post mortem diagnosis of poultry
TRANSCRIPT
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Post Mortem Diagnosis of Poultry
Dept. of Medicine and Public HealthSher-e-Bangla Agricultural University
Sher-e-Bangla Agricultural University
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Disease diagnosis in Poultry
Four Components
History
Symptoms
PM Lesions
Laboratory
Mortality
Control and Prevention
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Topic to be discussed…
1. Anatomy of the Chicken
2. Basics of Post Mortem
3. Viral Diseases
4. Bacterial Diseases
5. Fungal Diseases
6. Protozoal Diseases
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Anatomy of the Chicken
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Anatomy of the Chicken
Digestive System
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Anatomy of the Chicken
Digestive System
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Anatomy of the Chicken
Reproductive System
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Anatomy of the Chicken
Reproductive System
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Anatomy of the Chicken
Reproductive System
Infundibulum catches the ovum released by
Ovary in abdominal cavity
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Anatomy of the Chicken
Reproductive System
Egg in Magnum
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Egg in Uterus
Anatomy of the Chicken
Reproductive System
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Anatomy of the Chicken
Respiratory system
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Anatomy of the Chicken
Urinary System
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Anatomy of the Chicken
Respiratory system
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Anatomy of the Chicken
Immune system
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Topic to be discussed…
1. Anatomy of the Chicken
2. Basics of Post Mortem
3. Viral Diseases
4. Bacterial Diseases
5. Fungal Diseases
6. Protozoal Diseases
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Examination
• Preliminary
o done while observing birds
• Complete
o must catch bird
o systematic examination of anatomic systems
o checking for variation from normal
Basics of Post Mortem
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© Kemin Industries, Inc. and its group of companies 2012 All rights reserved. ®™ Trademarks of Kemin Industries, Inc.,U.S.A.
1. Discharges
2. Accumulations
3. Abnormal sounds, odors, colors
4. Swellings
5. Soiling of feathers
6. Loss
1. Skeletal
2. Respiratory
3. Plumage
4. Circulatory
5. Eyes, ears, nostrils
6. Gastrointestinal
7. Feces
Basic of Post Mortem Examination
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Learn Symptoms of Disease
• Increased mortality
• No appetite
• Diarrhea
• Coughing
• Lameness
• Depression
• Decreased production
• Unusual behaviors
• Blisters, swellings
• High number of ill animals
• Unthriftiness
Basics of Post Mortem
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Topic to be discussed…
1. Anatomy of the Chicken
2. Basics of Post Mortem
3. Viral Diseases
4. Bacterial Diseases
5. Fungal Diseases
6. Protozoal Diseases
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Newcastle Disease
Avian Influenza
Infectious Bronchitis (IB)
Marek’s Disease
Lymphoid Leukosis
Fowl Pox
Infectious Laryngo Tracheitis
Infectious Bursal Disease (IBD)
Diseases caused by REO viruses
Inclusion Body hepatitis
Chicken Infectious Anemia
Viral Diseases
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Viral Diseases
Newcastle Disease
Paramyxo virus
Sick birds excrete the virus faeces, nasal and genital
secretions
Depression, closed eyes, drooping wings, loss of
appetite, Greenish diarrhoea
Twitching of neck, incoordination or paralysis
Pinpoint haemorrhages are found at the tips of
proventriculus, ulcers in intestines and CT
Treatment: Control 2ndry bacterial infection
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Newcastle Disease- Torticollis
Viral Diseases
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Newcastle Disease- Depression
Viral Diseases
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Newcastle Disease- Proventricular Hemorrhages
Viral Diseases
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Newcastle Disease- Enteritis
Viral Diseases
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Viral Diseases
Avian Influenza
Orthomyxovirus
Wild birds, Through air and water
Die without symptoms
Cynosis of combs and wattles, Edema of face
Widespread hemorrhages in all internal organs
Treatment: Control 2ndry bacterial infection
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Avian Influenza- Swollen head and discharges
Viral Diseases
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Avian Influenza- Respiratory symptoms
Viral Diseases
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Avian Influenza- blue cyanotic combs and wattles
Viral Diseases
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Avian Influenza- Subcutaneous hemorrhagic shanks
Viral Diseases
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Viral Diseases
Infectious Bursal Disease (IBD)
Cause: Birna virus
Contaminated water and feed
Diarrhoea, sit quiet with closed eyes
An enlarged haemorrhagic bursa of Fabricius
Treatment: Control 2ndry bacterial infection
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IBD- Breast muscle hemorrhage
Viral Diseases
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IBD- Hemorrhage in thigh muscle
Viral Diseases
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IBD- Hemorrhage in
proventriculus- gizzard junction
Viral Diseases
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IBD- Hemorrhagic bursa
Viral Diseases
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Viral Diseases
Infectious Bronchitis (IB)
Cause: Corona virus
Aerosol and secretions
Chicks- sneezing, coughing, respiratory sound
Adults- Drop in egg production, thin& wrinkled eggs
Kidney enlarged, grayish and mottled
Treatment: Control 2ndry bacterial infection
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IB- Gasping
Viral Diseases
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IB- Nephritis
