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Influence of Egg Weight on Egg Breakage in the Field

Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 0W0, Canada; Phone: (306) 966-6597; FAX: (306) 966-4151

Correspondence: Carlyle D. Bennett

The weights of cracked and intact eggs were compared in 24 commercial Leghorn flocks at 35-40, 52-58, and 65-70 weeks of age. For eggs weighed before traveling through the egg handling and collection system, cracked eggs were 1.2 g/egg heavier than non-cracked eggs at 52-58 weeks of age, but no difference was observed at the other two ages. For eggs that had been collected and trayed, the role played by egg weight in shell damage depended on how the eggs were packed into trays. If eggs were packed by hand, no differences were found between the weights of cracked and intact eggs. If eggs were packed mechanically, cracked eggs were 1.3 g/egg larger than the non-cracked eggs at 65-70 weeks of age.

Key Words: Egg weight • cracks • shell damage