Effects of dietary NaCl on the in vivo apparent absorption of dietary nutrients determined in rainbow trout (Oncorhynchus mykiss)

Nakajima, Mai; Sugiura, Shozo

doi:10.1016/j.aquaculture.2016.04.003

Cited by 5 publications

(4 citation statements)

References 52 publications

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“…The supplementation of NaCl to the feed improved protein digestibility. A recent study that analyzed chime composition in rainbow trout ( Oncorhynchus mykiss ) also found an effect of dietary NaCl on protein absorption [ 13 ]. The mechanism behind this NaCl-dependent increase in protein utilization is not known.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies have shown that the addition of salt to the fish feed has a significant impact on growth, feed utilization and physiological parameters in the intestine and blood [ 8 – 13 ]. Studies aimed at understanding the specific effects caused by dietary salt supplementation, found effects on both the basic intestinal enzymatic activity [ 12 ], and on the intestinal bacterial populations [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Dietary salt levels affect digestibility, intestinal gene expression, and the microbiome, in Nile tilapia (Oreochromis niloticus)

et al. 2018

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Nile tilapia (Oreochromis niloticus) is the world’s most widely cultured fish species. Therefore, its nutritional physiology is of great interest from an aquaculture perspective. Studies conducted on several fish species, including tilapia, demonstrated the beneficial effects of dietary salt supplementation on growth; however, the mechanism behind these beneficial effects is still not fully understood. The fish intestine is a complex system, with functions, such as nutrient absorption, ion equilibrium and acid-base balance that are tightly linked and dependent on each other's activities and products. Ions are the driving force in the absorption of feed components through pumps, transporters and protein channels. In this study, we examined the impact of 5% increase in dietary NaCl on protein, lipid, ash and dry matter digestibility, as well as on the expression of intestinal peptide transporters (PepTs) and ion pumps (Na+/K+-ATPase, V-H+-ATPase, N+/H+-Exchanger) in Nile tilapia. In addition, effects on the gut microbiome were evaluated. Our results show that dietary salt supplementation significantly increased digestibility of all measured nutritional components, peptide transporters expression and ion pumps activity. Moreover, changes in the gut microbial diversity were observed, and were associated with lipid digestibility and Na+/K+-ATPase expression.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dietary salt levels affect digestibility, intestinal gene expression, and the microbiome, in Nile tilapia (Oreochromis niloticus)

et al. 2018

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“…Experimental purified casein‐based diet followed formulation of Nakajima and Sugiura () with some modifications (Table ). According to our obtained results from in vitro studies (Kousha et al, ), the dietary sodium selenite levels of this study was determined.…”

Section: Methodsmentioning

confidence: 99%

Synergistic effect of sodium selenite and Pediococcus acidilactici on growth, intestinal bacterial counts, selenium bioavailability, hepatic enzymes and non‐specific immune response in rainbow trout ( Oncorhynchus mykiss )

Kousha

Amirkolaie

2019

Aquacult Nutr

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Lactic acid bacteria (LAB) have a crucial role in inorganic selenium metabolism as well as their known desirable effects on fish. In this study, the synergistic effects of dietary sodium selenite and Pediococcus acidilactici on growth performance, intestinal bacterial counts, selenium bioavailability, hepatic antioxidant enzyme thioredoxin reductase activity and hepatic glycolytic enzyme activity that is hexokinase, phosphofructokinase and pyruvate kinase, and non-specific immune response such as serum lysozyme and complements C 3 , C 4 and ACH 50 activity in rainbow trout (Oncorhynchus mykiss) were investigated. Thus, a 3 × 3 factorial design experiment was conducted with nine purified diets including three levels of sodium selenite (0, 1 and 2 mg/kg) and three levels of P. acidilactici (0, 7 and 9 log CFU/g). After 8 weeks of feeding, weight gain and specific growth rate were increased by increasing dietary sodium selenite and P. acidilactici levels compared to control (p < .05), whereas feed conversion ratio and condition factor was decreased by increasing dietary sodium selenite and P. acidilactici amounts in comparison with control (p < .05). Survival rate was not significantly affected among the experimental treatments (p > .05). Total cultivable bacterial populations after 4 and 8 weeks of the feeding trial were not significantly different among the dietary treatments, while LAB levels were higher in P. acidilactici-fed groups than in control and selenium-fed groups (p < .05). Selenocysteine, methylselenocysteine and selenomethionine levels in the intestine of rainbow trout were increased by increasing the sodium selenite and P. acidilactici levels (p < .05), and selenocysteine was found the most selenium species in the trout intestine. The quantity of total selenium in the whole body, intestine, blood, liver and muscle of rainbow trout were increased by increasing the amounts of sodium selenite and P. acidilactici compared to control (p < .05). Hepatic thioredoxin reductase and hexokinase activity were increased by increasing dietary selenium and P. acidilactici levels in comparison to control (p < .05), whereas phosphofructokinase and pyruvate kinase activity in the liver of rainbow trout were not significantly different between the dietary treatments. Serum lysozyme, complements C 3 , C 4 and ACH 50 activity were enhanced by | 75 KOUSHA et Al.

