Absorption of Macronutrients in Teleost

Abstract

Teleost efficiently uses macronutrients to sustain growth, metabolism and development. Generally, the small and solubilized nutrients that have been released during digestion of compound dietary assets within the digestive lumen are successively transported across the brush border membrane following a concentration gradient either by simple diffusion or by the help of specific transporters that can carry nutrients across the membrane, independent of the concentration gradient. From the enterocytes nutrients subsequently travel across the basolateral membrane to the circulatory system. The aim of the present article is to assemble the existing knowledge under one umbrella focusing on the nutrient transporter systems of the intestinal absorptive enterocytes of different teleost fishes. It was found that the whole digestive tract of the fish was not equally capable of absorbing nutrients. Moreover, there are several internal physiological as well as external chemical and environmental factors that can affect the absorption of macronutrients in teleost.