Differences in resistance to<i>Salmonella enterica</i>serovar Gallinarum infection among indigenous local chicken ecotypes in Tanzania

Msoffe, Peter L. M.; Minga, U.M.; Mtambo, M.M.A.; Gwakisa, Paul; Olsen, John Elmerdahl

doi:10.1080/03079450600817024

Cited by 18 publications

(18 citation statements)

References 19 publications

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“…6). The microscopic lesions recorded in the present investigation were almost similar to the lesions described by other authors (Chishti et al, 1985;Calnek et al, 1991;Khan et al, 1998;Kinde et al, 2000;Hafeji et al, 2001;Prasanna and Paliwal, 2003;Holt et al, 2006;Msoffe et al, 2006). "+"present, "-"absent and "n"= No.…”

Section: Histopathologysupporting

confidence: 91%

Salmonellosis in layer chickens: pathological features and isolation of bacteria from ovaries and inner content of laid eggs

Saha

Sufian

Hossain

2012

J Bangladesh Agric Univ

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We isolated and identified Salmonella organisms from ovaries of dead layer birds and from inner content of laid eggs of different poultry farms. The thirty eight ovarian swabs for bacteriology, visceral organs (liver, lung, spleen, egg follicles and intestine) of 38 dead birds for pathological study from 15 layer farms and 45 laid eggs (5 eggs/farm) from reported 9 Salmonella infected farms constituted samples of the study. Samples were subjected to isolation and identification of the causal agent followed by gross and histopathological study of the affected visceral organs. Seventeen of 38 ovarian swabs (44.7%) were Salmonella positive. The percentage of Salmonella Gallinarum, Salmonella Pullorum and paratyphoid causing Salmonella were 70.6%, 17.6% & 11.8%, respectively. About 53% livers of Salmonella affected birds were enlarged, congested, friable and bronze coloured with white necrotic foci. About 59% egg follicles were congested, hemorrhagic, discoloured with stalk formation and 70.6% intestines showed hemorrhagic to catarrhal enteritis. At histopathology, 76.5% livers were congested with formation of multifocal nodules and 82.4% egg follicles were congested with huge leukocytic infiltration. Infiltration of heterophils in intestinal mucosa was found in 47.1% cases. Four Salmonella isolates were found from 9 laid egg samples (5 eggs content comprised as 1 sample) and isolation rate was 44.4% reporting transovarian transmission in poultry Salmonellosis.

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Section: Histopathologysupporting

confidence: 91%

Salmonellosis in layer chickens: pathological features and isolation of bacteria from ovaries and inner content of laid eggs

Saha

Sufian

Hossain

2012

J Bangladesh Agric Univ

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“…With histochemistry, positive immunoreactivity against the bacterium was observed in the lesions, suggesting that the histopathological changes were associated with the bacterium. Heart muscle necrosis, as described by some investigators, was not detected in the current study (Kaushik et al, 1986;Msoffe et al, 2006). Kidney lesions caused by S. Gallinarum in various poultry species have been described (Waihenya et al, 2002;Freitas et al, 2007).…”

Section: Discussionsupporting

confidence: 52%

“…Pericarditis and myocarditis occur in poultry salmonellosis (Song et al, 2002;Msoffe et al, 2006;Freitas et al, 2007). The heart lesions in the present study were fibrinous pericarditis in the young birds and a mononuclear pericarditis and myocarditis in adults.…”

Section: Discussionsupporting

confidence: 50%

Pathomorphological, immunohistochemical and bacteriological findings in budgerigars (Melopsittacus undulatus) naturally infected withS.Gallinarum

