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| Soares,Mariana; Fracalossi,Débora Machado; Freitas,Luiz Eduardo Lima de; Rodrigues,Marysol Santos; Redig,Joselle Cursino; Mouriño,José Luiz Pedreira; Seiffert,Walter Quadros; Vieira,Felipe do Nascimento. |
| ABSTRACTThe objective of this work was to evaluate the performance of Litopenaeus vannameifed different levels (0, 25, 50, 75, and 100%) of soybean protein concentrate (63.07% crude protein, CP) to replace fish meal-by product (61.24% CP). The study was conducted in clear water in fifteen 800 L tanks equipped with aeration systems, constant heating (29 ºC), and daily water exchange (30%). Each tank was stocked with 37.5 shrimp/m3 (3.03±0.14 g). Feed was supplied four times a day, at 6% of the initial biomass, adjusted daily. After 42 days, the weight gain of shrimp fed diets with 0 and 25% protein replacement was higher than that observed in shrimp fed 100% replacement, and there were no differences among those fed the other diets. Feed efficiency and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Growth; Litopenaeus vannamei; Nutrition; Protein replacement. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015001000343 |
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| Freitas,Luiz Eduardo Lima de; Silva,Tarcila Souza de Castro; Fracalossi,Débora Machado. |
| ABSTRACT: The determination of nutritional requirements, based on diets administered in practice, considers physiological specificities and sustainability are essential to the development of suitable aquaculture technologies for novel fish species. The growth of jundiá (Rhamdia quelen Quoy and Gaimard) juveniles (31.54 ± 4.92 g) fed five diets comprising increasing levels of digestible protein (DP: 24, 29, 34, 39, and 44 %) and digestible energy (DE: 12.13, 13.39, 13.81, 14.64, and 15.06 MJ kg−1) with DP:DE ratios: 20, 22, 25, 27, and 29 g MJ−1, respectively, was evaluated. Each diet was fed to three groups of 25 fish for 75 days. Regression analysis showed that the different DP:DE ratios affected both growth and economic performance as well as excretion... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DP:DE; Nutritional requirements; Nitrogen excretion; Practical diets. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000700402 |
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