By J.L. Vegad

ISBN-10: 8181891309

ISBN-13: 9788181891303

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Additional info for A Colour Atlas of Poultry Diseases: An Aid for Farmers and Poultry Professionals

Example text

E. coli can be found in litter and faecal matter. Dust in poultry houses may contain between one lakh to ten lakhs E. coli per gram . The bacteria persist for long periods, particularly when dust is dry. 4. E. coli can also be introduced into the poultry flocks through contaminated well water. Predisposing Factors These are those factors which make the bird easily prone to infection, and includ e: I. Contaminated water 2. Dry, dusty conditions. E. coli persist for long periods outside the bird 's body in dry, dusty conditions.

Such necrotic foci are highly suggestive of pullorum disease.

In severe cases, marked conjunctivitis (inflammation of conjunctiva) with closed eyes, swollen wattles, and difficulty in breathing can be seen. 2. Feed and water consumption is usually decreased. This results in a drop in egg production, or an increase in the culling (removal) of inferior, weaker, and worthless birds. Postmortem Findings I. Swelling of the face and wattle due to accumulation of fluid under the skin is marked (Fig. 75). 2. There is inflammation of the nasal passages and the space present below the eye.

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A Colour Atlas of Poultry Diseases: An Aid for Farmers and Poultry Professionals by J.L. Vegad

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