Leaching properties of three different micropaticulate diets and preference of the diets in cod (Gadus morhua L.) larvae

Kvåle, A.; Yúfera, Manuel; Nygård, Einar; Aursland, Kjetil; Harboe, Torstein; Hamre, Kristin

doi:10.1016/j.aquaculture.2005.06.002

Cited by 71 publications

(63 citation statements)

References 29 publications

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“…So, while larvae do not possess the digestive machinery developed enough to utilize complex protein, a more soluble nitrogen form such as CAA, that would allow to finely tune dietary protein quality, is often easily lost by leaching (Kvale et al 2006(Kvale et al , 2007Nordgreen et al 2008;Yúfera et al 2002).…”

Section: Discussionmentioning

confidence: 99%

Dietary indispensable amino acids profile affects protein utilization and growth of Senegalese sole larvae

Canada

Engrola

Richard

et al. 2016

Fish Physiol Biochem

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In diet formulation for fish, it is critical to assure that all the indispensable amino acids (IAA) are available in the right quantities and ratios. This will allow minimizing dietary AA imbalances that will result in unavoidable AA losses for energy dissipation rather than for protein synthesis and growth. The supplementation with crystalline amino acids (CAA) is a possible solution to correct the dietary amino acid (AA) profile that has shown positive results for larvae of some fish species. This study tested the effect of supplementing a practical microdiet with encapsulated CAA as to balance the dietary IAA profile and to improve the capacity of Senegalese sole larvae to utilize AA and maximize growth potential. Larvae were reared at 19 °C under a co-feeding regime from mouth opening. Two microdiets were formulated and processed as to have as much as possible the same ingredients and proximate composition. The control diet (CTRL) formulation was based on commonly used protein sources. A balanced diet (BAL) was formulated as to meet the ideal IAA profile defined for Senegalese sole: the dietary AA profile was corrected by replacing 4 % of encapsulated protein hydrolysate by CAA. The in vivo method of controlled tube-feeding was used to assess the effect on the larvae capacity to utilize protein, during key developmental stages. Growth was monitored until 51 DAH. The supplementation of microdiets with CAA in order to balance the dietary AA had a positive short-term effect on the Senegalese sole larvae capacity to retain protein. However, that did not translate into increased growth. On the contrary, larvae fed a more imbalanced (CTRL group) diet attained a better performance. Further studies are needed to ascertain whether this was due to an effect on the voluntary feed intake as a compensatory response to the dietary IAA imbalance in the CTRL diet or due to the higher content of tryptophan in the BAL diet.

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Section: Discussionmentioning

confidence: 99%

Dietary indispensable amino acids profile affects protein utilization and growth of Senegalese sole larvae

Canada

Engrola

Richard

et al. 2016

Fish Physiol Biochem

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“…Physico-chemical characteristics of micro-diets such as color, shape, particle size, sedimentation rate or release of attractants can influence feed intake by very young fish (Saenz de Rodriganez et al, 2011). In addition, larvae have to be able to digest the particles and be able to absorb and assimilate the nutrients that must fit the requirement of the larvae (Kvale et al, 2006).…”

Section: Effect Of Feed Type On Weaning Post-larvaementioning

confidence: 99%

Effect of some rearing systems on growth and development of the Egyptian sole (Solea aegyptiaca Chabanaud, 1927) larvae.

Aljilany

Mohammed

Saleh

et al. 2016

Egypt. J. of Aquatic Biolo. and Fish.

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This study was conducted to evaluate the optimum salinity and temperature on growth and development of Solea aegyptiaca larvae and weaning feed type on growth of Solea aegyptiaca post-larvae. The first experiment was tested five different salinities (10, 15, 20, 25 and 30‰). The results found that, no significant difference in growth rate, but the best performance and survival rate of larvae was at salinity 20‰. The second experiment was tested eight different water temperature (16, 17, 18, 19, 20, 21, 22 and 23°C). The results showed that, the larvae under temperature 20 °C showed the highest growth rate, while the best survival rate was recorded at temperature 16 °C under experimental conditions. The growth rate for larvae has been increased gradually with increasing temperature until 20 °C then decreased, while survival rate was decreased gradually with increasing temperature. The third experiment was tested three different feed (Artemia (T 1 ), Artemia + artificial feed (T 2 ) and artificial feed (T 3 )) of Solea aegyptiaca post-larvae weaning. Results of growth performance parameters were highest with post-larvae fed on (T 1 ) compared to the other feeds (T 2 and T 3 ). Larvae fed on (T 1 and T 2 ) led to higher survival rate compared to fed on (T 3 ).

