scholarly journals Bacterio-pathological Studies on Salmonellosis, Colibacillosis and Pasteurellosis in Natural and Experimental Infections in Chickens

1970 ◽  
Vol 2 (1) ◽  
pp. 1-8 ◽  
Author(s):  
MA Rahman ◽  
MA Samad ◽  
MB Rahman ◽  
SML Kabir
Keyword(s):  
Broiler Chickens ◽  
Pasteurella Multocida ◽  
Age Groups ◽  
Clinical Signs ◽  
Necrotic Enteritis ◽  
Bacterial Diseases ◽  
Fowl Cholera ◽  
Causative Agents ◽  
Salmonella Pullorum ◽  
One Year

Bacterio-pathological investigation on 1751 dead chickens during one year period from January to December 2002 at the BRAC Poultry Disease Diagnostic Centre, Gazipur showed that 39.81% (n=697) cases with seven types of different bacteriological diseases of which salmonellosis (n=385), colibacillosis (n=147) and fowl cholera (n=114) were found significantly higher rate of prevalence then staphylococcosis (n=6),  gangrenous dermatitis (n=17), necrotic enteritis (n=24) and infectious coryza (n=4). Accordingly, avian salmonellosis, colibacillosis and pasteurellosis were selected for detailed investigation. 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%) chickens. The avian colibacillosis was found widely prevalent in all age groups of chickens (9.52 to 36.73%) with specially high prevalence rate in adult layer birds (36.73%). Fowl cholera was recorded in chickens more than two weeks of age with significantly (p < 0.01) highest occurrence in adult chickens. Seasonal influence showed significantly (p < 0.01) highest proportionate prevalence of salmonellosis during summer (48.05%) in comparison to rainy (28.31%) and winter (23.66%) seasons. Colibacillosis was recorded more or less uniformly in all the three seasons of the year with significantly (p < 0.01) higher rate during summer (40.82%) season. Similarly, the prevalence of fowl cholera was also found significantly (p < 0.01) highest during summer (49.12%) in comparison to rainy (26.32%) and winter (24.56%) seasons. The isolated causative agents of avian salmonellosis (Salmonella pullorum), avian colibacillosis (Escherichia coli) and avian pasteurellosis (Pasteurella multocida) were characterized by bacteriological methods which were also subjected to pathogenicity study in 52-day old broiler chickens. Pathogenicity study showed that the incubation period of these three bacterial diseases were recorded as 96 hours and clinical signs appeared on 4th day of inoculation and observed that S. pullorum, E. coli and P.  multocida resulted 100% morbidity in chickens. Key words: Characterization; pathogenicity; salmonellosis; colibacillosis; pasteurellosis; chickens doi: 10.3329/bjvm.v2i1.1926 Bangl. J. Vet. Med. (2004). 2(1) : 01-08

scholarly journals CLINICAL AND LABORATORY DIAGNOSES OF COMMON BACTERIAL DISEASES OF BROILER AND LAYER CHICKENS

2012 ◽  
Vol 8 (2) ◽  
pp. 107-115 ◽  
Author(s):  
AKM Rakibul Hasan ◽  
MH Ali ◽  
MP Siddique ◽  
MM Rahman ◽  
MA Islam
Keyword(s):  
Clinical Diagnosis ◽  
Broiler Chickens ◽  
Clinical Signs ◽  
Clinical History ◽  
Laboratory Diagnosis ◽  
Biochemical Tests ◽  
Bacterial Diseases ◽  
Fowl Cholera ◽  
Poultry Farms ◽  
Layer Chickens

