Attractants in plant protein-based diets for the carnivorous largemouth bass Micropterus salmoides

Oliveira, Ana Maria de Menezes Sampaio de Barretto; Cyrino, José Eurico Possebon

doi:10.1590/s0103-90162004000300015

Cited by 19 publications

(17 citation statements)

References 13 publications

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“…The possible reason for the unapparent effects of DMPT and Bet on FI in present research may be partly attributed to the different adaptabilities in fish to response different FS supplementation. This is comparable with previous studies, in which some FS lose their potency if fed in diets for prolonged periods possibly due to adaptability (Liang & Chang, ; Oliveira & Cyrino, ). Besides, FS is species‐specific (Kasumyan & Døving, ), DMPT and Bet might be not suitable for promoting tilapia FI in a relative long‐term feeding.…”

Section: Discussionsupporting

confidence: 92%

Effects of four feeding stimulants in high plant-based diets on feed intake, growth performance, serum biochemical parameters, digestive enzyme activities and appetite-related genes expression of juvenile GIFT tilapia (Oreochromis sp.)

et al. 2017

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The present research evaluated the effects of four feeding stimulants on feed intake (FI), growth performance, body composition, serum biochemical parameters, digestive enzyme activities and appetite-related gene expression for juvenile GIFT tilapia. Five experimental high plant-based diets (with 0, 0.4 g kg −1 dimethyl-β-propiothetin (DMPT), 0.6 g kg −1 dimethylthetin (DMT), 1.8 g kg −1 tryptophan (Trp) and 6 g kg −1 betaine (Bet), respectively supplemented) were fed to juvenile GIFT tilapia (Oreochromis sp.) (3.34 ± 0.01 g) for 8 weeks. The results showed that FI was significantly increased by Trp and DMT. The highest specific growth rate (SGR) and protein efficiency ratio (PER) was observed for fish fed Bet diet, followed by DMT. Serum triglyceride was significantly increased by DMPT. Fish fed Bet diet showed significantly higher intestinal protease, liver protease and intestinal amylase activities. The neuropeptide Y (NPY) mRNA expression in brain was significantly improved by Trp, and ghrelin mRNA expression in stomach was significantly increased by DMT. It is concluded that supplementation of Trp or DMT could act as an effective feeding stimulants (FS) in high plant-based diets for juvenile GIFT tilapia, which might be associated with the relatively higher orexigenic (NPY or ghrelin) genes expression, and supplementation of Bet could improve SGR, PER and reduce feed conversion ratio (FCR) of juvenile GIFT tilapia. K E Y W O R D Sappetite-related genes, betaine, dimethylthetin, dimethyl-β-propiothetin, feeding stimulants, growth, tryptophan

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Section: Discussionsupporting

confidence: 92%

Effects of four feeding stimulants in high plant-based diets on feed intake, growth performance, serum biochemical parameters, digestive enzyme activities and appetite-related genes expression of juvenile GIFT tilapia (Oreochromis sp.)

et al. 2017

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“…It is difficult to ascertain the degree to which the reduction in palatability is due to the inclusion of SPC or the removal of FM. Therefore, it is important to explore the use of feed attractants that would enhance acceptance of these low-FM feeds (de Oliveira and Cyrino 2004;Tiril et al 2008).…”

Section: Soy Protein Concentrate Trialmentioning

confidence: 99%

Exploring Soy‐Derived Alternatives to Fish Meal: Using Soy Protein Concentrate and Soy Protein Isolate in Hybrid Striped Bass Feeds