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“…In addition, the incorporation of a label in small particles of larval inert diets, in order to determine larval diet selection (i.e. feed intake) and nutrient utilisation, is technically difficult, and protein and AA leaching problems can easily occur (Kvåle et al 2006;López-Alvarado et al 1994;Nordgreen et al 2007;Yúfera et al 2002). Therefore, new methodologies need to be used in order to determine larvae diet selection (live prey or inert diet) and how feed is being metabolised by the fish.…”

Section: Diet Selectionmentioning

confidence: 99%

“…13 C or 15 N) or radio tracer labelling molecules (e.g. 3 H, 14 C or 35 S) has improved and simplified the quantification of feed intake and nutrient utilisation (Boehlert and Yoklavich 1984;Conceição et al 2001;Engrola et al 2009a;Gamboa-Delgado et al 2008;Jomori et al 2008;Kolkovski et al 1997;Kvåle et al 2006;Rust 1995). In Senegalese sole fed with an Artemia replacement strategy, it was possible to observe that 16-17 DAH postlarvae presented an Artemia intake of 11% and an Artemia protein digestibility of 57% (Engrola et al 2009a) and that the contribution of Artemia to tissue growth was 62% (Gamboa-Delgado et al 2008).…”

Section: Diet Selectionmentioning

confidence: 99%

Novel methodologies in marine fish larval nutrition

Conceição

Aragão

Richard

et al. 2009

Fish Physiol Biochem

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Major gaps in knowledge on fish larval nutritional requirements still remain. Small larval size, and difficulties in acceptance of inert microdiets, makes progress slow and cumbersome. This lack of knowledge in fish larval nutritional requirements is one of the causes of high mortalities and quality problems commonly observed in marine larviculture. In recent years, several novel methodologies have contributed to significant progress in fish larval nutrition. Others are emerging and are likely to bring further insight into larval nutritional physiology and requirements. This paper reviews a range of new tools and some examples of their present use, as well as potential future applications in the study of fish larvae nutrition. Tube-feeding and incorporation into Artemia of (14)C-amino acids and lipids allowed studying Artemia intake, digestion and absorption and utilisation of these nutrients. Diet selection by fish larvae has been studied with diets containing different natural stable isotope signatures or diets where different rare metal oxides were added. Mechanistic modelling has been used as a tool to integrate existing knowledge and reveal gaps, and also to better understand results obtained in tracer studies. Population genomics may assist in assessing genotype effects on nutritional requirements, by using progeny testing in fish reared in the same tanks, and also in identifying QTLs for larval stages. Functional genomics and proteomics enable the study of gene and protein expression under various dietary conditions, and thereby identify the metabolic pathways which are affected by a given nutrient. Promising results were obtained using the metabolic programming concept in early life to facilitate utilisation of certain nutrients at later stages. All together, these methodologies have made decisive contributions, and are expected to do even more in the near future, to build a knowledge basis for development of optimised diets and feeding regimes for different species of larval fish.

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Leaching properties of three different micropaticulate diets and preference of the diets in cod (Gadus morhua L.) larvae

Cited by 71 publications

References 29 publications

Dietary indispensable amino acids profile affects protein utilization and growth of Senegalese sole larvae

Dietary indispensable amino acids profile affects protein utilization and growth of Senegalese sole larvae

Effect of some rearing systems on growth and development of the Egyptian sole (Solea aegyptiaca Chabanaud, 1927) larvae.

Novel methodologies in marine fish larval nutrition

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