Bacterial diseases - colisepticemia, Biology

Bacterial diseases

Colisepticemia

Colisepticemia, also known as colibacillosis caused by Escherichia coli, is the commonest disease condition in ill-managed organized poultry units. E. coli is part of the normal healthy intestinal microflora in chickens as well as other animals but act as a pathogen under immunosuppressive conditions, poor nutrition and management or severe stress. The disease occurs either as an acute generalized fatal from or chronic debilitating from. The morbidity varies whereas mortality is 5-20% but may be higher when associated with other co-existing diseases like mycoplasmosis. The infectious agent is moderately resistant in the environment, but is susceptible to common disinfectants.

Infection spreads generally via feed and water but manual contamination of fertile eggs may lead to hatching of infected chicks. Transmission is also possible by inhalation and via fomites.

Symptoms and lesions: The clinical symptoms are distended abdomen and tendency to huddle. The chicks and growers may show higher mortality, ruffled feathers, diarrhoea, pasty vents, respiratory signs like coughing, sneezing, loss of appetite, poor growth, and omphalitis; whereas the adult and laying birds show variable symptoms including drop in egg production.

Significant post-mortem (PM) changes include air sacculitis, congested or pneumonic lungs, pericarditis, enlargement of liver and spleen, peritonitis, salpingitis, enteritis and presence of pseudo-membranes over visceral organs. Some strains of E.

Table- OIE classification of List A and B diseases

               Bacterial diseases                                                   Classification

 

 

l

Colibacillosis/colisepticemia

-

l

Salmonella infections

-

l

Bacillary white diarrhoea (Salmonella Pullorum)

OIE List B

l

Fowl typhoid (Salmonella Gallinarum)

OIE List B

l

Paratyphoid infections

-

l

Fowl cholera (pasteurellosis)

OIE List B

l

Duck septicemia

-

l

Erysipelas

-

l

Infectious coryza

-

l

Listeriosis

-

l

Campylobacter infection

-

l

Ulcerative enteritis (quail disease)

-

l

Necrotic enteritis

-

l

Gangrenous dermatitis (necrotic dermatitis)

-

l

Botulism

-

l

Tuberculosis

OIE List B

l

Spirochaetosis

-

l

Mycoplasma infections incl. CRD

OIE List B

l

Chlamydiosis, ornithosis/psittacosis,

OIE List B

Fungal diseases

l

Aspergillosis

-

l

Candidiasis / moniliasis (thrush)

-

l

Mycotoxicosis

-

Viral diseases

l

Avian encephalomyelitis

-

l

Avian infectious bronchitis

OIE List B

l

Avian influenza

OIE List A

l

Avian leukosis (sarcoma group of retroviruses)

-

l

Chicken infectious anaemia

-

l

Duck plague/ duck virus enteritis

OIE List B

l

Duck viral hepatitis

OIE List B

l

Egg drop syndrome-76

-

l

Equine encephalitis (EEE, WEE, VEE)

OIE List B

l

Fowl pox

OIE List B

l

Haemorrhagic enteritis of turkeys

-

l

Hydropericardium-hepatitis syndrome/Angara disease

-

l

Inclusion body hepatitis

-

l

Infectious bursal disease

OIE List B

l

Infectious laryngotracheitis

OIE List B

l

Marek's disease

OIE List B

l

Newcastle disease

OIE List A

l

West Nile fever

-

coli are responsible for a condition called as coli-granulamatosis (Hjare's disease) characterized by the presence of granuloma in liver cecum, duodenum and mesentery.

Omphalitis or yolk sac infection is another common condition of hatchlings and chicks due to E. coli infection during the first week of hatch and may result in inflamed umbilicus, abnormal coloured unabsorbed yolk in the abdomen and peritonitis. Mortality rate may go up to 100%. Staphylococci, Pseudomonas and other opportunists may also be present as secondary infections.

Diagnosis: The diagnosis of coli infections is based on clinical symptoms, gross lesions and by the isolation of the organisms from heart blood, yolk sac and visceral organs by direct cultivation onto common media and differentiation on McConkey's agar medium wherein the E. coli colonies due to lactose fermentation look pink to brick red in colour.

Prevention and control: Good hygiene, maintenance of high standards of hatchery flock management including good quality feed and water, provision of best possible brooding conditions. Poultry owners should be educated to procure chicks from well managed flocks and hatcheries and to control the predisposing factors and infections. Antibiotics in consultation with veterinarians should be given in drinking water.

Posted Date: 9/18/2012 8:27:08 AM | Location : United States







Related Discussions:- Bacterial diseases - colisepticemia, Assignment Help, Ask Question on Bacterial diseases - colisepticemia, Get Answer, Expert's Help, Bacterial diseases - colisepticemia Discussions

Write discussion on Bacterial diseases - colisepticemia
Your posts are moderated
Related Questions
MECHANISM OF REGENERATION - T.H. morgan recognised 2 primary mechanisms - M o r ph o l axis Epim orphosis 1. Production of enti

How is the nervous system of molluscs organized? Molluscs have well-developed sensory structures. It is established that cephalopods, such as squid and octopus, have eyes with

Define Food Effects in the Survival & Growth of Microorganism? Nature of the food also affects the microbial survival and growth. Each food has its own characteristics which de

i need to create a 20 organism forest ecosystem, help?

There are different types of insulin available and prescribed by the doctor according to the need of the patient. Insulin is grouped according to the speed of action in the body i.

Q. What is Ocean shorelines? Ocean shorelines include rocky coasts and sandy beaches that are particularly rich in diverse life forms. Rocky shorelines support a diversity of o

Q. Illustrate Physiological Evidence ? Physiological and biochemical evidence is providing data of increasing importance to plant systematic. Recently, it has become apparent t

Q What are the three periods into which interphase are divided? Interphase is the preceding phase to the mitotic division. It is divided into three periods, G1, S and G2 the le

What is the logical order in which the concepts of atoms, molecules, cells... up to biosphere are associated? Atoms form molecules that structure cells that form tissues that f

WHAT ARE THE DIFFERENT CULTURE MEDIAS USED FOR ISOLATION OF ACTINOMYCETES?