Chronic respiratory disease (CRD) is one of the most common causes of disease in backyard fowls mostly now that we are in the harmattan and everywhere seems dusty with dry air all over. CRD occurs when chickens and turkeys that are infected with Mycoplasma gallisepticum are stressed. The bacteria then causes major damage to the bird's respiratory system. Mycoplasma gallisepticum spreads via eggs, airborne transmission and indirect or mechanical routes such as introducing infected birds to an existing flock, or via bird transport containers. Mycoplasma gallisepticum can reside in a flock with few indications of its presence until the flock or individuals in it are stressed sufficiently to show signs of respiratory disease. Signs of CRD The signs of CRD are sniffling, sneezing, coughing and other signs of respiratory distress. When suspected, observe the birds from a distance to get a good idea of the symptoms as birds often do not display signs of disease once caught.
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