Blaufuss

Trushenski

2011

N American J Aquac

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Many protein sources, including soybean meal (SBM), have been investigated as alternatives to fish meal (FM) in aquaculture feeds. However, FM replacement in feeds for carnivorous fishes is limited by problems with feed intake, growth rate, and overall health associated with the reduced digestibility of SBM and the antinutritional factors (ANFs) it contains. Processing strategies can reduce the effects of ANFs and can improve protein utilization. We conducted two trials to examine the possibility of further FM replacement in SBM-maximized feeds for hybrid striped bass (white bass Morone chrysops × striped bass M. saxatilis) by using two refined soy products: soy protein concentrate (SPC) and soy protein isolate (SPI). Diets were formulated to maximize FM replacement, beginning with a basal diet containing 10% FM and 65% SBM. Further reductions in FM were made by using SPC or SPI to spare FM-derived protein. Refined soy protein-based feeds were evaluated in feeding trials with juvenile hybrid striped bass that were cultured in recirculating aquaculture systems. Although reducing dietary FM below 10% by using SPC or SPI resulted in decreased production performance, this appears to be due to a reduction in palatability rather than to negative biological effects (e.g., changes in gut histology, major shifts in carcass proximate composition) associated with ANFs or other dietary effects. A moderate reduction in growth associated with administering the SPC-based feeds corresponded with a moderate reduction in feed intake, whereas dietary inclusion of SPI resulted in severe feeding reluctance, starvation, and cannibalism. Although SPC and SPI may vary in their suitability as FM alternatives, the differential performance observed may also be related to the fact that younger, smaller fish were used in the SPI trial than in the SPC trial. Refined soy proteins can be used in conjunction with SBM to spare FM, but the cost of these products and their acceptability to juvenile carnivorous fish will determine the extent of their utilization in aquafeeds.Growing at an average annual rate of 8.5%, aquaculture is the fastest-growing agricultural sector in the world (Tacon and Metian 2008). Because most cultured finfishes, particularly carnivorous taxa, have higher demands for protein than do terrestrial livestock, sustained growth within the aquaculture industry depends on identification and implementation of costeffective sources of protein for use in aquafeeds. Historically, fish meal (FM; ∼70% protein) has been considered the "ideal" protein for aquaculture feeds because of its price and favorable amino acid profile (Trushenski et al. 2006). Yearly production of FM has remained static at roughly 6 million metric tons/year

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“…). Supplementation of diets with attractants and stimulants in plant protein‐based diets has shown to improve feed acceptability and intake, which subsequently improved growth for the carnivorous largemouth bass Micropterus salmoides (Oliveira & Cyrino ). Kotzamanis et al .…”

Section: Introductionmentioning

confidence: 99%

Production of protein hydrolysates from skipjack tuna (Katsuwonus pelamis) viscera as feeding attractants for Asian seabass (Lates calcarifer)

et al. 2013

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Skipjack tuna viscera hydrolysate (TVH) was produced by enzymatic hydrolysis using alcalase. A study of the effect of time and enzyme concentration was performed and formed the basis for preparing TVH with the desired degree of hydrolysis (DH). An enzyme to substrate ratio of 5 g kg À1 (TVH A1) and 16.4 g kg À1 (TVH A2) at pH 8.0 with a temperature of 50°C, and hydrolysis time of 60 min were found to be optimal conditions to obtain hydrolysis of 42.9% and 62.9%, respectively. Both TVH A1 and TVH A2 were analysed for chemical and amino acid composition and peptide size. The effectiveness of TVH at different DH as feeding attractants was estimated in a feeding trial at different inclusion levels. Ten experimental diets, including a fish meal-based reference diet, were fed to Asian seabass for 28 days. Fish fed the diet supplemented with 30 g kg À1 of TVH A2, and the reference diet showed the highest feed intake (P < 0.05). The growth performance of fish fed diets supplemented with TVH was slightly higher than those of fish fed the control diet, but the reference group showed a significantly higher growth rate (P < 0.05). These findings suggest that the supplementation of feed with TVH that has been processed under suitable conditions can improve feed palatability and growth performance when utilizing alternative protein sources in Asian seabass diets.

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Attractants in plant protein-based diets for the carnivorous largemouth bass Micropterus salmoides

Cited by 19 publications

References 13 publications

Effects of four feeding stimulants in high plant-based diets on feed intake, growth performance, serum biochemical parameters, digestive enzyme activities and appetite-related genes expression of juvenile GIFT tilapia (Oreochromis sp.)

Effects of four feeding stimulants in high plant-based diets on feed intake, growth performance, serum biochemical parameters, digestive enzyme activities and appetite-related genes expression of juvenile GIFT tilapia (Oreochromis sp.)

Exploring Soy‐Derived Alternatives to Fish Meal: Using Soy Protein Concentrate and Soy Protein Isolate in Hybrid Striped Bass Feeds

Production of protein hydrolysates from skipjack tuna (Katsuwonus pelamis) viscera as feeding attractants for Asian seabass (Lates calcarifer)

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