Extending Egg Shell Damage Survey Results into the Field

Egg shell damage was evaluated in different parts of production and processing systems in various locations in the state of Indiana. Eggs were sampled and hand candled to determine damage at the cage or at the first access point in flat-deck systems, on the transfer belt for in-line systems; on flats if eggs were cased and shipped to the processing plant; ahead of the washer; after washing and candling; and in the carton. These locations were chosen because they represent potential damage sites. Damage ranged from a low of 0.0% at some locations to a high of 35% at others. The percent of cracked eggs tended to increase the further the eggs traveled in the processing procedure. Point of lay damage was found to average 3.5%, which was also the same as damage in the carton. By using surveys such as this combined with employee training programs, steps can be taken to minimize breakage.