Fish oil replacement with different vegetable oils in Murray cod: Evidence of an “omega-3 sparing effect” by other dietary fatty acids

Turchini, Giovanni M.; Francis, David S.; Senadheera, Shyamalie D.; Thanuthong, Thanongsak; Silva, S De

doi:10.1016/j.aquaculture.2011.02.016

Cited by 167 publications

(148 citation statements)

References 31 publications

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“…Clearly the fish in this study achieved sufficient biological turnover as evidenced by the whole fish and flesh fatty acid profiles mirroring the diets similar to that of other studies Tu et al, 2013;Turchini et al, 2011). Moreover, past studies have demonstrated that fatty acid profiles of fish can be manipulated in as little as two weeks (Castell et al, 1994;Skonberg et al, 1994).…”

Section: Growth Performance and Feed Utilisationsupporting

confidence: 52%

“…Possible mechanisms underpinning this selective retention among species may be attributable to the high specificity of fatty acyl transferases for DHA (Bell et al, 2001) and reduced catabolism due to the complex peroxisomal β-oxidation required for the DHA molecule (Tocher, 2003). Furthermore, this study showed that OLA and palmitic acid (16:0) dominated within the flesh and these FA are known to be heavily oxidised as energy substrates, potentially promoting more efficient accumulation of other FA (Codabaccus et al, 2012;Turchini et al, 2011).…”

Section: Fillet Fatty Acid Compositionmentioning

confidence: 88%

“…Similarly, the fillet DHA concentration also decreased linearly with increasing fish oil replacement, however it was selectively retained in the meat at levels higher than the dietary supply. Similarly, studies have shown that fillet DHA levels in Atlantic salmon (Bell et al, 2001;Bell et al, 2002), European seabass (Mourente and Bell, 2006), gilthead sea bream and Murray cod (Turchini et al, 2011) can be elevated relative to the diet. Possible mechanisms underpinning this selective retention among species may be attributable to the high specificity of fatty acyl transferases for DHA (Bell et al, 2001) and reduced catabolism due to the complex peroxisomal β-oxidation required for the DHA molecule (Tocher, 2003).…”

Section: Fillet Fatty Acid Compositionmentioning

confidence: 99%

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Marginal efficiencies of long chain-polyunsaturated fatty acid use by barramundi (Lates calcarifer) when fed diets with varying blends of fish oil and poultry fat

et al. 2015

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An experiment was conducted with barramundi (Lates calcarifer) juveniles to examine the marginal efficiency of utilisation of long chain-polyunsaturated fatty acids (LC-PUFA). A series of five diets with blends of fish (anchovy) oil and poultry fat (F100:P0, F60:P40, F30:P70, F15:P85, F0:P100) were fed to 208 ± 4.1 g fish over a 12-week period. The replacement of fish oil with poultry fat had no impact on growth performance (average final weight of 548.3 ± 10.2 g) or feed conversion (mean = 1.14 ± 0.02). Analysis of the whole body composition showed that the fatty acid profile reflected that of the fed diet. However it was also shown that there was a disproportional retention of some fatty acids relative to others (notably LOA,. By examining the body mass independent retention of different fatty acids with differential levels of intake of each, the marginal efficiencies of the use these nutrients by this species were able to be determined. The differential retention of fatty acids in the meat was also examined allowing the determination of oil blending strategies to optimise meat n-3 LC-PUFA levels.

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Section: Growth Performance and Feed Utilisationsupporting

confidence: 52%

Section: Fillet Fatty Acid Compositionmentioning

confidence: 88%

Section: Fillet Fatty Acid Compositionmentioning

confidence: 99%

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Marginal efficiencies of long chain-polyunsaturated fatty acid use by barramundi (Lates calcarifer) when fed diets with varying blends of fish oil and poultry fat

et al. 2015

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“…However, replacement of FO with LO has also led to decreased concentration of n-3 highly unsaturated fatty acids in fish flesh especially when higher dietary linseed oil were fed (Menoyo et al, 2005;Turchini et al, 2011). On the contrary, it has been shown that when substituted with sunflower oil, dietary linseed oil can increase the EPA/DHA content of Nile tilapia fillets (Justi et al, 2003;Visentainer et al, 2005).…”

Section: Introductionmentioning

confidence: 95%

Dietary effect of varying linseed oil compositions on growth response, survival and polyunsaturated fatty acid levels in Tilapia (Oreochromis niloticus)

Omolo¹,

Onyango²,

Magoma³

et al. 2017

Int. J. Fish. Aquac.

