VI RAL 0 I SEASES
A COLOUR ATLAS OF POULTRY DISEASES
Fig. 18. Marek's disease . Characteristic posture of a 29-week-old layer chicken showing extension of one leg and retraction of the other. This is typical of Marek's disease.
Fig. 19. Marek's disease. Another 29-week-old layer chicken showing a somewhat similar posture typical of Marek's disease.
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