et al. 2012

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The present study describes the pathological and bacteriological findings and diagnosis by immunoperoxidase and immunofluorescence methods in budgerigars (Melopsittacus undulatus) naturally infected with Salmonella gallinarum obtained from three commercial budgerigar rearing farms. The course of the disease in young budgerigars was peracute or acute, whereas in adult budgerigars the disease was acute or chronic. Clinically, yellowÁwhite diarrhoea was observed in the young budgerigars with the acute form. In the adult budgerigars with the acute and chronic forms, a decrease in feed and water consumption with loss in body condition together with greenish-yellow diarrhoea was generally noted. Peritonitis and pericarditis were the most common findings in young budgerigars at necropsy, while in adult budgerigars scattered greyÁwhite necrotic foci were found in the livers. Histopathologically, the lesions in young budgerigars were characterized with fibrinonecrotic peritonitis and/or pericarditis and necrotic hepatitis. In adult budgerigars with acute infection, hepatic necrosis with focal heterophil infiltration was present; whilst lesions in the chronic cases were granulomatous in nature with the infiltration of macrophages, lymphocytes and histiocytes. For the detection of S. Gallinarum in formalin-fixed, paraffin-embedded tissues, the avidinÁbiotin peroxidase complex and immunofluorescence methods were used. Both methods showed bacteria to be localized in the liver, kidney, peritoneum, heart, spleen and intestines of both young and adult budgerigars. The results of the present study indicate that the avidinÁbiotin peroxidase complex method was more sensitive than the immunofluorescence method in the detection of the bacteria.

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“…Previous studies revealed genetic and phenotypic variability in Tanzanian indigenous chickens in terms of plumage colour and type, body shape and size, as well as productivity (Msoffe et al, 2001;Minga et al, 2004;Msoffe et al, 2004;Msoffe et al, 2006). In these reports, Tanzanian indigenous chickens were characterized based on their phenotypic traits and geographical origin in Tanzania (Msoffe et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Assessing the genetic diversity of five Tanzanian chicken ecotypes using molecular tools

Lyimo¹,

Weigend²,

Janssen-Tapken³

et al. 2014

SA J. An. Sci.

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The study aimed to evaluate the genetic diversity of Tanzanian chicken populations through phylogenetic relationship, and to trace the history of Tanzanian indigenous chickens. Five ecotypes of Tanzanian local chickens (Ching'wekwe, Kuchi, Morogoro-medium, Pemba and Unguja) from eight regions were studied. Diversity was assessed based on morphological measurements and 29 microsatellite markers recommended by ISAG/FAO advisory group on animal genetic diversity. A principal component analysis (PCA) of morphological measures distinguished individuals most by body sizes and body weight. Morogoro Medium, Pemba and Unguja were grouped together, while Ching'wekwe stood out because of their disproportionate short shanks and ulna bones. Kuchi formed an independent group owing to their comparably long body sizes. Microsatellite analysis revealed three clusters of Tanzanian chicken populations. These clusters encompassed i) Morogoro-medium and Ching'wekwe from Eastern and Central Zones ii) Unguja and Pemba from Zanzibar Islands and iii) Kuchi from Lake Zone regions, which formed an independent cluster. Sequence polymorphism of D-loop region was analysed to disclose the likely maternal origin of Tanzanian chickens. According to reference mtDNA haplotypes, the Tanzanian chickens that were sampled encompass two haplogroups of different genealogical origin. From haplotype network analysis, Tanzanian chickens probably originated on the Indian subcontinent and in Southeast Asia. The majority of Kuchi chickens clustered in a single haplogroup, which was previously found in Shamo game birds sampled from Shikoku Island of Japan in the Kōchi Prefecture. Analysis of phenotypic and molecular data, as well as the linguistic similarity of the breed names, suggests a recent introduction of the Kuchi breed to Tanzania.

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Differences in resistance toSalmonella entericaserovar Gallinarum infection among indigenous local chicken ecotypes in Tanzania

Cited by 18 publications

References 19 publications

Salmonellosis in layer chickens: pathological features and isolation of bacteria from ovaries and inner content of laid eggs

Salmonellosis in layer chickens: pathological features and isolation of bacteria from ovaries and inner content of laid eggs

Pathomorphological, immunohistochemical and bacteriological findings in budgerigars (Melopsittacus undulatus) naturally infected withS.Gallinarum

Assessing the genetic diversity of five Tanzanian chicken ecotypes using molecular tools

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