Feed processing affected the digestibility of carbohydrate sources for dourado<i>Salminus brasiliensis</i>

Moro, Giovanni Vitti; Silva, T.S.C.; Cyrino, José Eurico Possebon

doi:10.1111/anu.12356

Cited by 10 publications

(10 citation statements)

References 27 publications

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“…The relatively low levels of optimal dietary carbohydrate recorded in the present experiment might be attributed to the raw corn starch used in the formulated diets. It has been demonstrated that the appropriately cooked or gelatinized starch can be effectively utilized by aquatic species as an energy source (Kumar et al., ; Moro, Silva, & Cyrino, ; Stone, Allan, & Anderson, ). The gelatinized corn starch might provide a more digestible feed source for A. japonicus (Xia, Gao et al., ).…”

Section: Discussionmentioning

confidence: 99%

Replacement of dietary macroalgae with corn starch in juvenile sea cucumber Apostichopus japonicus (Selenka)

Wen

Sun²,

Gao

et al. 2017

Aquacult Nutr

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A 70-day experiment was conducted to investigate the optimal dietary macroalgae and substitute proportion by corn starch in juvenile sea cucumber Apostichopus japonicus. Sea cucumbers were fed by eighteen different diets formulated with one of the three macroalgae including Sargassum muticum, Gracilaria lemaneiformis and Ulva lactuca and six graded levels (0, 50, 100, 200, 300 and 400 g/kg) of corn starch as the replacements for each seaweed. An isotope mixing model indicated that the relative contribution of corn starch to the growth of A. japonicus did not consistently increase, even slightly decreased with increasing dietary corn starch level. The contributions of corn starch to A. japonicus fed by diets containing S. muticum were higher than those fed by diets containing G. lemaneiformis with corresponding corn starch levels or containing U. lactuca at 200-400 g/kg replacement proportions. The growth of A. japonicus first significantly increased and then decreased with increasing corn starch level, regardless of macroalgal species. The corn starch could replace up to 200 g/kg of dietary G. lemaneiformis or U. lactuca, even up to 300 g/kg of S. muticum without affecting growth performance. Based on the polynomial regression model, the replacement of S. muticum with 114 g/kg corn starch was optimal for A. japonicus. K E Y W O R D Sdietary carbohydrate, echinoderm, growth, seaweed, stable isotope

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Section: Discussionmentioning

confidence: 99%

Replacement of dietary macroalgae with corn starch in juvenile sea cucumber Apostichopus japonicus (Selenka)

Wen

Sun²,

Gao

et al. 2017

Aquacult Nutr

View full text Add to dashboard Cite

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“…The optimal level of 10% lipid in diet was adequate for growth of hybrid tilapia reared in fresh water according to previous studies (El-Sayed and Garling, 1998;Chou and Shiau, 1996). Although lipids and carbohydrates are available for fish, lipid metabolism is reported to be highly modulated by dietary carbohydrates (He et al, 2015;Moro et al, 2015;Zhou et al, 2015;Tran-Duy et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Carbohydrate-to-lipid ratio in extruded diets for Nile tilapia farmed in net cages

et al. 2018

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The study evaluated productive and economic performance, physiological parameters and nutritional efficiency in net cage-reared Nile tilapia fed extruded diets containing four carbohydrate (CHO) and lipid (LIP) ratios. The 1280 fish in the trial were sex-reversed male Nile tilapia from the Gift strain (157.54 ± 3.50 g). Fish were randomly distributed into 16 net cages (1.0 m 3 ), with 80 tilapias per cage. The four practical diets were formulated with the same ingredients at different proportions of starch and soybean oil contained similar digestible protein (251.40 g Kg −1 ), digestible energy (17.39 Mj Kg −1 ) and CHO:LIP ratios of: 3.89, 4.87, 6.14 and 7.83 (CHO 35 /LIP 9 , CHO 39 /LIP 8 , CHO 43 /LIP 7 and CHO 47 /LIP 6 , respectively). The diets were provided four times a day, for 120 days. Fish fed a CHO 43 /LIP 7 diet exhibited the best productive performance, with 252.01% percent weight gain (WG), 1.07 ± 0.028% daily specific growth rate (SGR) and 462.08 ± 5.06 g feed intake (FI). Fish fed the CHO 43 /LIP 7 diet also showed the highest gross energy retention efficiency (57.17 ± 4.16%) and LIP use for weight gain (13.71 ± 1.47%). CHO 39 /LIP 8 and CHO 43 /LIP 7 diets produced the best economic performance,