The study was undertaken with a view to compare clinical and laboratory diagnoses of various bacterial diseases of poultry during the period from March 2009 to February 2010 in the laboratory of the Dept. of Microbiology and Hygiene, Bangladesh Agricultural University (BAU), Mymensingh. A total of 135 sick and dead chickens (47 broilers and 88 layers) were collected from 12 different poultry farms (4 broilers and 8 layers) of Mymensingh and Gazipur districts which were subjected for clinical followed by laboratory diagnosis. Clinical diagnosis was made on the basis of clinical history, clinical signs and postmortem findings of the affected birds whereas; confirmatory diagnosis was made by using cultural examination, Gram’s staining and different biochemical tests. In this study, out of 47 broilers, 16 (34%) chickens were clinically diagnosed as colibacillosis, 11 (23.40%) as salmonellosis and 2 (4.25%) as fowl cholera. In the same way, out of 88 layer chickens, 28 (31.82%) were diagnosed as colibacillosis, 16 (18.18%) as salmonellosis and 11 (12.50%) as fowl cholera. In laboratory, out of 47 suspected broiler chickens, 12 (25.53%) chickens were diagnosed as colibacillosis, 7 (14.89%) as salmonellosis and 0 (0%) as fowl cholera. Correspondingly of the 88 layer chickens 22 (25%) were diagnosed as colibacillosis, 11 (13.64%) as salmonellosis and 8 (9.09%) as fowl cholera. So the findings concluded that clinical diagnosis is not always accurate like laboratory diagnosis because in most cases clinical history, clinical signs and post-mortem lesions of different bacterial diseases including mixed infections are almost similar to other related diseases and it is recommended to confirm laboratory diagnosis before treatment of the diseases.DOI = http://dx.doi.org/10.3329/bjvm.v8i2.11188 Bangl. J. Vet. Med. (2010). 8 (2) : 107-115 

scholarly journals Novel multi-strain probiotics reduces Pasteurella multocida induced fowl cholera mortality in broilers

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rine Christopher Reuben ◽  
Shovon Lal Sarkar ◽  
Habiba Ibnat ◽  
Md. Ali Ahasan Setu ◽  
Pravas Chandra Roy ◽  
...  
Keyword(s):  
Growth Performance ◽  
Feed Efficiency ◽  
Biochemical Parameters ◽  
Pasteurella Multocida ◽  
White Blood Cells ◽  
Clinical Signs ◽  
Basal Diet ◽  
Prostaglandin E ◽  
Fowl Cholera ◽  
Anti Inflammatory

AbstractPasteurella multocida causes fowl cholera, a highly contagious poultry disease of global concern, causing significant ecological and economic challenges to the poultry industry each year. This study evaluated the effects of novel multi-strain probiotics consisting of Lactobacillus plantarum, L. fermentum, Pediococcus acidilactici, Enterococcus faecium and Saccharomyces cerevisiae on growth performance, intestinal microbiota, haemato-biochemical parameters and anti-inflammatory properties on broilers experimentally challenged with P. multocida. A total of 120 birds were fed with a basal diet supplemented with probiotics (108 CFU/kg) and then orally challenged with 108 CFU/mL of P. multocida. Probiotics supplementation significantly (P < 0.05) improved growth performance and feed efficiency as well as reducing (P < 0.05) the population of intestinal P. multocida, enterobacteria, and mortality. Haemato-biochemical parameters including total cholesterol, white blood cells (WBC), proteins, glucose, packed cell volume (PCV) and lymphocytes improved (P < 0.05) among probiotic fed birds when compared with the controls. Transcriptional profiles of anti-inflammatory genes including hypoxia inducible factor 1 alpha (HIF1A), tumor necrosis factor- (TNF) stimulated gene-6 (TSG-6) and prostaglandin E receptor 2 (PTGER2) in the intestinal mucosa were upregulated (P < 0.05) in probiotics fed birds. The dietary inclusion of the novel multi-strain probiotics improves growth performance, feed efficiency and intestinal health while attenuating inflammatory reaction, clinical signs and mortality associated with P. multocida infection in broilers.

