Molecular Characterization of Some Virulence Genes in Klebsiella Pneumoniae Isolated From Broilers

doi:10.21608/avmj.2019.168758

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“…Klebsiella pneumoniae was isolated and identified in seven (14%) flocks which is close to the isolation rate (14.4%) that obtained from broilers with weakness, gasping and poor growth (Elgaos et al 2019) and higher than that (6.6%) obtained from broilers with respiratory disorders, diarrhea and growth retardation (Marwa et al 2018). K. pneumoniae virulence factor magA (that has an important role in septicemia, pneumonia, liver and lung abscesses, and increasing resistance to phagocytosis) was found in 29% from the identified K. pneumonae (fig.…”

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confidence: 63%

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Microbiological and pathological studies of concurrent infections associated with retarded growth in broilers in Behira governorate

2023

Egyptian Journal of Animal Health

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S everal broiler flocks in Behira governorate, suffered from growth retardation that caused a lot of economic losses. Thus, this study was done to identify some of the probable causes and their pathological picture. Samples were collected from 50 broiler chicken flocks, suffering from retarded growth during 2018-2021. Chicken anemia virus (CAV) was detected by PCR in five flocks (10%), meanwhile avian reovirus (ARV) was detected by RT-PCR in 29 flocks (58%). Antibodies of ARV and CAV were detected by ELISA in 86% and 12% from the examined flocks, respectively. Five serotypes of E. coli (O86a, O112, O128, O114, and O55) were isolated from 19 flocks (38%). C. perfringens was isolated from 26 flocks (52%). The observed pathological features were associated with hyper activity of intestinal mucus secreting cells, elongation of cryptal intestinal villi which were partly filled with inflammatory cells and depletion of Payer's patches of ileum. Pancreas showed degeneration and vacuolation of acinar cells. Proventriculus showed dilation of glandular acini, necrosis and sloughing of the glandular epithelium. Bursa showed lymphocytic depletion and atrophy of the bursal follicle, these changes were associated with lymphocytic depletion within the spleen and thymus. Additionally, apoptotic bodies were detected in liver and thymus. This study can indicate the presence of several causes to growth retardation (in vivo) that can do a synergistic effect to aggravate the problem. INTRODUCTION:Growth retardation is one of the challenges that threatening poultry industry especially broilers and causing severe economic damages that resulting from poor feed conversion ratio, decreased body weight, excessive culling and carcass condemnations.Avian reovirus (ARV) has worldwide dis-

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Section: Discussionsupporting

confidence: 63%

“…Klebsiella pneumonia (K. pneumonia) was isolated from broilers suffering from poor growth (Elgaos et al 2019). K. pneumoniae virulence factor magA (mucoviscosity associated gene A) contributes to the, septicemia, pneumonia, liver and lung abscesses and increases resistance to phagocytosis (Chan et al 2005, Struve et al, 2005and Chung et al 2007.…”

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confidence: 99%

Microbiological and pathological studies of concurrent infections associated with retarded growth in broilers in Behira governorate

2023

Egyptian Journal of Animal Health

View full text Add to dashboard Cite

show abstract

Molecular Characterization of Some Virulence Genes in Klebsiella Pneumoniae Isolated From Broilers

Cited by 1 publication

References 11 publications

Microbiological and pathological studies of concurrent infections associated with retarded growth in broilers in Behira governorate

Microbiological and pathological studies of concurrent infections associated with retarded growth in broilers in Behira governorate

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