Method for evaluating metabolizable energy in goose diet by using a simulative digestion gross energy technique

A method for rapidly evaluating metabolizable energy of a goose diet by using a simulative digestion gross energy technique, comprising the following steps:

• measuring and calculating, for the diet, a value of simulative digestion gross energy of one or more fiber levels by using a simulative digestion gross energy technique, wherein the calculation using the simulative digestion gross energy technique utilizes parameters wherein:
• a digestive enzyme in the simulated gastric fluid is pepsin, and the concentration of the pepsin 1475 U/ml;
• a digestive enzyme in the simulated intestinal fluid is selected from trypsin, chymotrypsin, and amylase;
• and every 2000 ml of the simulated intestinal fluid contains 0.1900 g of trypsin, 0.0526 g of chymotrypsin and 4.45 ml of amylase solution;
• a digestion temperature both in the gastric phase and the in intestinal phase is in a range of 40.5-41.5° C.;
• and
• a digestion time in the gastric phase is 4-5 hours, and a digestion time in the intestinal phase is in a range of 12-16 hours;
• and
• providing one or more levels of crude fiber in the diet for rectifying the value of simulative digestion gross energy to obtain a rectified value of simulative digestion gross energy of the crude fiber in the diet.