Death Becomes Her

A review on the clinical laboratory outbreak of sudden death syndrome of broiler Nepal Kathmandu Valley
A review on the clinical laboratory outbreak of sudden death syndrome of broiler Nepal Kathmandu Valley

Kedar Karki, Pragya Koirala

Central Veterinary Laboratory Kathmandu Nepal Tripureshwor

SUMMARY:

The sudden death of broiler birds over 40 days was abruptly increased during the month of August 2008 in the Kathmandu valley. The birds were submitted for postmortem examination in the Central Veterinary Laboratory Kathmandu Tripureswor were usually found dead on their backs with wings-tight. Incidence of this condition has been recorded between 1.5 to 2.5% of the herd. The average mortality due to sudden death syndrome was 1.3 - 9.6% and mortality was peak after 6 weeks of age. postmortem autopsies of birds affected by Sudden Death Syndrome were well fleshed with edema and general pulmonary congestion. Feed was present along the entire gastrointestinal tract and the gall bladder was empty. The liver and kidneys were slightly congested and have patchy subcapsular hemorrhage. The heart was containing blood clots in the atria and ventricles are mostly empty. Microbial culture and Mycobial tissue samples of liver, lung, spleen, proventriculus revealed in most samples of the growth of Penicillium and Aspergillus species of fungi and E. coli bacteria and Staphylococcus spp. On the restricted diet, supplementation of glucose containing electrolyte, liquid toxin binder, Immunomodulaters, acid and antibiotics reduces mortality. The condition appears to be related to fast growth rate. In extreme cases, food restriction should be practiced with virtually eliminate the sudden death syndrome. A practical approach seems to use a power reduction of 5-7% of the nutrient density. Give more space and symptomatic treatment with anti-stress can be beneficial.

 

Keyword:

sudden death syndrome, broiler birds, microbes and culture Mycobial, Penicillium and Aspergillus species of fungi, food restriction, glucose containing electrolyte, liquid toxin binder, Immunomodulaters, acidifying

Background of the outbreak of sudden death syndrome in Kathmandu Valley.

During the first week of August 2008, there is a sudden increase in mortality of broiler chickens over 6 weeks of age. Just before the death of the birds appear normal and it is common to observe that these birds will eat, drink or walk normally. showing clinical signs of birds such as extending their neck, squawk and start flapping its wings and the extension leg before falling on his back and used the birds to die suddenly. postmortem autopsies of birds affected by Sudden Death Syndrome were well-fleshed with edema and general pulmonary congestion. Feed was present along the entire gastrointestinal tract and the gall bladder was empty. The liver and kidneys were slightly congested and have patchy subcapsular hemorrhage. The heart was containing blood clots in the atria and ventricles are mostly empty.

 

Material and Methods:

1: Clinical epidemiological observation in affected flocks.

2: The post-mortem examination and microbial evaluation Mycobial tissue samples.

3: Evaluation of treatment options and preventive measures

Epidemiology of the affected herd syndrome of sudden death during the month of August 2008:

Table 1

Duration

Number of farms

Population at risk

Morbidity

.