Simulative Digestion Gross Energy Technique for Goose Feed Evaluation
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Solution Overview
Problem
Current methods for evaluating the nutritional value of goose feed are inadequate, particularly in China, due to a lack of accurate and efficient techniques for assessing metabolizable energy, which hinders the transition from traditional free-range breeding to intensive breeding modes and fails to meet the growing demand for goose meat.
Innovation Solution
A simulative digestion gross energy technique is employed to rapidly and accurately measure the metabolizable energy of goose diet ingredients, using specific digestive enzymes and conditions to simulate the digestive process, allowing for the rectification of crude fiber values and correlation with apparent metabolizable energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional free-range breeding mode is used, then geese have strong disease resistance and can tolerate rough feeding, but the breeding efficiency is low and cannot meet the growing market demand
Solution Approach 1:
The patent changes the parameter of feeding mode from traditional free-range to intensive breeding with formulated feed, enabling higher productivity while maintaining goose health through scientifically balanced nutrition
2Measurement precision
If artificial ostomy is used to collect feces and urine separately, then metabolizable energy can be measured accurately, but the surgical operation causes side effects that prevent animals from returning to normal physiological state
Solution Approach 1:
The patent extracts only the necessary fecal collection function without performing surgical ostomy, using non-invasive methods to collect feces for metabolizable energy measurement, thus avoiding surgical side effects while maintaining measurement accuracy
Solution Approach 2:
The patent uses fecal collection bags or similar intermediary devices to collect feces externally, avoiding direct surgical intervention while enabling accurate metabolizable energy measurement
3Loss of information
If existing feed nutritional value databases from the 1990s are used, then data availability is maintained, but the databases cannot meet the needs of modern animal nutrition field development and lack accurate goose feed data
Solution Approach 1:
The patent performs preliminary determination of metabolizable energy values for various feed ingredients using the improved method, establishing a new database that serves as a foundation for future feed formulation and nutritional assessment
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides a precise evaluation of metabolizable energy, improving the accuracy of goose feed formulation and guiding the transition to intensive breeding practices, while ensuring the nutritional quality and efficiency of feed utilization.
Implementation Method 1
the digestive enzyme in the simulated gastric fluid is pepsin, and the concentration of the pepsin 1475 U/ml; the digestive enzyme in the simulated intestinal fluid is selected from trypsin, chymotrypsin, and amylase
Data Source
AI summary
Embodiments of the present disclosure belongs to the technical field of animal feed and provides a method for rapidly evaluating metabolizable energy of goose diet by using a technique of simulative digestion gross energy. By using the technical means combining the biological method and the simulative digestion gross energy technique, metabolizable energy of goose feed can be evaluated quickly. Based on the “stomach-small intestine” two-step enzymatic methods, it is the first time to establish a regression equation between the metabolizable energy change and fiber level in the cecum to rectify the value of simulative digestion gross energy in the cecal microbial digestion phase, making the simulative digestion gross energy technique more reasonable in the assessment of metabolizable energy in geese. Results show that the use of simulative digestion gross energy technique to assess the metabolizable energy of goose feed value is highly feasible.