​​Differential Disease Resistance of Indian Native Chicken Breeds to Experimental P. multocida Infection

2021 ◽  
Author(s):  
T.R. Kannaki ◽  
E. Priyanka ◽  
M. Abhilash ◽  
Santosh Haunshi
Keyword(s):  
Experimental Infection ◽  
Pasteurella Multocida ◽  
Clinical Signs ◽  
Mortality Rates ◽  
Susceptibility Pattern ◽  
Intranasal Route ◽  
Bacterial Diseases ◽  
Death Time ◽  
Native Chicken ◽  
Chicken Breeds

Background: Native chicken breeds are considered more disease tolerant than exotic chicken breeds especially for the bacterial diseases. Aseel, Ghagus and Vanaraja chicken breeds/ variety were evaluated for the disease tolerance/susceptibility pattern after experimental infection with P. multocida A:1 isolate. Methods: A total of 72 birds of three breeds viz., Aseel, Ghagus and Vanaraja (n=24 each) were divided into three groups. The birds were inoculated with 2.5x106 CFU/ml of virulent Pasteurella multocida A:1 isolate through intraperitoneal (I/P) and intranasal (I/N) routes at 12 weeks of age. Clinical signs, morbidity, mortality rates and lesions were observed in the infected birds. Result: The mortality rates were 83.3% in Assel breed against 100% in both Ghagus and Vanaraja breed in intraperitoneally infected groups. Upon intranasal infection, the mortality was 83.3% in Assel and Vanaraja breed against 100% in Ghagus breed. Aseel birds showed significantly better survivability and longer death time than Ghagus breed upon experimental infection with Pasteureall multocida A:1 isolate. Vanaraja breed showed tolerance comparable to Aseel in experimental infection via intranasal route.

scholarly journals Prevalence of poultry diseases in Gazipur district of Bangladesh

2016 ◽  
Vol 2 (1) ◽  
pp. 107-112 ◽  
Author(s):  
Md Kamrul Hassan ◽  
Md Humayun Kabir ◽  
Md Abdullah Al Hasan ◽  
Shobnom Sultana ◽  
Md Shohidul Islam Khokon ◽  
...  
Keyword(s):  
Newcastle Disease ◽  
Clinical Signs ◽  
Infectious Bursal Disease ◽  
Viral Diseases ◽  
Necrotic Enteritis ◽  
Age Group ◽  
Bacterial Diseases ◽  
Infectious Bronchitis ◽  
Prevalent Disease ◽  
Bursal Disease

This study was designed with a view to investigate the prevalence of poultry diseases in Gazipur district of Bangladesh. A total of 679 poultry birds (313 layers, 338 broilers and 28 cockrels) either dead or live were brought for diagnosis of diseases at Gazipur Sadar Upazilla Veterinary Hospital. The diseases were diagnosed on the basis of history, clinical signs and post-mortem findings. The diseases encountered in layers were bacterial diseases 52.29% (salmonellosis 38.56%, colibacillosis 6.7%, fowl cholera 4.79% and necrotic enteritis 1.60%), viral diseases 23.95% (avian influenza 2.56%, Newcastle disease 16.61%, infectious bronchitis 3.19% and avian leucosis 0.64%), mycoplasmal disease (mycoplasmosis 14.70%) and protozoal disease (coccidiosis 5.75%). Salmonellosis was most prevalent disease in age group of >20 weeks, while Newcastle disease most common in 8 to 20 weeks of age group. In case of broiler, bacterial diseases 28.99% (salmonellosis 21.30% and colibacillosis 7.69%), viral diseases 53.24% (infectious bursal disease 28.99%, Newcastle disease 8.87% and infectious bronchitis 15.38%), mycoplasmal disease (mycoplasmosis 7.1%) and protozoal disease (coccidiosis 6.5%). In cockrels, the most prevalent disease was colibacillosis 35.71% followed by salmonellosis 28.57%, Newcastle disease 14.28% and mycoplasmosis14.28%. So among the diseases, salmonellosis is most prevalent disease followed by infectious bursal disease and mycoplasmosis in different kinds of poultry of Gazipur district of Bangladesh.Asian J. Med. Biol. Res. March 2016, 2(1): 107-112

scholarly journals Diagnostics of main bacterial agents of porcine respiratory diseases complex (PRDC) using PCR detection of Mycoplasma hyopneumoniae

