Splanchnic net release and body retention of nitrogen in growing lambs fed diets unbalanced for energy and protein

摘要

Nutritional allowances to Ruminants are defined for both protein and energy in the diet, but animal metabolic responses to unbalanced diet, either in protein or in energy, are difficult to predict. They have generally been studied using an excess supply in one or another nutrient (Savary-Auzeloux et al., 2003). The present work focusses on the influence of a nutritional deficit in either energy or protein. The objective was to quantify the net fluxes of the major nitrogenous nutrients across the splanchnic tissues (TSP) and compare them with nitrogen retention data to identify the tissues/organs responsible for metabolic adaptation.