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The present study evaluated the impact of varying dietary linseed oil composition on growth, survival and tissue polyunsaturated fatty acids (PUFA) profiles in Nile tilapia (Oreochromis niloticus). Five isonitrogenious diets with varying linseed and sunflower oil concentrations were formulated and fish fed twice daily to for 3 months. Commercial diet was used as a control in triplicate tanks set for each diet treatment. Growth parameters were measured from changes in body weight and length. A 75:25 ratio of sunflower oil to linseed oil gave a better survival and specific growth rate than 100% linseed oil or 100% sunflower oil. Tissue PUFA composition were determined using gas chromatography. High dietary linseed oil composition (100%) resulted into significantly high (P<0.05) total n3 fatty acids (9.9-25%) and DHA (1.8-7.9%) in muscles whereas liver n3 fatty acids and DHA composition ranged between 9.3-25.5 and 0.7-2.6%, respectively. Muscle and liver n3/n6 ratio ranged between 0.7-2.2 and 0.7-2.6 while tissue arachidonic acid (ARA 20.4 n6) content ranged between 2.6-3.5% in muscles and 3.4-4.5% in the liver. ARA 20.4 n6 values were low relative to the dietary precursor, linoleic acid, LA, 18.2 n6. Fatty acid deposition in the tissues increased with the feeding period with the third feeding month recording significantly higher DHA, total n3 and n3/n6 ratio. Based on the result, dietary linseed oil > 50% reduced growth and survival rate in tilapia, however, it increased tissue accumulation of essential fatty acids which also increased with the length of feeding period.

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“…However, static world capture fisheries, natural environmental impacts such as El Niño events, and competition for using marine derivatives products in the terrestrial animal feed industries and human nutrition have also led to inflated FO prices and demands. In addition, the progressive growth of aquaculture industry, as well as using energy-dense diets in carnivorous fish production have further exacerbated this problem [89,134]. If EFA requirements are met, a large fraction (60-75%) of FO can be substituted with vegetable oils (VO) or terrestrial animal fats (i.e., beef tallow, poultry fat, lard) without significantly affecting growth and FCR [89,135,136].…”

Section: Alternative Lipid Sourcesmentioning

confidence: 99%

Macronutrient Requirements of Silvery-Black Porgy (Sparidentex hasta): A Comparison with Other Farmed Sparid Species

Mozanzadeh¹,

Marammazi²,

Yaghoubi³

et al. 2017

Fishes

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Silvery-black porgy (Sparidentex hasta) is recognized as one of the most promising fish species for aquaculture diversification in the Persian Gulf and the Oman Sea regions. In this regard, S. hasta has received considerable attention, and nutritional studies focused on establishing the nutritional requirements for improving diet formulation have been conducted during recent years. Considering the results from different dose-response nutritional studies on macronutrient requirements conducted in this species, it can be concluded that diets containing ca. 48% crude protein, 15% crude lipid, 15% carbohydrates and 20 KJ g −1 gross energy are recommended for on-growing S. hasta juveniles. In addition, the optimum essential amino acid profile for this species (expressed as g 16 g N −1 ), should be approximately arginine 5.3, lysine 6.0, threonine 5.2, histidine 2.5, isoleucine 4.6, leucine 5.4, methionine + cysteine 4.0 (in a diet containing 0.6 cysteine), phenylalanine + tyrosine 5.6 (in a diet containing 1.9 tyrosine), tryptophan 1.0 and valine 4.6. Moreover, the optimum dietary n-3 long chain polyunsaturated fatty acids and soybean lecithin are recommended to be 0.8% and 6%, respectively. The maximum replacement of fish meal with soy protein is recommended to be between 16.5% and 27.3%. In addition, different vegetal oil sources are also recommended for partial and almost complete replacement of fish oil in diets. Although the nutritional requirements in terms of macronutrients have been established under laboratory conditions, the analysis of the available literature indicate that future studies need to be conducted using a more holistic approach under intensive farming conditions in which different nutrients or additives need to be tested under different rearing conditions for refining nutrient requirements in this species.

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Fish oil replacement with different vegetable oils in Murray cod: Evidence of an “omega-3 sparing effect” by other dietary fatty acids

Cited by 167 publications

References 31 publications

Marginal efficiencies of long chain-polyunsaturated fatty acid use by barramundi (Lates calcarifer) when fed diets with varying blends of fish oil and poultry fat

Marginal efficiencies of long chain-polyunsaturated fatty acid use by barramundi (Lates calcarifer) when fed diets with varying blends of fish oil and poultry fat

Dietary effect of varying linseed oil compositions on growth response, survival and polyunsaturated fatty acid levels in Tilapia (Oreochromis niloticus)

Macronutrient Requirements of Silvery-Black Porgy (Sparidentex hasta): A Comparison with Other Farmed Sparid Species

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