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“…O trânsito gastrointestinal da digesta foi avaliado no ano de 2007 quando Braga e colaboradores verificaram que a partir da segunda hora depois da alimentação ocorre redução gradativa do conteúdo estomacal e após 18 horas todo o trato gastrointestinal se exauri completamente (Braga et al, 2007). A partir do ano de 2008 os trabalhos realizados com o dourado foram mais direcionados para ensaio de digestibilidade de ingredientes e níveis de substituição de farinha de peixe na dieta (Braga et al, 2008;Corrêa, 2016;Moro et al, 2015) (…”

Section: Douradounclassified

Hidrolisados proteicos na alimentação de juvenis de dourado <i>Salminus brasiliensis</i>

Lorenz¹

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Protein hydrolysates in diets for juvenile dourado, Saminus brasiliensis Carnivorous fish diets strongly depend on fish meal (FM), a high-cost, scarce feedstuff, given the need for palatable protein and high nutritious value. Animal by-product hydrolysates are high-quality feedstuff that can substitute FM in fish diets. This study evaluated digestibility of hydrolysates from tilapia residue [TR], tuna head [TH], swine liver [SL] and poultry liver [PL], and the profile of digestive enzymes in the stomachs, pyloric cecum and intestines of juvenile (39,73 ± 5,30 g) dourado, Salminus brasiliensis, a carnivorous Characin fed diets containing graded levels of hydrolysates, and the performance of juvenile dourado (4,57 ± 1,25 g) fed diets containing increasing levels of FSU (0, 70, 140, 210 and 280 g kg-1). The addition of hydrolysates to diets lowered the pH of feed, but did not alter feed intake by fish. Higher digestibility coefficients of nutrients were recorded for fish fed diets containing TR and SL, and the lower for those fed diets containing TH. Protease and lipase activity in the fish's stomach was higher, especially for those fed diets containing SL. Amylase activity was higher in pyloric caeca, while in the intestines the higher activity was registered for fish fed control and TR diets. Animal byproduct hydrolysates were highly digestible for dourado, and enzymatic profile of fish depended on nutrients of diets. In the second trial, the lowest values of daily intake were recorded for fish fed diet without inclusion of hydrolysate. However, the lowest weight gain, final weight and specific growth rate, protein and energy efficiency, and protein retention rates were recorded for fish fed diet with 280 g kg-1 of swine hydrolysate. The large proportion of free amino acids and small peptides in the diets with inclusions above 140 g kg-1 of the product apparently reduced the protein synthesis by fish. Health status of fish was not significantly affected by dietary hydrolysates, but apparently, fish fed diets containing more than 140 g kg-1 had better immunohematological indices.

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Feed processing affected the digestibility of carbohydrate sources for douradoSalminus brasiliensis

Cited by 10 publications

References 27 publications

Replacement of dietary macroalgae with corn starch in juvenile sea cucumber Apostichopus japonicus (Selenka)

Replacement of dietary macroalgae with corn starch in juvenile sea cucumber Apostichopus japonicus (Selenka)

Carbohydrate-to-lipid ratio in extruded diets for Nile tilapia farmed in net cages

Hidrolisados proteicos na alimentação de juvenis de dourado <i>Salminus brasiliensis</i>

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