United States Egg-Grading Manual

AUnited StatesDepartment ofAgricultureAgriculturalMarketingServic eAgricultural Handbook Number 75 Egg-GradingManualiContentsI. Production and Maintenance of Egg and ..3 Feeding ..3 Care of Eggs on the Farm ..4 Egg-processing Facilities ..4 Buildings and Premises ..5 Washing, Grading, and Packing Operations and Equipment ..6 Cooling Facilities ..9 Health and Cleanliness of Employees ..10 Distribution ..10 III. Structure, Composition, and Formation of the Egg ..11 Physical Structure ..11 Composition .. of the of the of the Shell of the of Quality of Exterior Quality Shape and of of Interior Quality ..20 Interior Quality ..22 White (Albumen)..24 Loss Standards, Grades, and Weight Classes for Shell Standards for Quality of Individual Shell Consumer Grades and Weight Classes for Shell Nest Run Grade and Weight Classes for Shell Grades and Weight Determining Interior Quality by Hand Candling Candling Candling Determining Interior Quality by the Breakout Control Egg Grading and Certification Grading of Official Grade Labeling and Certification to Specific Purchase Shell Plant Sanitation and Good Manufacturing Practices (PSGMP) Legislation Affecting Grading and Marketing of Egg Quality Schools and Training Resource Mat

specialists in the pullet-raising field. The brooding period usually involves the first 6 to 8 weeks of the chick’s life and is the most critical period for the bird in reaching its full potential. Temperature, feed, water, and environ-mental stress must be controlled and monitored continu-ously. A properly managed feeding program assures uni-

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