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Research
2. Outbreak
of sudden death syndrome in broiler chicken in Kathmandu valley,
Nepal -
Kedar Karki and Esmeraldo M. Cabana
Vet World. 2008; 1(9): 265-267
Abstract
The
incidence of sudden death of broiler birds above 40 days suddenly
increased in the month of August 2008 in Kathmandu valley. Birds
that were presented for post-mortem examination in Central
Veterinary Laboratory Tripureswor Kathmandu were usually found
dead on their backs with wings out-stretched. Incidence rate was
recorded between 1.5 to 2.5% of the flock. The mean mortality due
to sudden death syndrome was 1.3 - 9.6% and mortality usually
occurs after 6 week of age. There are no outstanding gross lesions
on post mortem examinations, except for muscle oedema, pulmonary,
renal and liver congestion, and congestive splenomegaly. Penicillium
spp., Aspergillus
spp., Candida
spp, E.coli,
Streptococcus spp. and Staphylococcus
spp. were the usual organisms isolated from culture samples of
liver, lung, spleen and proventriculus. Reduction of mortality was
achieved by feed restriction, supplementation of glucose
containing electrolyte, liquid toxin binder, Immunomodulaters,
acidifier and antibiotic therapy. The condition seems to be
related to fast growth rate. A practical approach seems to use
diets with 5-7% reduction in nutrient density. The provision of
more space and supportive treatment with anti-stress medicine may
also be beneficial. This incidence of sudden death syndrome in
birds in Kathmandu Valley was reported for the first time and
needs to be investigated further.
Key word:
Sudden death syndrome, broiler birds, Kathmandu Valley, Nepal.
