Valine in diets for Nile tilapia

Rodrigues, Rômulo Batista; Lui, Tatiane Andressa; Neu, Dacley Hertes; Boscolo, Wilson Rogério; Bittencourt, Fábio

doi:10.5935/1806-6690.20180053

Cited by 5 publications

(2 citation statements)

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“…However, weight gain consists of increases in proteins, lipids, minerals, and water (NRC, 2011), and there is no metabolic demand for AAs to maintain lipid and mineral reserves (Marchão et al, 2020). In this sense, body protein deposition is the most suitable variable to determine the AA requirement for fish (Bomfim et al, 2020;Lee et al, 2020;Silva et al, 2018;Costa Sousa et al, 2021), especially valine because it is used in greater proportion for protein synthesis (Rodrigues et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Dietary valine requirement of tambaqui (Colossoma macropomum) with different body weights

et al. 2022

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Tambaqui (Colossoma macropomum ) is one of the highly produced freshwater fish in Brazilian fish farming. However, its production efficiency associated with the refinement of diet formulations is limited due to a lack of information on nutritional requirements for certain essential amino acids such as valine. This study was designed to estimate the valine requirement of tambaqui having different body weights. A total of 720 juveniles were used in the feed trials. The first trial consisted of 360 fish with an average initial weight of 33.28 ±0.19 g, and the second trial comprised 360 fish (121.19 ±1.29 g). The trials consisted of dose-response experiments with five levels of valine (5.0, 7.0, 9.0, 11.0, and 13.0 g/kg diet) and four replicate tanks per treatment. The control diet was obtained by adding L-valine to the diet containing 5.0 g/kg diet (the first level of valine tested) to ensure it reached the diet containing 7.0 g/kg diet, corresponding to the second level tested. Analysis of variance, Dunnett’s test for comparison with the control diet, and regression analysis were performed. The results showed that the valine intake, weight gain, specific growth rate, and feed conversion ratio were significantly improved by the dietary valine (P < 0.05) in both trials. Dietary levels of valine exerted quadratic effects on body protein, body fat, body protein deposition, and nitrogen retention efficiency of tambaqui with 33 g and 121 g as body fat deposition was affected by the dietary valine level only in tambaqui weighing 33 g. Quadratic regression analysis of body protein deposition data revealed the optimum dietary valine requirement of tambaqui (33.0 g-83.0 g) and (121.0 g-277.0 g) as 11.9 g/kg diet and 9.1 g/kg diet, respectively.

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Section: Resultsmentioning

confidence: 99%

Dietary valine requirement of tambaqui (Colossoma macropomum) with different body weights

et al. 2022

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“…Mean values of VSI (14.84%) and HSI (2.96%) were similar to those reported by Tian et al (2018) in the genetically improved farmed tilapia strain O. niloticus but higher than Stoneham et al (2018) findings for tilapia O. niloticus Â O. aureus juveniles. Differences in the results from different studies can be related to the physiological state, environmental conditions, and size and age of the animals (Rodrigues et al, 2018).…”

Section: Experimental Feeds Admd (%) Apd (%) Ald (%)mentioning

confidence: 99%

Canary seed, Phalaris canariensis, has higher nutritional value than giant kelp seaweed, Macrocystis pyrifera, as feed ingredient in diets for Nile tilapia, Oreochromis niloticus

Gutiérrez‐Leyva

Rodríguez‐González²,

Carrillo‐Domínguez

et al. 2022

J World Aquaculture Soc

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Nonconventional feed ingredients for different aquatic species need to be tested to establish their nutritional value. Thus, this study assessed the use of canary seed (CS), Phalaris canariensis L., and giant kelp seaweed (KS), Macrocystis pyrifera, as ingredients for Nile tilapia, Oreochromis niloticus L., feed. Two feeding trials were conducted: (1) Growth trial, where seven feeds were tested; a control diet (CD) and six CS/KS diets (100, 200, 300 g/kg). Fish fed CS/KS diets (100 and 200 g/kg) had similar weight gain to those fed CD, whereas CS/KS diets (300 g/kg) decreased growth performance (p < 0.05). The CS‐diet Economic Conversion Ratios and KS100 diet were similar to CD, while KS inclusion levels (200, 300 g/kg) decreased this parameter (p < 0.05). Dietary KS inclusion of 300 g/kg significantly decreased the profit index compared with CD and CS‐diets (p < 0.05, 2), digestibility trial, where nine feeds were evaluated: a reference diet (RD); six CS/KS diets (100, 200, 300 g/kg) to determine diet digestibility, and two CS/KS diets (300 g/kg) to determine ingredient digestibility. CS dry matter, protein, and lipid digestibility were higher than KS (p < 0.05). The results suggest that CS has higher nutritional value than KS for Nile tilapia.

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Role of branched‐chain amino acids on growth, physiology and metabolism of different fish species: A review

et al. 2021

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Branched-chain amino acids (BCAAs), leucine, isoleucine and valine have an enormous functional significance because of their involvement in fish physiology. Branchedchain amino acids are not limited to act as substrates of protein synthesis but are also part of the protein synthesis regulation. BCAAs regulate various key signalling pathways. Leucine has a pivotal role in mTOR activation, while isoleucine and valine have a predominant energy and glucose metabolism action. Research over the years has highlighted the importance of dietary BCAAs levels on the growth and development of fish. The available data suggest that fish require slightly higher amounts of BCAAs at the initial stage than at the latter stages of life. BCAAs requirements of different fish species have indicated wide variations: 11.5 to 91.0 g leucine/kg dietary protein, 15.4 to 42.3 g isoleucine/kg dietary protein and 17.7 to 46.91 g valine/kg dietary protein. This review paper covers the dietary BCAA requirements of various fish species and the modulation action of BCAAs on vital functions, as protein synthesis, metabolic pathway, glucose transportation and immune response.

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Valine in diets for Nile tilapia

Cited by 5 publications

References 0 publications

Dietary valine requirement of tambaqui (Colossoma macropomum) with different body weights

Dietary valine requirement of tambaqui (Colossoma macropomum) with different body weights

Canary seed, Phalaris canariensis, has higher nutritional value than giant kelp seaweed, Macrocystis pyrifera, as feed ingredient in diets for Nile tilapia, Oreochromis niloticus

Role of branched‐chain amino acids on growth, physiology and metabolism of different fish species: A review

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