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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 (Published
online : 08-08-2013)
6. Pathomicrobial studies on Salmonella Gallinarum
infection in broiler chickens - Divya Kumari, S.K. Mishra and Deepika
Lather
Veterinary World, 6(10): 725-729
doi:
10.14202/vetworld.2013.725-729
Abstract
Aim: To conduct detailed
pathomicrobial studies on Salmonella Gallinarum infection
in broiler chickens.
Materials and Methods: Bacteriological and pathological
studies were conducted on 134 dead poultry birds collected from 23
different farms suspected to be infected with S. Gallinarum.
Results: Mortality pattern revealed that maximum mortality
occurred in 1-2 week aged birds. Out of 23 Salmonella isolates, 19
samples were identified as S. Gallinarum (9, 12) and 4
samples as Salmonella Enteritidis (9, 12: gm). Isolates
were found to be most sensitive to Polymyxin B (100%). The present
study also showed re-emergence of chloramphenicol sensitivity
(83.33%). Pathological lesions observed were bronze discolouration
of liver, splenomegaly and necrotic foci on liver, spleen and
heart. Microscopically, liver and spleen revealed aggregation of
heterophils, lymphocytes and macrophages, non-suppurative
myocarditis, fibrinous pericarditis, interstitial nephritis,
necrotic enteritis and serofibrinous pneumonia.
Conclusion: It was concluded that S. Gallinarum 9,
12 was the main serotype causing Salmonellosis in poultry birds.
Polymyxin B was the most sensitive drug (100%) for Salmonella
infection along with re-emergence of chloramphenicol sensitivity
for Salmonella (83.33%) infection.
Keywords: broiler, drug sensitivity, pathology,
Salmonella Gallinarum
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