2012 ◽  
Vol 49 (No. 2) ◽  
pp. 35-41 ◽  
Author(s):  
I. Holko ◽  
J. Urbanova ◽  
THolkova ◽  
V. Kmet
Keyword(s):  
Respiratory Diseases ◽  
Pasteurella Multocida ◽  
Respiratory Infections ◽  
Clinical Signs ◽  
Antibiotic Sensitivity ◽  
Mycoplasma Hyopneumoniae ◽  
Sensitivity Testing ◽  
Pcr Method ◽  
One Year ◽  
Porcine Respiratory

The main goal of our work is the presentation and analysis of incidence of porcine respiratory disease complex (PRDC) regarding bacterial agents in the territory of northern districts of Slovakia. Mycoplasma hyopneumoniae and other secondary bacterial causative pathogens of PRDC comprised 75.2% of all cases (98) with clinical signs of respiratory infections that we examined in the course of one year. We present also one of possibilities to the solution of problematic detection of M. hyopneumoniae which is, like the whole rank of mycoplasmas, very difficult to cultivate. This problem was solved by using the PCR method with the direct isolation of M. hyopneumoniae from lungs tissue. In antibiotic sensitivity testing of Pasteurella multocida and Actinobacillus pleuropneumoniae resulted enrofloxacin as the most effective antibiotics in the therapy of PRDC regarding bacterial agents.in above mentioned territory.

scholarly journals A study on bacterial dissemination and pathology of experimental intraperitoneal infection of broiler chickens with Pasteurella multocida

2003 ◽  
Vol 27 (1) ◽  
pp. 180-190
Author(s):  
Salem A. Al-Shabibi ◽  
Khalil H. Al - Joboury ◽  
Harith M. Al-Hyali
Keyword(s):  
Broiler Chickens ◽  
Pasteurella Multocida ◽  
Giant Cells ◽  
Intestinal Wall ◽  
Acute Stage ◽  
Necrotic Enteritis ◽  
Fibrin Deposition ◽  
Subacute Stage ◽  
Intraperitoneal Infection ◽  
The Brain

Following intraperitoneal inoculcation of 11week - old broiler chicken with 1ml (109cfu/ml) Pasteurella multocida the organisms were disseminated in different organs at specific intervals. The microorganisms presisted in the brain (69.23%) for 19 days postinoculation, in the kidneys and ovary or testis (76.92%) for 23 days, in liver (92.31%), in spleen and lungs (100%) and in heart (84.62%) and for 27 days postinoculation in all of these organs. During the first week postinoculation (acute stage). There were extensive congestion, edema, thrombosis and petichial and eccymotic haemorrhages in the various organs. Infiltration of heterophils, fibrin deposition and acute necrotic areas were also found in different organs such as the brain, meninges, intestine, liver, spleen, kidneys, lungs, heart wall and ovary or testis. During the second week postinoculation (subacute stage), the Infiltration of heterophils, fibrin deposition and necrotic areas in different organs were localized and replaced gradually from the outside by lymphocytes and macrophages to form early pyogranulomas. Also, hyperplasia of peyer's patches and solitary lymphoid nodules in the intestinal wall were predominant. During the 3rd and 4 weeks postinoculation (chronic stage), the early pyogranulomas seen in subacute stage become more localized and chronic, consisting of central areas of necrosis surrounded by lymphocytes, macrophages, and giant cells and on the outside there was fibroblasts proliferation. These chronic granulomas were mostly predominant in liver, lungs, kidney and ovary or testis. Also, lesions of chronic necrotic enteritis were seen in certain cases. The above findings revealed that acute septicemic lesions, followed by pyogranulomas and finally chronic granulomas were persistent lesions associated with Pasteurella multocida infection.

