<abstract xmlns="http://www.w3.org/1999/xhtml">Four diets were prepared to include a mixture of medium-chain fatty acids and taurine as a digestive/ metabolic enhancer (DME, AQUAGEST®) at 0, 1, 2, and 3 g DME/kg diet and fed to common carp (initial weight, 4.55±0.03 g) for 70 days. Dietary DME significantly increased the final weight, weight gain, specific growth rate, feed intake, and protein efficiency and decreased feed conversion ratio in a dose-dependent manner (P&lt;0.05). The body lipid composition was significantly improved by feeding DME at 2 g/kg diet (P=0.0141). The intestine villus length and the number of goblet cells were significantly increased in fish fed 2 g DME/kg diet (P&lt;0.05). The intestinal villi displayed increased length, branching, and density by supplementing DME to common carp diets. Fish fed DME at 2 g/kg diet displayed markedly decreased aspartate aminotransferase (AST) and alanine aminotransferase (ALT ) (P=0.025 and P=0.043) and increased total protein and globulin (P =0.002 and P=0.003). Additionally, fish fed 2 and 3 g DME/kg levels displayed significantly increased albumin levels (P=0.006). Lysozyme and phagocytic activities were increased by feeding DME at 2 g/kg diet, while the phagocytic index increased by 2 and 3 g/kg diet (P&lt;0.05). The optimal supplementation level of DME is 1.63 to 2.05 g/kg for common carp based on the polynomial regression analysis. In conclusion, common carp fed diets with a mixture of medium-chain fatty acids and taurine displayed improved growth, digestion activity, and immune response.</abstract>

Four diets were prepared to include a mixture of medium-chain fatty acids and taurine as a digestive/ metabolic enhancer (DME, AQUAGEST®) at 0, 1, 2, and 3 g DME/kg diet and fed to common carp (initial weight, 4.55±0.03 g) for 70 days. Dietary DME significantly increased the final weight, weight gain, specific growth rate, feed intake, and protein efficiency and decreased feed conversion ratio in a dose-dependent manner (P<0.05). The body lipid composition was significantly improved by feeding DME at 2 g/kg diet (P=0.0141). The intestine villus length and the number of goblet cells were significantly increased in fish fed 2 g DME/kg diet (P<0.05). The intestinal villi displayed increased length, branching, and density by supplementing DME to common carp diets. Fish fed DME at 2 g/kg diet displayed markedly decreased aspartate aminotransferase (AST) and alanine aminotransferase (ALT ) (P=0.025 and P=0.043) and increased total protein and globulin (P =0.002 and P=0.003). Additionally, fish fed 2 and 3 g DME/kg levels displayed significantly increased albumin levels (P=0.006). Lysozyme and phagocytic activities were increased by feeding DME at 2 g/kg diet, while the phagocytic index increased by 2 and 3 g/kg diet (P<0.05). The optimal supplementation level of DME is 1.63 to 2.05 g/kg for common carp based on the polynomial regression analysis. In conclusion, common carp fed diets with a mixture of medium-chain fatty acids and taurine displayed improved growth, digestion activity, and immune response.

Supplementation of AQUAGEST® as a Source of Medium-Chain Fatty Acids and Taurine Improved the Growth Performance, Intestinal Histomorphology, and Immune Response of Common Carp (<italic>Cyprinus carpio</italic>) Fed Low Fish Meal Diets

Department of Animal Production, Faculty of Agriculture

Department of Animal and Aquatic Sciences, Faculty of Agriculture

Annals of Animal Science

This work is licensed under the Creative Commons Attribution 4.0 International License.

Supplementation of AQUAGEST as a Source of Medium-Chain Fatty Acids and Taurine Improved the Growth Performance, Intestinal Histomorphology, and Immune Response of Common Carp () Fed Low Fish Meal Diets

Four diets were prepared to include a mixture of medium-chain fatty acids and taurine as a digestive/ metabolic enhancer (DME, AQUAGEST®) at 0, 1, 2, and 3 g...

Supplementation of AQUAGEST^® as a Source of Medium-Chain Fatty Acids and Taurine Improved the Growth Performance, Intestinal Histomorphology, and Immune Response of Common Carp (Cyprinus carpio) Fed Low Fish Meal Diets

Published Online: Nov 07, 2020

Page range: 1453 - 1469

Received: Feb 17, 2020

Accepted: Apr 22, 2020

DOI: https://doi.org/10.2478/aoas-2020-0046

Keywords
medium-chain fatty acids, taurine, common carp, growth performance, intestinal histomorphology, immune response

© 2020 Fawzy I. Magouz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Supplementation of AQUAGEST® as a Source of Medium-Chain Fatty Acids and Taurine Improved the Growth Performance, Intestinal Histomorphology, and Immune Response of Common Carp (Cyprinus carpio) Fed Low Fish Meal Diets

Published Online: Nov 07, 2020

Page range: 1453 - 1469

Received: Feb 17, 2020

Accepted: Apr 22, 2020

DOI: https://doi.org/10.2478/aoas-2020-0046

Keywordsmedium-chain fatty acids, taurine, common carp, growth performance, intestinal histomorphology, immune response

© 2020 Fawzy I. Magouz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Supplementation of AQUAGEST^® as a Source of Medium-Chain Fatty Acids and Taurine Improved the Growth Performance, Intestinal Histomorphology, and Immune Response of Common Carp (Cyprinus carpio) Fed Low Fish Meal Diets

Keywords
medium-chain fatty acids, taurine, common carp, growth performance, intestinal histomorphology, immune response