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Poultry by-product meal as dietary protein source for dourado, Salminus brasiliensis: an economic appraisal Scientia Agricola
Donadelli,Renan Antunes; Aguilar,Fredy Armando Aguilar; Sonoda,Daniel Yokoyama; Cyrino,José Eurico Possebon.
ABSTRACT: The dourado, Salminus brasiliensis, a large, carnivorous, Neotropical, Characin, is highly regarded for fish farming and sport fishing alike. However, studies on the farming and husbandry of dourado are still scarce. This study evaluated the performance of dourado fed diets formulated so as to contain increasing levels of poultry by-product meal as a replacement for fish meal and aimed to identify the maximum level of replacement to maximize profit. The trial was set up in a closed recirculation system with controlled water quality (temperature 27 °C, dissolved oxygen 6.5 mg L−1, pH 7.4, and ammonia 0.25 mg L−1). Juvenile fish were stocked in tanks in a completely randomized design, acclimatized to system conditions and experimental diets, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish nutrition; Alternative feedstuffs; Economic evaluation.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001300190
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Partial substitution of fishmeal with soybean protein-based diets for dourado Salminus brasiliensis Scientia Agricola
Correa,Roselany de Oliveira; Aguilar,Fredy Armando Aguilar; Cruz,Thaline Maira Pachelli da; Sabioni,Rafael Estevan; Cyrino,José Eurico Possebon.
ABSTRACT Cost and environmental restrictions limit the use of fishmeal (FM) in aquafeeds and plant protein (PP) sources. Soybean by-products are important alternative; however, their antinutritional factors may reduce fish growth. This study evaluates the effect of FM substitution for PP (soybean meal and soy protein concentrate) in diets of dourado (Salminus brasiliensis), a promising species for fish farming and empirically considered highly tolerant to PP-based diets. A control diet was formulated to contain 20 % of fishmeal and 61 % of plant protein (SBM) and other five diets with decreasing FM graded levels (16 %, 12 %, 8 %, 4 %, 0 %), which were replaced by soybean protein concentrate (SPC), comprising six treatments and four replicates. Fifteen...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Enteritis; Aquaculture; Protein source; Gastrointestinal tract; Nutrition.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000200400
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Digestible energy and protein requirements for maintenance and growth of pacu ( Piaractus mesopotamicus ): A factorial approach-based model Scientia Agricola
Aguilar,Fredy Armando Aguilar; Mourão,Gerson Barreto; Cyrino,José Eurico Possebon.
ABSTRACT: Results of nutrient requirements as determined in dose-response trials are valid only for fish within the same size range of that of experimental model fish. This study used the factorial approach to estimate digestible energy (DE) and digestible protein (DP) requirements for maintenance and growth of pacu ( Piaractus mesopotamicus ). Juvenile pacu (63.5 ± 1.27 g) were stocked in a recirculation system (26.89 ± 0.36 °C) for 58 days, and fed two daily meals. One diet contained 6.96 % lipids (LF) and another 9.98 % lipids (HF), both diets formulated to contain 32 % crude protein, theoretical dietary energy level for maintenance (52.23 kJ DE kg−0.80 d−1), in a completely randomized, 2 × 5 factorial experimental design. The apparent digestibility...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Factorial modeling; Energy requirement; Dietary lipids; Digestibility; Energy utilization.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000600402
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