Effects of dietary glutamate and succinate on growth performance and mitochondrial respiration in heart and liver of Atlantic salmon (Salmo salar) smolts

• Published in: Journal of Fisheries
• Main Authors: Naveenan, Manoharan, Olsen, Rolf Erik, Egelandsdal, Bjørg
• Format: Article in Journal/Newspaper
• Language: English
• Published: BdFISH, Department of Fisheries, University of Rajshahi, Rajshahi 6205, Bangladesh 2019
• Subjects: Atlantic salmon; mitochondria; succinate; glutamate; respiration; high resolution respirometry; Salmo salar
• Online Access: https://journal.bdfish.org/index.php/fisheries/article/view/JFish_335; https://doi.org/10.17017/j.fish.2

The smolt stage of salmon has challenges in reaching adequate growth rates due to the changing environmental conditions at sea. Therefore, it is necessary to provide adequate diets to achieve sufficient growth. This study determined the impacts of glutamate and succinate (1% each) supplemented diet on the growth of Atlantic salmon smolts along with characterization of mitochondrial respiration using high-resolution respirometry technique. Results indicated that there was no significant difference in growth response between the treatment and control groups. Maximum oxidative phosphorylation (OXPHOS) was reached after addition of succinate. Analysis of heart homogenates revealed a significant difference in LEAK respiration state (P = 0.005). No significant difference was recorded between the diet groups for liver homogenates. Differences between heart and liver respiration revealed that mitochondrial activity is organ dependent.