Chemical composition and apparent digestibility of a panel of dried microalgae and cyanobacteria biomasses in rainbow trout (Oncorhynchus mykiss)

Cerri, Roberto; Niccolai, Alberto; Cardinaletti, Gloriana; Tulli, Francesca; Mina, Fabio; Daniso, Enrico; Bongiorno, Tiziana; Zittelli, Graziella Chini; Biondi, Natascia; Tredici, Mario R.; Tibaldi, E.

doi:10.1016/j.aquaculture.2021.737075

Cited by 23 publications

(12 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, in the present study, DM, OM, CP, total lipids, GE, and most FA ADC were higher in diets with algae blend supplementation. These results contrast with the consistently reduced digestibility reported in the literature with algae inclusion, which has been attributed to algae cell walls complex polysaccharides that can resist enzymatic degradation in the stomach and small intestine of monogastric animals ( 84 ) and reduce the availability of intracellular nutrients ( 29 , 54 , 85 , 86 ), namely ulvans in Ulva sp., carrageenans in Gracilaria sp. ( 16 ), cellulosic polymers and glucosamine, a chitin-like glycan, in Chlorella sp.…”

Section: Discussioncontrasting

confidence: 93%

A commercial blend of macroalgae and microalgae promotes digestibility, growth performance, and muscle nutritional value of European seabass (Dicentrarchus labrax L.) juveniles

Mota

Pinto

Sá³

et al. 2023

Front. Nutr.

View full text Add to dashboard Cite

Algae can leverage aquaculture sustainability and improve the nutritional and functional value of fish for human consumption, but may pose challenges to carnivorous fish. This study aimed to evaluate the potential of a commercial blend of macroalgae (Ulva sp. and Gracilaria gracilis) and microalgae (Chlorella vulgaris and Nannochloropsis oceanica) in a plant-based diet up to 6% (dry matter basis) on digestibility, gut integrity, nutrient utilization, growth performance, and muscle nutritional value of European seabass juveniles. Fish (11.3 ± 2.70 g) were fed with isoproteic, isolipidic, and isoenergetic diets: (i) a commercial-type plant-based diet with moderate fishmeal (125 g kg−1 DM basis) and without algae blend (control diet; Algae0), (ii) the control diet with 2% algae blend (Algae2), (iii) the control diet with 4% algae blend (Algae4), and (iv) the control diet with 6% algae blend (Algae6) for 12 weeks. The digestibility of experimental diets was assessed in a parallel study after 20 days. Results showed that most nutrients and energy apparent digestibility coefficients were promoted by algae blend supplementation, with a concomitant increase in lipid and energy retention efficiencies. Growth performance was significantly promoted by the algae blend, the final body weight of fish fed Algae6 being 70% higher than that of fish fed Algae0 after 12 weeks, reflecting up to 20% higher feed intake of algae-fed fish and the enhanced anterior intestinal absorption area (up to 45%). Whole-body and muscle lipid contents were increased with dietary algae supplementation levels by up to 1.79 and 1.74 folds in Algae 6 compared to Algae0, respectively. Even though the proportion of polyunsaturated fatty acids was reduced, the content of EPA and DHA in the muscle of algae-fed fish increased by nearly 43% compared to Algae0. The skin and filet color of juvenile European seabass were significantly affected by the dietary inclusion of the algae blend, but changes were small in the case of muscle, meeting the preference of consumers. Overall results highlight the beneficial effects of the commercial algae blend (Algaessence®) supplementation in plant-based diets for European seabass juveniles, but feeding trials up to commercial-size fish are needed to fully assess its potential.

show abstract

Section: Discussioncontrasting

confidence: 93%

A commercial blend of macroalgae and microalgae promotes digestibility, growth performance, and muscle nutritional value of European seabass (Dicentrarchus labrax L.) juveniles

Mota

Pinto

Sá³

et al. 2023

Front. Nutr.

