Dietary supplementation of lysine and/or methionine on performance, nitrogen retention and excretion in pacu Piaractus mesopotamicus reared in cages

Abimorad, Eduardo Gianini; Favero, Gisele Cristina; Castellani, Daniela; Garcia, Fabiana; Carneiro, Dalton José

doi:10.1016/j.aquaculture.2009.07.001

Cited by 43 publications

(36 citation statements)

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“…23,[36][37][38] Previous research with soy protein also might suggest that limitation of essential, sulfur-containing amino acids (methionine and cysteine) might be expected to limit growth outcomes, 28,39,40 but the fish in this study responded well with similar growth outcomes to the MIX control diet. One explanation for this difference may reside in the high protein content of the diet (*45%), which could offset any limitation of specific amino acids proportionally with a given protein source because of the high absolute mass amount present.…”

Section: Figmentioning

confidence: 60%

Dietary Protein Source Influence on Body Size and Composition in Growing Zebrafish

et al. 2013

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The importance of nutritional components on growth and body composition outcomes has been demonstrated in multiple model organisms. Although zebrafish (Danio rerio) have an established role in research laboratories for its utility in understanding developmental biology and genetics, the influence of diet composition on basic growth outcomes is less well demonstrated. In the current study, four protein sources were tested in isolation using isonitrogenous diets or combined using a defined lab diet. Fish (n&60/group) were group housed (n £ 10 fish/1.8 L tank) and fed ad libitum three times daily for 12 weeks. Fish were assessed for effects on length, body weight, and body composition (lean and fat mass). Individuals fed wheat gluten protein were significantly shorter in length, with significantly lower body weight and lean mass in both male and female fish, although percent body fat was high compared with other diets. Casein-fed fish similarly had significantly reduced body length, body weight, and lean and fat mass in both male and female fish, with a low percent body fat compared with other diets (leanest). Fish protein hydrolysate-fed fish had significantly lower lean mass and a high percent body fat, whereas soy protein isolate diet performed similarly to a mixed-protein control diet for all measured outcomes. These results suggest that the protein source, with accompanying amino acid ratios or additional protein source differences, has a significant impact on growth and body composition outcomes in zebrafish when fed in a semipurified, defined diet background.

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Section: Figmentioning

confidence: 60%

Dietary Protein Source Influence on Body Size and Composition in Growing Zebrafish

et al. 2013

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“…Its diet includes leaves, plant residues, fruit, which are rich in vitamins (Abimorad et al, 2009;Abimorad and Carneiro, 2007;Jomori et al, 2003). In fish farms, vitamins C and E should be antioxidant compounds of great value for this species, which is highly susceptible to diseases under stressful conditions (Martins et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Performance and hematology of pacu fed diets supplemented with vitamins C and/or E

Garcia

Pilarski

Onaka

et al. 2011

Sci. agric. (Piracicaba, Braz.)

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Pacu (Piaractus mesopotamicus Holmberg, 1887) is a valued Brazilian fish species for aquaculture. This is highly susceptible to disease, and feed supplementations for pacu can be a very important strategy to prevent disease incidence in fish farms. The aim of this study was to evaluate a strategic supplementation for pacu. Juvenile pacu (10.5 ± 1.2 g) were fed diets containing three levels of vitamins C and/or E (0, 250, and 500 mg vitamin kg -1 diet). Fish were fed diets without supplementation for two months prior to the experiment. After that period, experimental feeding was initiated for two months. Growth and hematological evaluations were made on the thirtieth and sixtieth days of feeding. Pacu fed diet without supplementation of vitamins C and E during 120 days did not show clear typical signs of deficiency. Fish fed diet vitamins C and E free increased feed intake, but no improvement on growth performance was detected. Vitamin E proved essential for erythrocyte protection, so that the higher the level of this vitamin in diet, the smaller the number of erythroblasts. Supplementation with 500 mg of vitamin C and 250 mg of vitamin E for 60 days increased the production of monocytes, thrombocytes and special granulocytic cells in pacu. Key words: Piaractus mesopotamicus, ascorbic acid, feed supplementation, tocopherol Desempenho e hematologia do pacu alimentado com dietas suplementadas com vitaminas C e/ou E RESUMO: O pacu (Piaractus mesomotamicus Holmberg 1887) é uma espécie altamente valiosa para a aqüicultura brasileira. Entretanto, trata-se de uma das espécies mais susceptíveis a doenças. Por isso, a suplementação alimentar para o pacu pode representar importante estratégia de prevenção da incidência das enfermidades em pisciculturas. Pacus (10,5 ± 1,2 g) foram alimentados com dietas contendo três níveis de vitamina C e/ou E (0, 250 e 500 mg vitamina kg -1 de dieta). Os peixes foram alimentados com dieta não purificada sem suplementação durante os primeiros 60 dias para reduzir as reservas teciduais das vitaminas. Após este período, os peixes foram alimentados com as dietas testadas durante 60 dias. As avaliações de crescimento e hematologia foram realizadas no 30° e 60°d ias. Pacus alimentados com dieta sem suplementação com as vitaminas C e E durante 120 dias não apresentaram sinais claros típicos de deficiência. Os peixes que receberam a dieta deficiente em vitamina C e E apresentaram maior consumo de ração, porém sem melhora no desempenho produtivo. A vitamina E mostrou-se essencial para a proteção dos eritrócitos, sendo que quanto maior o nível desta vitamina na dieta, menor o número de eritroblastos. A suplementação com 500 mg de vitamina C e 250 mg de vitamina E durante 60 dias aumentou a produção de monócitos, trombócitos e células granulocíticas especiais em pacu.

