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Open Access
Copyright: The authors. This article is an open access
article licensed under the terms of the Creative Commons Attribution License
(http://creativecommons.org/licenses/by/2.0) which permits unrestricted use,
distribution and reproduction in any medium, provided the work is properly
cited.
Research
2. A
preliminary clinical laboratory investigation of endemic spiking
mortality syndrome of broiler chickens in Nepal -
Kedar Karki, Poornima Manandhar, Tika Ram Neupane, Salina
Manandhar and Praggya Koirala
Vet World. 2008; 1(11): 329-332
Abstract
During the period
of March, April and May 2008 first time a sudden and unexpected
jump in mortality in Broiler of 8 to 16 days of age was reported
from broiler farms from Chitwan and Kathmandu valley in Nepal.
Affected birds become recumbent, depressed and often go into a
star gazing spasm. Those signs included, huddling of the birds,
trembling, blindness, loud chirping, litter eating, ataxia,
comatose, birds dead with breast down and feet and legs straight
out behind birds. Death within two to six hours after the onset of
the symptoms Postmortem Lesions found with this syndrome include
hemorrhages in the liver with necrosis of liver cells, regressed
thymus, regression of the bursa of Fabricius, dehydration with the
accumulation of kidney urates, fluid in the crop, fluid in the
lower gut and watery contents of the ceca. Yellow elastic shanks
swollen joints. Molted appearance of brain. . The mortality lasted
for three to five days, after which, the mortality patterns return
to a relatively normal level. When treated with liquid toxin
binders like toxol, toxolivum, livertonic like hepatocare,
naturaliv, immunomodulaters like immunocare, promin, pentasol and
antibiotics there was check in mortality but the body weight
recovery was not satisfactory only half as in comparison of in
other illness. During this period laboratory culture of total 298
tissue specimen from dead bird was conducted which revealed growth
of fungus spp likeAspergillus and Penicillium in
182 specimen while mixed E.coli and Staphylococcus were
recovered in 68 specimen 24 specimen revealed the growth of
Salmonella spp of bacteria and 24 samples were turn out to be
negative while the attempt to isolate the Avian encephalomyelitis
virus as it might be the cause suspected also turnout negative. On
the basis of all laboratory findings and response to the treatment
attempted finding of this preliminary investigation work is
suggestive that the above syndrome indicates that mycosis emerging
as one of new challenge for the early age broiler health
management need to be thoroughly further investigated.
Key Words: Spiking
Mortality Syndrome, Early Broiler chicken, Fungus, Aspergillus, Penicillium,
Liquid Toxin binder, avian encephalomyelitis.
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