Promoting quality: an
Practical solutions to eliminate fecal shell
The safe alternative
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There is a high awareness on egg quality in our industry based on receiving a number of responses that were on target.
The ;rst of the real-life problem situations
dealt with fecal staining of shells from a white-feathered ;ock housed in an old facility. This
defect is usually due to soiling of eggs hanging
back in cages with sagging ;oors or alternatively contamination on dirty belts.
The immediate in-plant solutions involve:
✔Ensuring correct operation and sensitivity
of the dirt detector.
✔If a candling booth is installed, removal of
grossly soiled “dirties” is necessary. If throttle
settings are near grader capacity an extra candler will be required to reduce the inspection
load to six spindles.
✔The temperature of washers should be
raised to between 120 F and 125 F with a pH
of 11 to 12. Sanitizer concentration should be
between 100 and 150 ppm chlorine with a surfactant to enhance cleaning.
The longer term approach is to adjust the
slope of cage ;oors (if possible) to facilitate
rollout or to consider re-caging of an obsolete
installation at the end of its functional life.
A few respondents commented on wet
droppings as a cause. Good point. If high water
intake during summer leads to diuresis and diarrhea, retro;tting roof insulation and improving ventilation should be considered. Never
impose water restriction in hot weather. Rarely
is excess salt or limestone contaminated with
magnesium responsible for wet droppings but
nutrient content can be assayed as errors do occur in feed plants.
Thank you for your interest. EI
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