scholarly journals THE EFFICACY OF VACCINATION OF LAYER CHICKENS WITH INACTIVATED FOWL CHOLERA BACTERIN PREPARED FROM LOCAL EGYPTIAN STRAINS OF Pasteurella multocida

2020 ◽  
Vol 57 (4) ◽  
Author(s):  
Wafaa Abd El-Ghany ◽  
Hanan Ali Ahmed ◽  
Ali Zaher Qandoos ◽  
Mohamed Abd El-Rahman Bosila Bosila
Keyword(s):  
Pasteurella Multocida ◽  
Histopathological Examination ◽  
Clinical Signs ◽  
Post Vaccination ◽  
Fowl Cholera ◽  
Humoral Immune ◽  
Group A ◽  
The Mean ◽  
Layer Chickens ◽  
Group B

This study was carried out to evaluate the efficacy of vaccination of layer chickens with inactivated FC bacterin prepared from local Egyptian strains of Pasteurella multocida (P. multocida). A total of 200 layer chickens were divided into 5 equal groups, 40 for each. At the age of 6 weeks, chickens in groups (A) and (B) were vaccinated with P. multocida serotypes A:1 and A:3, respectively, booster doses were given after 3 weeks (9 weeks old) and challenge was done with virulent serotypes A:1 and A:3 at 2 weeks later (11 weeks old). Chickens in groups (C) and (D) were not vaccinated, only challenged with P. multocida serotype A:1 and A:3, respectively. Birds in group (E) were kept as non-vaccinated and non-challenged. Blood samples were collected weekly from all groups for humoral immune response. All the birds were kept under observation for signs, mortalities, lesions and re-isolation of challenging organism and for histopathological examination. Results of the mean Enzyme Linked Immuno-Sorbent Assay (ELISA) revealed that the highest level was at 5 weeks post vaccination as the titers reached to 3970 in group (A) and 3905 in group (B). The clinical signs, mortality rate and lesions were mild in the vaccinated birds while severe lesions were in non-vaccinated and challenged birds. The protection rates were 85 % and 80 % in groups (A) and (B); respectively, while 10 % and 20 % in groups (C) and (D); respectively. The re-isolation rates of P. multocida after challenge were 95 % and 90 % in non-vaccinated-challenged birds with P. multocida serotypes A:1 and A:3; respectively, while they were 25 % and 15 % in vaccinated-challenged groups with P. multocida serotypes A:1 and A:3; respectively. Histopathological examination of P. multocida vaccinated-challenged birds revealed mild to no microscopic lesions when compared with non-vaccinated challenged chickens. In conclusion, the prepared FC inactivated bacterin from the local Egyptian predominant P. multocida serovars proved efficacy and protection of layer chickens. Key words: Pasteurella multocida; chickens; immunization; protection; Egypt UČINKOVITOST CEPLJENJA KOKOŠI NESNIC Z INAKTIVIRANO BAKTERIJO KOLERE PERJADI, PRIPRAVLJENE IZ LOKALNIH EGIPTOVSKIH SEVOV BAKTERIJE Pasteurella multocida Povzetek: Raziskava je bila izvedena z namenom ocenitve učinkovitosti cepljenja kokoši nesnic z inaktivirano bakterijo FC, pripravljeno iz lokalnih egiptovskih sevov bakterije Pasteurella multocida (P. multocida). Skupno 200 kokoši nesnic je bilo razdeljenih v 5 enakih skupin. V vsaki skupini je bilo 40 kokoši. Pri 6 tednih smo kokoši v skupinah A in B cepili s serotipoma P. multocida A:1 in A:3, po 3 tednih, ko so bile živali stare 9 tednov, so dobile poživitvene doze cepiva. Po dveh tednih (v starosti 11 tednov) so bile kokoši okužene z virulentnima serotipoma A:1 in A:3. Piščanci v skupinah C in D niso bili cepljeni temveč samo okuženi s serotipoma A:1 in A:3. Kokoši v skupini E niso bile niti cepljene, niti okužene. Vzorci krvi so bili odvzeti pri vseh skupinah tedensko za preverjanje humoralnega imunskega odziva. Vse kokoši smo stalno opazovali in beležili prisotnost bolezenskih znakov, različnih ran in umiranje kokoši. Pri poginulih kokoših smo osamili bakterije ter opravili histopatološki pregled. Rezultati encimsko-imunskega testa (ELISA) so pokazali da je bila najvišja stopnja zaščite dosežena 5 tednov po cepljenju, saj so titri dosegli 3970 v skupini A in 3905 v skupini B. Klinični znaki, stopnja umrljivosti in rane so bili pri cepljenih kokoših blagi, hude rane pa so bile vidne pri necepljenih in okuženih kokoših. Stopnja zaščite je bila v skupinah A in B 85- oziroma 80-odstotna, v skupinah C in D pa 10- oziroma 20-odstotna. Stopnje ponovne izolacije P. multocida po okužbi so bile 90 in 95 odstotkov pri kokoših, ki niso bile cepljene, medtem, ko so bile v skupinah, ki so bile okužene s P. multocida serotipa A:1 in A:3 15- in 25-odstotkov. Histopatološki pregled cepljenih in okuženih kokoši je pokazal popolno odsotnost ali prisotnost blagih mikroskopskih poškodb, medtem ko so imele necepljene okužene kokoši bolj obsežne histopatološke poškodbe. Pripravljena inaktivirana bakterija FC iz lokalnih egiptovskih prevladujočih serovarov P. multocide se je izkazala za učinkovito zaščito kokoši nesnic.Ključne besede: Pasteurella multocida; kokoši; imunizacija; zaščita; Egipt

