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Pinholes

Description and Incidence

Pinholes, or very small holes in the egg shell, usually affect less than 0.5% of total production.

Cause Control
May result from faulty laying down of the egg shell or from pimples being knocked off the shell. Both problems are thought to be associated with:
Ageing of bird Keep flock age as low as economically possible.
Poor nutrition Prevent excess calcium intake in winter.
Strain of bird Choose a strain which produces eggs with a lower incidence of this fault.
Damage from toenail points or other small sharp projections Make sure that cage floor slope is enough to allow eggs to roll away easily from the birds. Remove sharp projections on cages and roll-out trays.
COPYRIGHT NOTICE: OPTIMUM EGG QUALITY - A PRACTICAL APPROACH
© The State of Queensland, Australia (through its Department of Primary Industries and Fisheries) and DSM Nutritional Products Ltd., 2007. No part of this publication may be reproduced, copied or transmitted save with prior written permission of Director, Intellectual Property Commercialisation Unit, Department of Primary Industries and Fisheries, GPO Box 46 Brisbane, Queensland, Australia 4001, and DSM Nutritional Products Ltd.

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