Selection and improvement of alternative raw materials for rainbow trout (Oncorhynchus mykiss) aquafeeds through a multiparametric screening tool

Toledo-Solís, Francisco Javier; Hilerio-Ruiz, Andrea Guadalupe; Martínez, Francisca P.; Barrios, Abel; Aznar, María J.; Larrán, Ana María; Fernández, Ignacio; Moyano, Francisco Javier

doi:10.1016/j.anifeedsci.2022.115284

Cited by 5 publications

(7 citation statements)

References 80 publications

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“…Red vetchling is a legume with low production cost that is highly adapted to environments with unfavorable conditions including drought or low temperatures, with enhanced resistance to powdery mildew, pseudomonas, crenate broomrape (Orobanche crenata), or rust [9,11]. The suitability of red vetchling as an alternative source of protein for fish diets was previously evaluated in vitro regarding its total buffering capacity, inhibition of alkaline protease activity, soluble protein, phytic phosphorus, total soluble phosphorus, and phenolic compounds content, and was compared to other potential vegetable protein sources [8]. Red vetchling was also reported to contain numerous bioactive compounds, mainly antioxidants (e.g., polyphenols and vitamins) [9].…”

Section: Discussionmentioning

confidence: 99%

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Red Vetchling (Lathyrus cicera L.), a Promising Crop for the Sustainable Replacement of Soybean Meal and Reducing the Carbon Footprint of European Aquafeeds

Toledo-Solís,

Mokhles Abadi Farahani,

Yagüe

et al. 2023

Animals

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In fish diets, soybean meal (SBM) is still positioned as the most widely used alternative to replace fishmeal. Red vetchling (Lathyrus cicera), a crop locally produced in Europe, is here evaluated as a substitute for SBM. Rainbow trout (Oncorhynchus mykiss) juveniles (10.34 ± 0.04 g) were fed for 90 days. Six experimental diets replacing the SBM content at 0, 8, 16, 33, 66, and 100% (Named Control, T8, T16, T33, T66, and T100) were tested. Growth performance and fish fillet amino acid composition were only significantly reduced in fish fed the T100 diet. Histopathological analysis showed that no major alterations were observed in the intestine, while T100 fish had a higher density of pyknotic nuclei in the hepatocytes than the Control, but similar hepatocyte surface coverage. Finally, postprandial levels of glucose and triglycerides in blood plasma decreased when red vetchling content was increased, but was only not fully restored after 24 h in the case of glucose in T66 and T100 fish. According to these results, red vetchling meal can replace up to 66% of the SBM without a negative effect on fish growth or physiology, representing a good alternative raw material for reducing European aquaculture’s dependency on SBM imports and the carbon footprint of aquafeeds.

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Section: Discussionmentioning

confidence: 99%

“…In 2023, the EU only produced 2 million of the 28-29 million tons consumed. Therefore, for less dependent and more sustainable European aquaculture, the implementation of locally produced legumes in animal feeds is needed [7,8]. This will help to reduce the carbon footprint of European aquafeeds and its production costs.…”

Section: Introductionmentioning

confidence: 99%

Red Vetchling (Lathyrus cicera L.), a Promising Crop for the Sustainable Replacement of Soybean Meal and Reducing the Carbon Footprint of European Aquafeeds

Toledo-Solís,

Mokhles Abadi Farahani,

Yagüe

et al. 2023

Animals

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“…In the process of deciding whether a raw material or specific nutrient/additive should be included and/or supplemented in fish diets, different evaluations have been proposed [ 42 , 43 ]. Nevertheless, only very few studies have explored the nutrient stability and optimal storage conditions when included in commercial aquafeeds [ 44 , 45 ].…”

Section: Discussionmentioning

confidence: 99%

Fish Microbiome Modulation and Convenient Storage of Aquafeeds When Supplemented with Vitamin K1

Acosta

Quiroz‐Guzmán

Tovar‐Ramírez

et al. 2022

Animals

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Vitamin K (VK) is a fat-soluble vitamin necessary for fish metabolism and health. VK stability as dietary component during aquafeed storage and its potential effect on intestinal microbiome in fish have not yet been completely elucidated. The convenient storage conditions of aquafeeds when supplemented with phylloquinone (VK1), as well as its potential effects on the gut microbiota of Senegalese sole (Solea senegalensis) juveniles, have been explored. Experimental feeds were formulated to contain 0, 250 and 1250 mg kg−1 of VK1 and were stored at different temperatures (4, −20 or −80 °C). VK stability was superior at −20 °C for short-term (7 days) storage, while storing at −80 °C was best suited for long-term storage (up to 3 months). A comparison of bacterial communities from Senegalese sole fed diets containing 0 or 1250 mg kg−1 of VK1 showed that VK1 supplementation decreased the abundance of the Vibrio, Pseudoalteromonas, and Rhodobacterace families. All these microorganisms were previously associated with poor health status in aquatic organisms. These results contribute not only to a greater understanding of the physiological effects of vitamin K, particularly through fish intestinal microbiome, but also establish practical guidelines in the industry for proper aquafeed storage when supplemented with VK1.