scholarly journals Clinicopathological Changes of Experimentally Induced Fowl Cholera in Jinding Ducks

1970 ◽  
Vol 1 (1) ◽  
pp. 9-13 ◽  
Author(s):  
MA Islam ◽  
MA Samad ◽  
MB Rahman ◽  
SML Kabir
Keyword(s):  
Mortality Rate ◽  
Incubation Period ◽  
Experimental Infection ◽  
Pasteurella Multocida ◽  
Clinical Signs ◽  
Fowl Cholera ◽  
Vascular Congestion ◽  
Chicken Isolate ◽  
The Dead ◽  
Severe Weakness

Clinicopathological changes of duck cholera were studied in 16-week-old 10 susceptible ( PHA titre≤8.00 ) Jinding breed ducks during the period from October 2002 to March 2003. Each of the experimental duck was inoculated with a virulent chicken isolate of Pasteurella multocida @ 5.4 x 106 CFU / ml per bird intramuscularly. The incubation period varied from 12 to 48 hours with 100% mortality rate between 24 to 72 hours of infection. These affected ducks showed clinical signs of fever, anorexia, dullness, depression, ruffled feathers, severe weakness, drowsiness, whitish diarrhoea with mucus, exudation from eyes, lameness and unable to hold the head with beak touching the ground before death. Necropsy examination of the dead ducks showed septicaemic conditions, blood vascular congestion, haemorrhagic enteritis, increased amount of pericardial and peritoneal fluids, swollen and sometimes congested liver with multiple necrotic foci on the parietal surface, enlarged and edematous heart with echymotic haemorrhages. Trachea and lungs were severely congested and haemorrhagic and serofibrinous exudates were seen in the lung, liver and heart. The P. multocida organism was reisolated from the swabs of liver and heart of all the dead ducks by standard bacteriological techniques. This study was confirmed the virulence and pathogenicity of chicken isolate of P. multocida in ducks.Key words: Experimental infection; Duck cholera; pathogenicity; clinicopathological changes DOI = 10.3329/bjvm.v1i1.1910 Bangl. J. Vet. Med. (2008). 1(1): 09-13

scholarly journals Cholera Case Study on Broiler Poultry Collected from Communities Farm in Banda Aceh Using Pathology Method

