion phase. Three hundred and seventy-five larvae with initial average length and weight of 21.0±4.0 mg and 1.19±0.72 cm, respectively, were allotted to 25 30L-aquarium. A completely randomized design with five treatments and five replicates was used. The aquarium with 15 larvae was the experimental unit. The diets were formulated to contain levels of 3,300, 3,525, 3,750, 3,975, and 4,200 kcal/kg of digestible energy and to be isoprotein (38.6% digestible protein). The animals were fed ad libitum five times a day. At the end of the experiment, the averages of weight (PF), survival rate (SO), condition factor (FC) and length (CF) were analyzed. Linear reduction of fishes PF and CF, as the dietary digestible energy levels increased, was observed. No differences on fish SO and FC of different treatments were observed. Deleterious effects on performance due to the increasing dietary digestible energy levels were noticed for Nile tilapia larvae during the sexual reversion.

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Rapeseed oil as an alternative to marine fish oil in diets of post-smolt Atlantic salmon (Salmo salar): changes in flesh fatty acid composition and effectiveness of subsequent fish oil “wash out”

Cited by 262 publications

References 23 publications

Growth, feed utilization and flesh quality of European sea bass (Dicentrarchus labrax) fed diets containing vegetable oils: A time-course study on the effect of a re-feeding period with a 100% fish oil diet

Growth, feed utilization and flesh quality of European sea bass (Dicentrarchus labrax) fed diets containing vegetable oils: A time-course study on the effect of a re-feeding period with a 100% fish oil diet

Kinetics of chronic inflammation in Nile tilapia fed n‑3 and n‑6 essential fatty acids

Energia digestível para larvas de tilápia-do-nilo (Oreochromis niloticus) na fase de reversão sexual

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