| dc.contributor.advisor | Dr. Md. Nazrul Islam | |
| dc.contributor.author | AHMED, MD. RAJU | |
| dc.date.accessioned | 2022-04-19T04:00:50Z | |
| dc.date.available | 2022-04-19T04:00:50Z | |
| dc.date.issued | 2014-06 | |
| dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/155 | |
| dc.description | Poultry rearing may play a very important role for income generation and poverty
reduction particularly for the distressed women, unemployed youths in Bangladesh by
means of self-employment. For this purpose, a model of semi scavenging poultry rearing
system known as Model Breeder Poultry Farm (MBPF) has been developed under the
Poultry Management Technology Improvement Projects (PMTIP), Participatory
Livestock Development Project (PLDP) and Small Holder Livestock Development
Project (SLDP-2). In model farming, Sonali breed of chickens has been reared instead of
indigenous local chicken because of their high productivity and increased resistant to
diseases (Rahman et al., 1997).
In Bangladesh chickens are playing a significant role in national economy and reducing
poverty by supplying meat, egg and other by-products. Several constraints such as the
diseases, poor husbandry, low productivity and shortage of feed affect the optimal
performance of this industry in Bangladesh (Haque et al., 1991). Salmonellosis in
poultry causes heavy economic loss through mortality and reduced production (Khan et
al., 1998). With great expansion of poultry rearing and farming, pullorum disease and
fowl typhoid have become wide spread problem in Bangladesh (Rahman et al., 1997).
Age wise prevalence of avian Salmonellosis showed highest infection rate in adult
layers (53.25%) in comparison to brooding (14.55%), growing (16.10%) and pullet
(16.10%) (Rahman et al., 2004). | en_US |
| dc.description.abstract | A bacterio-pathological study of Avian Salmonellosis was conducted in some selected
layer farms at Sadar Upazila of Tangail district, Bangladesh during January-June 2014 to
identify and isolate Salmonella organisms by using 39 liver sample and other visceral
organs (lung, spleen, egg follicles and intestine) from dead birds of 15 layer farms and 75
laid eggs (5 eggs/farm) from respective 15 Salmonella suspected farms. Samples were
subjected to isolation and identification of the causal agent followed by necropsy and
histopathological study of the affected visceral organs. The used methods were culture in
different media, Gram’s staining, different biochemical tests. Out of 39 liver samples 17
(43.59%) were found Salmonella positive. Whereas, Salmonella gallinarum, Salmonella
pullorum and paratyphoid causing Salmonella sp were 70.58%, 17.64% & 11.77%
respectively. During necropsy, the variable lesions were found in Salmonella affected
organs of all 17 birds. About 64.70% livers of Salmonella affected birds were found
enlarged, congested, friable and bronze coloured with white necrotic foci. Around
52.94% egg follicles were congested, hemorrhagic, discoloured with stalk formation and
70.58% intestines showed hemorrhagic to catarrhal enteritis. At histopathology, 82.35%
livers were congested with formation of multifocal nodules characterized by huge
infiltration of leukocyte. Infiltration of heterophils in intestinal mucosa was found in
52.94% cases. Four Salmonella isolates were found from 15 laid egg samples (5 eggs
content comprised as 1 sample) and isolation rate was 26.66% reporting transovarian
transmission in poultry Salmonellosis. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR. | en_US |
| dc.subject | General information of poultry in Bangladesh | en_US |
| dc.subject | History of Salmonella | en_US |
| dc.subject | Isolation and identification of Salmonella organism by 6 culture method | en_US |
| dc.title | BACTERIOPATHOLOGICAL STUDY OF SALMONELLA INFECTION IN LAYER BIRDS OF SELECTED FARMS IN TANGAIL DISTRICT | en_US |
| dc.type | Thesis | en_US |
