Effect of coconut oil and tricaprylin vs. triolein on survival, growth and fatty acid composition of common carp (Cyprinus carpio L.) larvae

Fontagné, Stéphanie; Pruszynski, T; Corraze, Généviève; Bergot, Pierre

doi:10.1016/s0044-8486(99)00193-3

Cited by 40 publications

(42 citation statements)

References 26 publications

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“…Younger larvae appeared more sensitive to coconut oil, given that in 52-d-old fish, diet C15 resulted in a significantly lower growth than diets F15 and T15, but, contrary to the first experiment, growth was not significantly different from the diets F7.5, T7.5, and C7.5. Finally, it should be noted that the lower growth obtained with the C15 diet was not associated with a lower survival of 52-d-old sea bass, as obtained with other fish larvae fed high levels of MCFA (21)(22)(23). However, just as with the detrimental effects on growth, mortality has been related to high levels of 8:0 in the diet and not to dietary coconut oil.…”

Section: Discussionmentioning

confidence: 86%

“…ferences, size (i.e., "dilution" of dietary FA by endogenous FA), stage of development, and energetic needs (21,22,24,25). In the present study, total FA levels of 2.5% of caprylic acid (8:0), 4.0% of capric acid (10:0), and 36.8% of lauric acid (12:0) were associated with a significantly decreased growth of sea bass larvae, indicating that they may be at least as vulnerable to dietary MCT as carp or red drum.…”

Section: Discussionmentioning

confidence: 99%

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Dietary TAG source and level affect performance and lipase expression in larval sea bass (Dicentrarchus labrax)

Morais

Cahu

Zambonino-Infante

et al. 2004

Lipids

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The influence of dietary TAG source (fish oil, triolein, and coconut oil) and level (7.5 and 15% of the diet) on growth, lipase activity, and mRNA level was studied in sea bass larvae, from mouth opening until day 24 and from day 37 to 52. Fish oil and triolein induced better growth in both experiments, this being significant at a higher dietary level. Coconut oil significantly decreased growth at the higher level, possibly as the result of an excessive supply of medium-chain TAG. Growth was not related to lipase specific activity, suggesting a production in excess to dietary needs. Body lipid content was positively related to dietary lipid level and was affected by lipid quality. In addition, larval FA composition generally reflected that of the diet. The source of dietary lipid, but not the quantity, was shown to affect lipase activity significantly. Coconut oil diets induced the highest lipase activity, whereas the effect of fish oil was age dependent-it was similar to coconut oil at day 24 but induced the lowest lipase activity in 52-d-old larvae. The differential lipase response was probably caused by differences in the FA composition of the diet, related to the specificity of lipase toward FA differing in chain length and degree of saturation. No significant differences were found in lipase/glyceraldehyde-3-phosphate dehydrogenase mRNA, which suggests the existence of a posttranscriptional regulation mechanism.

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Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Dietary TAG source and level affect performance and lipase expression in larval sea bass (Dicentrarchus labrax)

Morais

Cahu

Zambonino-Infante

et al. 2004

Lipids

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“…Feeding MCT did not affect greatly the fatty acid composition of fish tissues. In sea bass, there was only very low deposition (1-3%) of MCT and, in carp larvae, deposition of 6:0 was not observed but there was significant deposition of both 8:0 and 10:0 in neutral lipids but not polar lipid, with 8:0 also being significantly elongated to 10:0 (Fontagne et al, 1999(Fontagne et al, , 2000a. Therefore, there is some evidence that MCT may be potentially useful as alternative energy sources in fish and may also have a beneficial effect in lowering body fat levels.…”

Section: Functionsmentioning

confidence: 86%

“…Rather it may be a consequence of the unusual structure of the 2-acyl monoacylglycerols produced during digestion of MCT with short chain fatty acids which may have different physical properties. Growth and survival of carp larvae was reduced by feeding 8:0 (tricaprylin) in comparison with 12:0 (in the form of coconut oil) and triolein (Fontagne et al, 1999). In another trial, both 6:0 (tricaproin) and 8:0 initially stimulated growth in carp larvae in the first week but later 8:0 decreased growth compared to triolein (Fontagne et al, 2000a), and survival was decreased by feeding 8:0 compared to the other MCT (Fontagne et al, 2000b).…”

Section: Functionsmentioning

confidence: 92%

Metabolism and Functions of Lipids and Fatty Acids in Teleost Fish

Tocher

2003

Reviews in Fisheries Science

2,042

1,718

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Lipids and their constituent fatty acids are, along with proteins, the major organic constituents of fish, and they play major roles as sources of metabolic energy for growth including reproduction, and movement including migration. Furthermore, the fatty acids of fish lipids are rich in ω3 long chain, highly unsaturated fatty acids (n-3 HUFA) that have particularly important roles in animal nutrition, including fish and human nutrition, reflecting their roles in critical physiological processes. Indeed, fish are the most important food source of these vital nutrients for man Thus, the long standing interest in fish lipids stems from their abundance and their uniqueness. This review attempts to summarise our present state of knowledge of various aspects of the basic biochemistry, metabolism and functions of fatty acids, and the lipids they constitute part of, in fish, seeking where possible to relate that understanding as much to fish in their natural environment as to farmed fish. In doing so, it highlights the areas that require to be investigated in greater depth and also the increasing application of molecular technologies in fish lipid metabolism which will fascilitate further advances through molecular biological and genetic techniques including genomics and proteomics.

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“…The response of the fish to MCT depends on the type of MCT administered. In carp larvae, tricaprylin (C 8 ) will reduce growth and survival at a 10% inclusion level (total lipid 24%) while this is not observed with coconut oil (mainly 12:0) or triolein (Fontagne et al 1999). At a 3% inclusion level both tricaprylin and tricaproin will enhance growth of carp larvae for the first week of feeding when compared to triolein (Fontagne et al 2000a).…”

Section: Energymentioning

confidence: 97%