2009
DOI: 10.1590/s1516-35982009000800002
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Crude protein reduction and digestible methionine+cystine and threonine to digestible lysine ratios in diets for Nile tilapia fingerlings

Abstract: -The objective of the present study was to investigate crude protein reduction and the methionine+cystine and threonine to lysine ratios in diets for reversed Nile tilapia fingerlings (Oreochromis niloticus), Thai strain. Four hundred and twenty Nile tilapia fingerlings with an average initial weight of 1.83 ± 0.02 g were placed in a completely randomized design, with five treatments, seven replications per treatment and 12 fish per experimental unit, for 37-days. Two crude protein (CP) levels were evaluated (… Show more

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Cited by 10 publications
(8 citation statements)
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“…Similar responses were observed in other studies on Nile tilapias (FURUYA et al, 2005;QUADROS et al, 2009) and rainbow-trout (YAMAMOTO et al, 2005), in which increased protein retention was observed as the amino acid balance was improved in the diets with the lowest protein content; therefore, reducing the nitrogen excretion to the environment.…”
Section: Resultssupporting
confidence: 88%
“…Similar responses were observed in other studies on Nile tilapias (FURUYA et al, 2005;QUADROS et al, 2009) and rainbow-trout (YAMAMOTO et al, 2005), in which increased protein retention was observed as the amino acid balance was improved in the diets with the lowest protein content; therefore, reducing the nitrogen excretion to the environment.…”
Section: Resultssupporting
confidence: 88%
“…These findings were likely due to an imbalance of amino acids in specialized tissues, caused by early catabolism of commercial amino acids, as a consequence of faster rates of gastric emptying and absorption (TANTIKITTI;MARCH, 1995;SCHUHMACHER;WAX;GROPP, 1997;AOKI;AKIMOTO;WATANABE, 2001;BOMFIM et al, 2008;QUADROS et al, 2009).…”
Section: Resultsmentioning
confidence: 99%
“…Ideal protein refers to a mixture of amino acids (which is entirely available for digestion, absorption, and metabolism) the composition of which meets the nutritional needs of the animal (BOTARO et al, 2007;BOMFIM et al, 2008;QUADROS et al, 2009;TAKISHITA et al, 2009;FURUYA et al, 2012).…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Tabela 2 -Desempenho de pós-larvas de camarão-branco-do-pacífico alimentadas com dietas com duas concentrações proteicas suplementadas ou não com taurina, ao final de 30 dias dietas com concentrações excessivas de proteína, além de mais caras, podem afetar a qualidade da água dos viveiros, causando sérios problemas de eutrofização pelo aumento da excreção de compostos nitrogenados (Burford & Willians, 2001;González-Félix et al, 2007;Quadros et al, 2009). Nesse sentido, Martinez-Cordova et al (2002) criticaram a tendência dos produtores de camarão em utilizar dietas com altas concentrações proteicas para aumento do crescimento, e salientaram a importância do uso de quantidades adequadas de proteína para atender às exigências dos camarões com o menor custo possível.…”
Section: Característica Deunclassified