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“…A composição do amido no grão utilizado na confecção das rações e fatores, como a densidade de estocagem, frequência de arraçoamento e período experimental, também podem influenciar o desempenho dos peixes e sua resposta às dietas (Lanna et al, 2004;Abimorad et al, 2009;Rodrigues et al, 2010).…”

Section: Resultsunclassified

Substituição do milho pelo sorgo em dietas para juvenis de pacu

Sanchez

Nascimento

Hisano

2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o coeficiente de digestibilidade aparente (CDA) de sorgo, e determinar o desempenho produtivo, os índices somáticos, os parâmetros hematológicos e a composição centesimal do filé de pacus alimentados com dietas com diferentes níveis de sorgo, além de avaliar o custo da formulação. Para a determinação do CDA da matéria seca (MS), da proteína bruta (PB), do extrato etéreo (EE) e da energia bruta (EB) do sorgo, utilizaram-se 160 pacus, com peso médio de 56,00±8,04 g, alimentados com dieta-referência e dieta-teste (30% sorgo), acrescidas de 0,1% de óxido de cromo III. Para avaliação do desempenho, utilizaram-se 180 juvenis de pacu (10,80±0,77 g) alimentados com cinco dietas experimentais, em que 0, 25, 50, 75 e 100% da energia do milho foi substituída pela do sorgo. Os CDA do sorgo pelo pacu foram: 78,52% da MS; 74,82% da PB; 94,36% de EE; e 77,24% de EB. Não se observaram diferenças entre as dietas quanto ao desempenho, aos índices somáticos e aos parâmetros hematológicos. Porém, na composição centesimal dos filés, houve diferença entre os tratamentos. O sorgo apresenta CDA semelhante ao do milho e pode substituí-lo integralmente em dietas para juvenis de pacu, além de diminuir o custo da formulação.Termos para indexação: Piaractus mesopotamicus, Sorghum bicolor, desempenho, digestibilidade aparente, hematologia. Replacement of corn by sorghum in diets for pacu juvenileAbstract -The objective of this work was to evaluate the apparent digestibility coefficient (ADC) of sorghum, and to determine the growth performance, somatic indices, hematological parameters, and fillet centesimal composition of pacu juveniles fed diets with different levels of sorghum, besides evaluating the cost of the diet formulation. To determine the ADC of dry matter (DM), crude protein (CP), ether extracts (EE), and gross energy (GE) of sorghum, 160 pacus, with 56.00±8.04 g average weight, were used; fish were fed reference and test diets (30% sorghum) plus 0.1% of chromium III oxide. For the growth performance trial, 180 juvenile pacu (10.80±0.77 g) were used; fish were fed diets containing 0, 25, 50, 75, and 100% replacement of corn by sorghum. The ADC of sorghum by fish were: 78.52% of DM; 74.82% of CP; 94.36% of EE; and 77.24% of GE. There were no differences among diets for the growth performance variables, somatic rates, and hematological parameters. However, for the centesimal composition of fillets, there were differences among treatments. Sorghum shows ADC similar to those of corn and can totally replace it in pacu juvenile diets, besides reducing formulation costs.

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Dietary supplementation of lysine and/or methionine on performance, nitrogen retention and excretion in pacu Piaractus mesopotamicus reared in cages

Cited by 43 publications

References 28 publications

Dietary Protein Source Influence on Body Size and Composition in Growing Zebrafish

Dietary Protein Source Influence on Body Size and Composition in Growing Zebrafish

Performance and hematology of pacu fed diets supplemented with vitamins C and/or E

Substituição do milho pelo sorgo em dietas para juvenis de pacu

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