View full text Add to dashboard Cite

show abstract

“…Nutrient ADCs of ingredients are utilized in diet formulation programs to satisfy the nutrient requirements of a target fish species at the least cost. The nutrient digestibility varies based on the chemical composition of ingredients used (Cerri et al, 2021). In the current study, SBM, RSM and WF showed significantly lower apparent dry matter digestibility compared to all the other plant feedstuffs tested.…”

Section: Discussionmentioning

confidence: 48%

Apparent digestibility coefficients of plant feed ingredients for olive flounder (Paralichthys olivaceus)

Rahman¹,

Gunathilaka²,

You³

et al. 2023

Fish Aquat Sci

View full text Add to dashboard Cite

This study was designed to determine the apparent digestibility coefficients of soybean meal, soy protein concentrate (SPC), soy protein isolate (SPI), rapeseed meal (RSM), pea protein concentrate (PPC), wheat gluten meal (WGM) and wheat flour (WF) for olive flounder, Paralichthys olivaceus. A reference diet (RF) was formulated to meet the nutrient requirements of olive flounder with 1% chromic oxide (Cr 2 O 3 ) as an inert indicator. Test diets were prepared to contain 70% RF and 30% of the test ingredient. Olive flounder, averaging 150 ± 8.0 g, was cultured in 400-L fiberglass tanks at a density of 25 fish per tank. Fecal collection columns were attached to each tank. Fecal samples were obtained from triplicate groups of fish for 4 weeks. Dry matter digestibility of SPC (75%) and WGM (76%) were significantly higher than the other test ingredients. Protein digestibility of SPC (85%), PPC (88%) and WGM (89%) were significantly higher than the other test ingredients, and protein digestibility of RSM (77%) and WF (76%) was lower than the other ingredients tested. Lipid digestibility of SPC (72%) and SPI (69%) were significantly higher than the other test ingredients. Energy digestibility of SPC (85%) and WGM (82%) were significantly higher than that of others tested ingredients. The availability of amino acids in WGM was generally higher than in other plant-feed ingredients. Therefore, SPC and WGM were seems to be efficient as potential protein sources for olive flounder compared to other tested ingredients. Overall, findings of the current study may assist in more efficient and economical formulation of diets using plant feed ingredients for olive flounder.

show abstract

“…Through the chemical scores, it was possible to identify the nutritional value and determine the order of the limiting amino acids in this study. For example, a chemical score below 1.00 means that the protein studied has at least one essential amino acid in insufficient numbers [ 40 ]. The results presented in Figure 2 show that for Scenedesmus obliquus , histidine is considered the first limiting amino acid, as it presented the lowest chemical score value when compared, for all photo-cycles.…”

Section: Resultsmentioning

confidence: 99%

The Role of Photo-Cycles in the Modulation of Growth and Biochemical Profile of Microalgae: Part I—Food Interest Compounds

Sartori

Vendruscolo

Ribeiro

et al. 2022

Life

View full text Add to dashboard Cite

The objective of this work was to evaluate the effect of different photo-cycles on the growth and biochemical profile of Scenedesmus obliquus CPCC05, focusing on food interest compounds. The photo-cycle conditions were separated into three groups: long-term photo-cycles (24:0, 22:2, 20:4, 18:6, 12:12, and 10:14 (h:h)), frequency photo-cycles (2, 4, 8, 12, 24, and 48 times per day (t/d)), and short photo-cycles (0.91:0.09, 0.83:0.17, 0.75:0.25, and 0.50:0.50 (s:s)) of light:dark, respectively. The results showed these microalgae can store enough energy to support cell growth for continuous periods of up to 2 h in the dark, without affecting the productivity of the process. This 2 h, when divided into 2 cycles per day (2 t/d), showed the best growth condition (3700 mg L−1), generation time (14.40 h), and maximum biomass productivity (21.43 mg L h−1). This photo-cycle of 2 t/d was also the best condition for the production of total sterols. However, the values of polyunsaturated fatty acids, lipid content, and amino acids obtained higher yields in the short photo-cycle of 0.75:0.25. Thus, the modulation of light cycles becomes an important tool for boosting and directing the production of target molecules in phototrophic cultures of microalgae.

show abstract

Chemical composition and apparent digestibility of a panel of dried microalgae and cyanobacteria biomasses in rainbow trout (Oncorhynchus mykiss)

Cited by 23 publications

References 79 publications

A commercial blend of macroalgae and microalgae promotes digestibility, growth performance, and muscle nutritional value of European seabass (Dicentrarchus labrax L.) juveniles

A commercial blend of macroalgae and microalgae promotes digestibility, growth performance, and muscle nutritional value of European seabass (Dicentrarchus labrax L.) juveniles

Apparent digestibility coefficients of plant feed ingredients for olive flounder (Paralichthys olivaceus)

The Role of Photo-Cycles in the Modulation of Growth and Biochemical Profile of Microalgae: Part I—Food Interest Compounds

Contact Info

Product

Resources

About