Precise Testing Scheme for Poultry Eggshell Strength
Overview
Eggshell strength is one of the core indicators for measuring poultry egg quality, directly related to the economic benefits of breeding production and the safety of product circulation. As an important evaluation criterion for the production performance of breeding chickens and laying hens, eggshell strength not only affects the hatching rate of breeding eggs and the quality of chicks but also plays a decisive role in the shelf life and transportation loss rate of commercial eggs. Currently, some chicken farms suffer serious economic losses due to poor eggshell quality, which leads to problems such as transportation damage and storage deterioration. Therefore, accurately testing eggshell strength and mastering core data have become a key demand in breeding, processing, and circulation links.
Experimental Purpose
By scientifically testing the maximum pressure that eggshells can withstand, this experiment aims to accurately determine the quality grade of poultry eggs and provide data support for breeding optimization, product grading, and circulation protection. Following industry general testing standards, this experiment adopts the ST120H Eggshell Strength Tester, which integrates modern mechanical design concepts and microcomputer processing technology, featuring high precision and intelligence to achieve rapid and accurate measurement of eggshell strength.
Experimental Samples and Instruments
- Experimental samples: Chicken eggs, duck eggs, goose eggs (covering common poultry egg varieties with different shell thicknesses)
- Experimental instruments: ST120H Eggshell Strength Tester (including main unit, power cord, printing paper, and supporting egg tray), cleaning reagents, and other auxiliary accessories
Operational Steps
1. Check in advance whether the instrument's power supply matches the AC220V 50Hz standard, and ensure the ambient temperature is (20±10)℃ with relative humidity below 85% for suitable operating conditions.
2. Wash and dry the poultry eggs to be tested, place them stably on the special egg tray, and then put the egg tray and eggs together in the center of the instrument's test platform to ensure the eggs are firmly placed.
3. Connect the power supply and turn on the instrument to directly enter the test interface. Configure the test scheme by setting parameters such as test speed (default 100mm/min, adjustable as needed), sample name, and sample number via the touch screen.
4. Click the "Test" button on the main interface to start the test program. The pressure plate applies pressure steadily at the preset speed, and the system collects and displays data such as pressure and displacement in real time.
5. When the eggshell breaks, the instrument automatically determines the maximum force value, stops applying pressure, and records the data, supporting one-click printing of test results. For continuous testing, there is no need to shut down the instrument; simply place the next sample and click "Continue Test".
6. After the experiment, click the "Return" and "Zero" buttons, clean the test platform and egg tray, and turn off the power supply.
Data Analysis and Result Evaluation
Batch testing of different varieties and batches of poultry eggs using the ST120H Eggshell Strength Tester shows that the instrument has a measurement range of 5~500N, a resolution of 0.1N, and a relative error of only 1%, fully meeting the precision requirements of daily testing. The eggshell strength of chicken eggs is generally 30~50N, duck eggs 45~65N, and goose eggs 60~85N, all within the normal strength range of respective poultry egg varieties. The instrument can automatically calculate the maximum value, minimum value, and average value of multiple groups of samples. The tested data, after printing or storage, can be directly used for breeding scheme optimization and commercial egg grading standard formulation, effectively reducing the risk of damage during circulation and providing reliable technical support for the standardized quality control of the poultry egg industry.