Egg collection, sorting and grading: the key stages

In brief. From nest to dispatch, every handling step should preserve egg integrity, lot identity and environmental hygiene. Collection, quality sorting, weight grading and packing are separate operations. An attractive shell or a large size cannot replace a documented food-safety and traceability process.

Collect regularly and identify immediately

Regular collection reduces time in the nest, knocks and accumulation. Morocco’s 2024 specification for the officially recognised “Eggs from free-range hens” label requires operators under that specific label to collect at least twice a day and to collect all covered eggs on the day of lay. This is a useful organisational reference, but it proves no Mamati certification.

A tray receives lot information during collection: date, flock or house, and sequence where needed. Reconstructing it later from memory creates gaps. Reusable trays follow a cleaning route and do not circulate freely between clean and poultry areas.

Protect shells and separate non-conforming eggs

Broken, cracked or heavily soiled eggs are isolated under the food-safety procedure so they cannot contaminate intact eggs. Visual inspection needs adequate light and clean hands and surfaces. Hairline cracks may be hard to see; candling or other checking equipment requires trained operation.

Washing table eggs is not a universal solution. Its acceptability depends on local law, the process and control of water temperature and hygiene. A domestic habit should not be transferred to a packing centre. The operator follows current Moroccan requirements and its approved control plan.

Sorting is not weight grading

Quality sorting checks condition and defined defects; grading separates by weight. Scales or graders are verified and maintained. Commercial categories and tolerances come from the applicable rules or specification. The letters M, L or XL do not, by themselves, state taste, nutrition or production system.

Hen age, strain, diet and stage of lay influence weight. Calling a larger egg automatically “better” would be misleading. For a professional kitchen, consistent size mainly supports recipe yield, portion cost and cooking time.

Pack with information that can be checked

The box or tray protects against impact, remains clean and displays required information. Lot, date and origin should not be replaced by a vague slogan. Housing, label and nutrition claims require evidence and, where relevant, official recognition or product analysis.

ONSSA states that authorised egg-packing and processing units need a self-checking and traceability system. The Moroccan free-range-label specification requires sorting, marking, packing and storage of the covered eggs in authorised packing centres.

Keep the lot intact through storage and dispatch

Lots remain separated or clearly identified. First-in-first-out rotation uses actual dates. The storage area is clean, protected from strong odours and managed to avoid excessive variation. Exact conditions belong to the local safety plan; abrupt temperature changes that may encourage condensation on the shell should be avoided.

At loading, the dispatch record links customer, quantity, pack and lot. In a complaint or recall, the business needs to retrieve where the eggs came from and where they went.

Use simple release checks

A sample confirms weight, integrity, pack cleanliness, label legibility and agreement with the order. Measuring equipment follows a verification schedule. Errors are recorded and corrected at their source rather than hidden at the last step.

Operator training matters as much as machinery. An illustrated guide supports defect recognition, while doubtful cases are held for a decision. A second check is especially useful when lot, label or size changes.

A practical shift handover

At the end of a shift, the outgoing operator records the last lot processed, quantities waiting, held product, labels in use and any equipment issue. The incoming operator verifies the physical situation before restarting. This brief handover prevents a half-finished lot from being packed under the next label and makes responsibility clear.

Cleaning release is separate from product release. The line is checked for shell fragments, liquid egg, obsolete labels and tools. Only then is the next lot brought forward. If a scale or grader has been adjusted, a known test weight confirms performance and the result is recorded. When an error affects packed product, the relevant cases are isolated first; the investigation comes before rework or dispatch.

What the customer can verify

A professional buyer should be able to identify the product, stated size, pack quantity, date and lot information supplied. If a pack claim is unclear, the buyer can request the specification instead of inferring quality from colour or branding. A transparent supplier distinguishes a legal or certified claim from a house description and can explain which records support it.

Limits and transparency

Exact labelling and grading rules can change. The responsible operator must consult current Moroccan texts and ONSSA. This article explains a control chain without certifying Mamati’s centre, lots or current methods.