£199.99 £139.99 for one year of Unlimited learning. Offer ends on 14 November 2022 at 23:59 (UTC). T&Cs apply

Find out more
Fowl cholera
Skip main navigation

Fowl cholera

Article discussing the systemic disease 'fowl cholera'.
Photo of a chicken suffering from fowl cholera.
© University of Nottingham and the British Hen Welfare Trust

This is a systemic infection caused by the bacterium Pasteurella multocida. Related strains of this bacterium cause respiratory and systemic diseases in a variety of animals including pigs and companion animals but there is no evidence of cross infection by the different types.

Infection occurs generally by the respiratory route but it is really a septicaemia. Disease may be acute with high mortality. Anaemia and diarrhoea occur and excess mucus production from the beak may be evident. Diagnosis from the acute infection can be done with birds that have died from a smear made from the cut liver. This will reveal large numbers of Gram-negative bacteria in pairs surrounded by a capsule which will not be seen with viral infections. A more chronic form of the disease is associated with swelling of the comb or wattles.

It is difficult to eradicate this infection. Antibiotic treatment can stop outbreaks but all birds must be treated since some birds may be carriers.

© University of Nottingham and the British Hen Welfare Trust
This article is from the free online

Poultry Health

Created by
FutureLearn - Learning For Life

Our purpose is to transform access to education.

We offer a diverse selection of courses from leading universities and cultural institutions from around the world. These are delivered one step at a time, and are accessible on mobile, tablet and desktop, so you can fit learning around your life.

We believe learning should be an enjoyable, social experience, so our courses offer the opportunity to discuss what you’re learning with others as you go, helping you make fresh discoveries and form new ideas.
You can unlock new opportunities with unlimited access to hundreds of online short courses for a year by subscribing to our Unlimited package. Build your knowledge with top universities and organisations.

Learn more about how FutureLearn is transforming access to education