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“…2020; Toledo‐Solís et al. 2022). Reduction of several anti‐nutritional factors during production of SPC has allowed for increased incorporation of soy in Rainbow Trout feeds from approximately 20% to over 50% of the diet, with less impact on growth and well‐being (Bruce et al.…”

Section: Introductionmentioning

confidence: 99%

“…Adoption of plant protein concentrates and isolates as total or partial replacement of fish meal (FM) and soybean meal (SBM) in feeds for Rainbow Trout Oncorhynchus mykiss has increased in recent years, with soy protein concentrate (SPC) being the most commonly used (Merino et al 2012;Hodar et al 2020;Toledo-Solís et al 2022). Reduction of several anti-nutritional factors during production of SPC has allowed for increased incorporation of soy in Rainbow Trout feeds from approximately 20% to over 50% of the diet, with less impact on growth and well-being (Bruce et al 2018;Voorhees et al 2019;Welker et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Improved fecal particle size profile in Rainbow Trout fed feeds containing different ratios of animal meal and plant protein concentrates: Effect on nitrogen and phosphorus partitioning

Welker,

Barrows

2023

N American J Aquac

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In this project, three diets in which fishmeal (FM) (reference diet) was completely replaced with a combination of poultry meal (PM), corn protein concentrate, soy protein concentrate, and guar gum were evaluated to determine the portioning of nitrogen and phosphorus (P) in fecal particle size classes (fines, mid‐size, large; <0.6 mm, 0.6 ‐1.2 mm, >1.2 mm) and compared to a commercial rainbow trout feed. Feces was evaluated for particle size composition and the content of total nitrogen (TN) and total phosphorus (TP) in each size class. There was a significant difference in fecal particle size composition of trout fed the experimental diets compared to the commercial feed. Fish fed the four experimental diets produced feces with approximately 43% large particles and 24% fines, compared to 6% and 67% for the trout fed the commercial diet. The TN in feces of trout fed the FM diet (3.84%) was significantly higher than for the FM‐free diets, which also declined linearly (2.68%, 1.91%, and 1.59%) as the content of PM was replaced with plant‐based protein. An interaction was also observed between diet and particle size on fecal N content in which a significant increase in TN from large particles compared to fines occurred for the experimental FM diet, but there was little difference between size classes for the non‐FM based feeds. The feces of trout fed the FM diet contained more TP (100,007 ug/g) than feces of fish fed the FM‐free diets (46,751 to 72,659 ug/g), likely due to higher dietary P content of FM, but TP concentrations followed a similar trend as TN in the FM‐free feeds, declining as the proportion of plant protein sources increased (and PM decreased). The large fecal particles (72,235 ug/g) contained more TP than the mid‐size particles (68,926 ug/g) or fines (61,974 ug/g), which could be due to leaching in the latter two particle size classes, as the potential for solubility likely increased as particle size decreased. These findings may have important implications for improving the fecal particle size profile for sedimentation and removal of regulated nutrients through formulation of rainbow trout feeds in replacement of FM with plant protein.

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Selection and improvement of alternative raw materials for rainbow trout (Oncorhynchus mykiss) aquafeeds through a multiparametric screening tool

Cited by 5 publications

References 80 publications

Red Vetchling (Lathyrus cicera L.), a Promising Crop for the Sustainable Replacement of Soybean Meal and Reducing the Carbon Footprint of European Aquafeeds

Red Vetchling (Lathyrus cicera L.), a Promising Crop for the Sustainable Replacement of Soybean Meal and Reducing the Carbon Footprint of European Aquafeeds

Fish Microbiome Modulation and Convenient Storage of Aquafeeds When Supplemented with Vitamin K1

Improved fecal particle size profile in Rainbow Trout fed feeds containing different ratios of animal meal and plant protein concentrates: Effect on nitrogen and phosphorus partitioning

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