Digestible tryptophan requirement for tambaqui (Colossoma macropomum) fingerlings

Bomfim, Marcos Antônio Delmondes; Marchão, Rafael Silva; Ribeiro, Felipe Barbosa; Siqueira, Jefferson Costa de; Silva, Louis Ramos; Takishita, Sylvia Sanae

doi:10.5935/1806-6690.20200025

Cited by 11 publications

(13 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Regarding the comparison of techniques, the equivalence of results in the main variables evaluated, in particular weight gain, feed conversion ratio and body protein deposition confirms the feasibility of using the dilution technique in the studies to determine amino acids requirements in fishes. This equivalence was also observed in a study with broilers (D'Mello, 1982;Siqueira et al, 2013) and corroborates the researches carried out white fishes by Bomfim et al (2020), Bomfim et al (2021), Liebert (2009) and Marchão et al (2020).…”

Section: Body Depositions and Nitrogen Retention Efficiencysupporting

confidence: 89%

“…The main advantage, in this case, would be the use of lower crystalline amino acid levels, which would favour the determination of amino acid requirements in experiments with non-ruminant animals (Liebert & Benkendorff, 2007;Marchão et al, 2020;Rostagno et al, 2007;Siqueira et al, ,2009Siqueira et al, , , 2013. In studies with fish for determination of amino acid requirements, there is an intensification in the use of this technique (Bomfim et al, 2020;Liebert, 2009;Marchão et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lysine requirements of tambatinga (♀ Colossoma macropomum × ♂ Piaractus brachypomus ) fingerlings using different diet formulation techniques

et al. 2021

Self Cite

View full text Add to dashboard Cite

Section: Body Depositions and Nitrogen Retention Efficiencysupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Lysine requirements of tambatinga (♀ Colossoma macropomum × ♂ Piaractus brachypomus ) fingerlings using different diet formulation techniques

et al. 2021

Self Cite

View full text Add to dashboard Cite

“…Therefore, it also circumvents the problem regarding the restricted feed intake and lower utilization of diets provided with an excess of synthetic amino acids in fish diets (Liebert;Benkendorff, 2007;Marchão et al, 2020;Ullah-Khan, 2019). Studies on fish for the determination of amino acid requirements have increasingly used this technique (Bomfim et al, 2020;Liebert;Benkendorff, 2007;Liebert, 2009;Marchão et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Digestible threonine requirement in diets for tambatinga (♀Colossoma macropomum x ♂Piaractus brachypomus) fingerlings

et al. 2021

Self Cite

View full text Add to dashboard Cite

Cross breeding of native fish species is a technique to produce hybrids that can express higher weight gain and feed efficiency compared to the parental species. The digestible threonine requirement in diets for tambatinga fingerlings (Colossoma macropomum ♀ x Piaractus brachypomus ♂) was determined in this study. For this, 700 fingerlings with an average initial weight of 2.39 ±0.02 g and average final weight of 35.96 ±2.03 g were distributed in a completely randomized design consisting of six treatments (0.600, 0.800, 1.000, 1.200, 1.400, and 1.600% digestible threonine) and five replicates per treatment, with 20 fish per experimental unit. Diets were formulated by the “diet dilution” technique using the ideal protein concept. Performance, feed efficiency, body depositions of protein, ash and fat, and nitrogen retention efficiency of the fish were evaluated. The digestible threonine levels that optimized weight gain, specific growth rate, and feed conversion ratio were 1.40, 1.27 and 1.10%, respectively. Body deposition of fat was reduced in a quadratic manner (p<0.01), and the body depositions of protein and ash, together with the efficiency of nitrogen retention, were optimized by the digestible threonine level of 1.20; 1.33, and 0.82%, respectively. The recommended digestible threonine level in the diet for tambatinga fingerlings is 1.20 to 1.40% (0.40 and 0.47% Mcal DE-1) to obtain higher body deposition of protein and weight gain, respectively.

show abstract

“…Weight gain has been used to determine the requirement for amino acids in dose-response studies (Bomfim et al, 2020;Firmo et al, 2018;Souza et al, 2019). However, it is not considered a reliable variable to determine the requirement of amino acids for maintenance or growth, considering that fish can gain weight in the form of body protein, water, fat, and to a lesser extent minerals (Sakomura;Rostagno, 2016;Sousa et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

“…The amino acid requirements of fish have been determined by the dose-response method (Bomfim et al, 2020;Firmo et al, 2018;Souza et al, 2019) that evaluates the response (in function) of the increase in the test amino acid of the diet that maximizes the animal performance (Sakomura;Rostagno, 2016). However, another methodology that has gained prominence in determining the amino acid requirement in fish studies is the factorial method (Abboudi et al, 2006;He et al, 2013;Hua;Suwendi;Bureau, 2019) that determines the need for a nutrient considering the sum of the maintenance requirements plus growth and/or production (Sakomura;Rostagno, 2016).…”

Section: Introductionmentioning

confidence: 99%

Methionine plus cystine requirements for the maintenance and efficiency of utilization with tambaqui of different body weights

et al. 2020

Self Cite

View full text Add to dashboard Cite

Methionine is an essential amino acid, and generally, the first limiting one in the diets of tambaqui, the main native fish produced in continental aquaculture in South America. However, there is a lack of information on their amino acid requirement, especially for maintenance and efficiency of utilization. The present study aimed to determine the requirement of [methionine plus cystine] for the maintenance and efficiency of utilization using tambaqui of different body weights. Two experiments were carried out using 250 tambaqui with weights of 100 and 300 g. They were distributed in a completely randomized design with four treatment groups (0.264, 0.396, 0.528, and 0.660% of digestible [Met + Cys]), five replications. The control treatment (CT) was performed with the addition of methionine at the first level (0.264%) until the second level was reached (0.396%). The maintenance requirement was determined by the regression analysis between the consumption of [Met + Cys] and protein retention equal to zero. The efficiency was determined using the value of the slope coefficient of the line obtained by the linear regression. The protein and methionine retention values of tambaqui weighing 100 to 300 g were compared by the parallelism test, and no difference was observed between the parameters of the equations indicating the need for only one equation to describe the responses to body weights. The requirement of digestible [Met + Cys] for the maintenance of tambaqui with weights from 100 to 300 g was 60.47 mg kg-0.7 day-1 and the efficiency of utilization of 42%.

show abstract

Digestible tryptophan requirement for tambaqui (Colossoma macropomum) fingerlings

Cited by 11 publications

References 1 publication

Lysine requirements of tambatinga (♀ Colossoma macropomum × ♂ Piaractus brachypomus ) fingerlings using different diet formulation techniques

Lysine requirements of tambatinga (♀ Colossoma macropomum × ♂ Piaractus brachypomus ) fingerlings using different diet formulation techniques

Digestible threonine requirement in diets for tambatinga (♀Colossoma macropomum x ♂Piaractus brachypomus) fingerlings

Methionine plus cystine requirements for the maintenance and efficiency of utilization with tambaqui of different body weights

Contact Info

Product

Resources

About