2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Zainuddin Z
Keyword(s):  
Broiler Chickens ◽  
Pasteurella Multocida ◽  
Mortality Rates ◽  
Morbidity And Mortality ◽  
Bacterial Disease ◽  
High Morbidity ◽  
Northern Iran ◽  
Fowl Cholera ◽  
The World

Fowl cholera is an infectious bacterial disease that is widespread in poultry in the world caused by Pasteurellamultocida. The disease infects both fowl and wild poultry. Poultry become more sensitive to the disease on advance age of chicken and on laying chicken. Generally, thisdisease infects breeding flocks of males with the aged of 33 weeks, and in breeding flocks at age 35 weeks with the symptoms of increasedmortality, and wattle and leg swelling. P multocida infection in chickens aged 25 weeks was reported in Korea. In northern Iran, cholera hasbeen reported endemic in poultry breeders. In chickens, this disease can be manifested in the acute and chronic forms. Generally, fowl cholera isasepticemic disease characterized by high morbidity and mortality rates, usually runs an acute, but in an endemic area the poultry is lesssensitive to this disease, thus,it was grouped to chronic disease. Chronic form of fowl cholera may occur after the outbreak. Recently, fowlcholera incidence in broiler chickens is becoming more common. These cases are associated with farm conditions that are very unhygienic andthe contact between chickens and carrier animals. In Indonesia P. multocida has been isolated from sudden deathlaying hens and broilers. InAceh province incidence of cholera in poultry broiler farms and chicken is quite high, the rate of morbidity and mortality are high.____________________________________________________________________________________________________________________Key words: chicken, fowl cholera, Pasteurella multocida

scholarly journals Pathological Study of Bacterial Infection that Causes Liver Lesions in Chickens

2019 ◽  
pp. 1-6
Author(s):  
Md. Mahbubul Alam Sarker ◽  
Shaziea Rahman ◽  
Md. Saroat Hossain ◽  
Mamunur Rashid Sarkar ◽  
Sm. Ahasanul Hamid
Keyword(s):  
Broiler Chickens ◽  
Clinical Signs ◽  
Disease Diagnosis ◽  
The Body ◽  
Coagulation Necrosis ◽  
Liver Lesions ◽  
Bacterial Diseases ◽  
Poultry Disease ◽  
Histomorphological Changes ◽  
Layer Chickens

In Bangladesh, poultry disease diagnosis almost entirely depends upon the post mortem examination. The present study was conducted to determine the prevalence of bacterial diseases and liver lesions in chickens based on gross and microscopic lesions. The study was conducted to 377 liver samples collected from chickens from July to December 2017 in the Rajshahi district, Bangladesh. During the collection of samples, clinical signs and gross changes were recorded very carefully. Histomorphological changes were investigated under a light microscope and the lesions were characterized. In this study, the overall prevalence of bacterial diseases was recorded as 14.05% whereas layer chickens (9.54%) and broiler chickens (4.50%). During the study, the prevalence of Salmonellosis was found 8.22% whereas 11.66% in layer chickens and 3.25% in broiler chickens. On the other hand, the prevalence of Colibacillosis was identified 5.83% in chickens in which 3.18% were broiler chickens and 2.65% were layer chickens. In the case of Salmonellosis, grossly livers were friable, congested, enlarged, bronze discoloration with white focal necrosis, egg follicles were congested and hemorrhagic with stalk formation; microscopically livers formed multifocal nodules with coagulation necrosis. Birds with Colibacillosis grossly showed fluid accumulation in the peritoneal cavity of chicks, dark-colored swollen liver and spleen, and perihepatitis. The fatty liver hemorrhagic syndrome showed clotted blood on the liver, congested, enlarged and friable liver, paleness of the body and excess abdominal fat. From the present study, it was evident that considerable numbers of liver lesions were observed in chicken and a systematic study of liver lesions is helpful in making a diagnosis of various poultry diseases.

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