Growth, body composition, and hematology of yellowfin seabream ( Acanthopagrus latus ) given feeds supplemented with org
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Growth, body composition, and hematology of yellowfin seabream (Acanthopagrus latus) given feeds supplemented with organic acid salts (sodium acetate and sodium propionate) Mohammad Sangari 1 & Ebrahim Sotoudeh 1 Mansour Torfi Mozanzadeh 3
1
2
& Dara Bagheri & Salim Morammazi &
Received: 14 July 2020 / Accepted: 18 November 2020/ # Springer Nature Switzerland AG 2020
Abstract
Effects of adding organic acid salts (OAS) to plant protein (PP)–rich feeds were evaluated in a trial with juvenile yellowfin seabream (Acanthopagrus latus) (initial weight ca 6.5 g). Fish were given iso-nitrogenous (ca. 48% protein) and iso-caloric (ca. 19.6 kJ g−1) feeds supplemented with sodium acetate (SA) and sodium propionate (SP): SP5 (5 g SP kg−1), SP10 (10 g SP kg−1), SA5 (5 g SA kg−1), SA10 (10 g SA kg−1), and SP+SA (5 g SP kg−1 + 5 g SA kg−1). A PP-rich feed without OAS supplementation was the control. There were 3 replicates for each treatment and trial duration was 8 weeks, during which time the fish were kept in 60-L tanks (10 fish per tank) and fed to satiation twice each day. At the end of the trial, growth performance, feed utilization, whole-body proximate composition, and hemato-biochemical parameters were analyzed. Final weights in SP5 (14.61 g), SP10 (14.14 g), and SP+SA (14.29 g) groups were remarkably higher than the control (11.18 g). The highest and the least feed conversion ratio values were in the control (1.71) and SP5 (1.19) groups, respectively. Wholebody proximate composition did not change among groups. Blood hemoglobin contents in fish fed the OAS-supplemented diets were between 7.44 and 7.88 g dL−1 that was higher than the control (6.47 g dL−1). Fish fed on the OAS-incorporated diets had greater amounts of plasma total protein (6.0–6.94 g dL−1) compared to the control (5.06 g dL−1). According to the findings of this study, administrating 5 g SP kg−1 of a PP-rich diet is recommended for improving growth and welfare of A. latus juveniles.
* Ebrahim Sotoudeh [email protected]
1
Department of Fisheries, Faculty of Marine Science and Technology, Persian Gulf University, Bushehr 75169, Iran
2
Department of Animal Science, Faculty of Agricultural and Natural Resources, Persian Gulf University, Bushehr 75169, Iran
3
Agriculture Research, Education and Extension, South Iran Aquaculture Research Center, Iran Fisheries Science Research Institution (IFSRI), Ahwaz, Iran
Aquaculture International
Keywords Feed additives . Feed utilization . Health indices . Plasma metabolites . Sparidae
Introduction Terrestrial plant ingredients make up a major part of aquafeeds and supported the sustainability of aquafeed industry (Gatlin et al. 2007; Hardy 2010). However, formulation of plant protein (PP)–rich diets especially for carnivorous fish species is challenging due to the existence of anti-nutrients (e.g., tannins, saponins, lectins, phytate, and protease inhibitors) and non-starch polysaccharides (e.g., cellulose, xylan and pectin), deficiencies or imbalances in their amino acid profiles, and low bioavailabil
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