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“…Bahan elektrolit seperti garam memiliki peran yang penting bagi tubuh hewan, termasuk pada ikan. Keberadaan garam dapat mempengaruhi aktifitas enzimatis di saluran pencernaan sehingga berpengaruh pada tingkat kecernaan pakan (Eroldoğan et al, 2005;Harpaz et al, 2005;Nakajima & Sugiura, 2016). Unsur natrium yang ada pada garam juga diperlukan oleh beberapa jenis protein membran di permukaan epitelium saluran pencernaan yang bertugas untuk menyerap nutrien (Althoff et al, 2006;Bakke et al, 2010;Freire et al, 1995;Geillinger et al, 2014).…”

Section: Pendahuluanunclassified

Performa Pertumbuhan Nilem (Osteochilus vittatus) yang Diberi Pakan dengan Suplementasi Garam

Syakuri,

Pramono,

Ekasanti

et al. 2024

Sainteks

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Suplementasi garam dalam pakan ikan mempunyai peluang meningkatkan efisiensi produksi perikanan budidaya melalui peningkatan pertumbuhan ikan. Tujuan penelitian ini adalah mengkaji performa pertumbuhan Nilem (Osteochilus vittatus) yang diberi pakan dengan suplemen garam. Penelitian eksperimen dilaksanakan menggunakan rancangan acak lengkap, terdiri atas lima perlakuan dan enam ulangan. Perlakuan berupa suplementasi garam dengan dosis 0% (kontrol), 1%, 2%, 3%, dan 4%. Benih ikan (2,3 ± 0,16 g) dipelihara dalam sistem resirkulasi menggunakan wadah berisi 40 liter air dengan kepadatan 15 ekor per wadah dan diberi pakan uji selama 30 hari. Pertumbuhan ikan dan kualitas air diamati secara periodik. Hasil penelitian menunjukkan kelompok ikan yang diberi suplementasi 3% garam memiliki pertumbuhan yang tidak signifikan lebih baik berdasarkan pertambahan berat, relative growth rate (RGR) dan specific growth rate (SGR). Ikan perlakuan 2% garam menunjukkan faktor kondisi yang cenderung lebih tinggi dibandingkan ikan perlakuan lain, namun tidak signifikan secara statistik. Suplementasi garam tidak meningkatkan pertumbuhan ikan secara nyata namun berpotensi dapat membuat produksi budidaya Nilem menjadi lebih efisien.

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Effects of dietary NaCl on the in vivo apparent absorption of dietary nutrients determined in rainbow trout (Oncorhynchus mykiss)

Cited by 5 publications

References 52 publications

Dietary salt levels affect digestibility, intestinal gene expression, and the microbiome, in Nile tilapia (Oreochromis niloticus)

Dietary salt levels affect digestibility, intestinal gene expression, and the microbiome, in Nile tilapia (Oreochromis niloticus)

Synergistic effect of sodium selenite and Pediococcus acidilactici on growth, intestinal bacterial counts, selenium bioavailability, hepatic enzymes and non‐specific immune response in rainbow trout ( Oncorhynchus mykiss )

Performa Pertumbuhan Nilem (Osteochilus vittatus) yang Diberi Pakan dengan Suplementasi Garam

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