Viral Diseases
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IB- Egg abnormalities
Viral Diseases
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IB-Bronchial plugs
Viral Diseases
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Viral Diseases
Infectious Laryngo Tracheitis (ILT)
Cause: Herpes virus
Aerosol and secretions
Replication in the tracheal mucosa and latent
High mortality
Treatment: Control 2ndry bacterial infection
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ILT- Exudates in Trachea
Viral Diseases
Caseous
Hemorrhagic
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Viral Diseases
Diseases caused by REO Viruses
Transovarian
Viral arthritis: Affects 3-16 wks of age
Runting syndrome (helicopter disease, brittle bone
disease): Affects 1 to 2 wks old birds
Pasty vent disease: White pasty excreta which may
stick around vent feathers
Respiratory disease
Treatment: Control 2ndry bacterial infection
Prevention: PS Vaccines & Biosecurity
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REO-Runting and Stunting syndrome
Viral Diseases
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REO-Arthritis
Viral Diseases
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Fowl pox
Viral Diseases
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Marek’s Diseases (MD)
Viral Diseases
Herpes virus
Aerosal
Virus shed through feather follicles
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Marek’s Diseases (MD)-Nodular tumors in Liver
Viral Diseases
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Marek’s Diseases (MD)-Sciatic nerve enlargement
Viral Diseases
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Lymphoid Leucosis (LL)
Viral Diseases
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Lymphoid Leucosis (LL)
Viral Diseases
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Inclusion Body Hepatitis (IBH)
Viral Diseases
Adeno virus type 1
Vertical transmission
Oro nasal route also
In the presence of IBD virus, severe mortality
Incubation period 1 to 2 days
Vaccination and bio security
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Inclusion Body Hepatitis (IBH)
Viral Diseases
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Inclusion Body Hepatitis (IBH)-
Hydro pericardium
Viral Diseases
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Chicken Infectious Anemia (CAV)
Viral Diseases
Circa virus
Vertical and horizontal transmission
Oro nasal route also
Vaccination and bio security
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Chicken Infectious Anemia (CAV)-
Pale bone marrow
Viral Diseases
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Infectious Coryza
Chronic Respiratory Disease (CRD)
Pullorum Disease
Fowl Typhoid
Diseases caused by E.coli
Fowl Cholera
Necrotic Enteritis
Bacterial Diseases
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Bacterial Diseases
Infectious Coryza
Bacteria Haemophilus paragallinarum
Occurs any age, mostly adults
Transmission: Water, air, feed
Foul swelling discharges from nostrils and eyes
Face and Wattles may be swollen
Treatment: antibiotics
Prevention: Hygiene
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Infectious Coryza
Bacterial Diseases
Facial edema ( due to bilateral occlusion)
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Bacterial Diseases
Chronic Respiratory Disease (CRD)
Cause: Mycoplasma gallisepticum and Mycoplasma synoviae
4 t 10 weeks old birds, especially broilers
Transmission: Transovarian, horizontal
Sneezing, coughing, gargling sounds during respiration
Cloudy appearance to cheesy material in airsacs
In E.coli complication fibrinous covering in heart and liver
Treatment: antibiotics
Prevention: Mycoplasma control program in PS, Hygiene
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Chronic Respiratory Disease (CRD)
Bacterial Diseases
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Chronic Respiratory Disease (CRD)- Airsacculitis
Bacterial Diseases
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Chronic Respiratory Disease (CRD)- Airsacculitis
Bacterial Diseases
Cheesy material
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Bacterial Diseases
Pullorum Disease
Bacteria Salmonella pullorum or gallinarum
Disease of newly hatched chicks
Transmission: Transovarian
Huddling, loss of appetite and white diarrhoeal
Greyish necrotic spots in liver
Large abscesses in the lungs
White spots on heart and spleen
Treatment: antibiotics
Prevention: Salmonella control program in PS, Hygiene
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Bacterial Diseases
Fowl Paratyhoid
Bacteria Salmonella enteritidis
Similar to Pullorum disease
Transmission: Transovarian
Greyish necrotic spots in liver
Large abscesses in the lungs
White spots on heart and spleen
Treatment: antibiotics
Prevention: Salmonella control program in PS,
Hygiene
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Pullorum Disease
Bacterial Diseases
Greyish-white
necrotic nodules
in lungs
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Pullorum Disease
Bacterial Diseases
Oophoritis
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Pullorum Disease- heart nodules
Bacterial Diseases
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Pullorum Disease- Lung Abscess
Bacterial Diseases
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Pullorum Disease- Liver
Bacterial Diseases
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Bacterial Diseases
Diseases caused by E.coli
Colisepticaemia and Airsacculitis - Milky fluid in
the pericardium, cloudy airsacs, thin covering of
fibrinous exudates on liver
Omphalitis: Yolk sac infection
Treatment: antibiotics
Prevention: Hygiene
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Diseases caused by E.coli - Omphalitis
Bacterial Diseases
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Diseases caused by E.coli – Pericarditis and Perihepatitis
Bacterial Diseases
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Diseases caused by E.coli – Coli septicemia -Salpingitis
Bacterial Diseases
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Diseases caused by E.coli – Coli septicemia
Bacterial Diseases
Egg peritonitis
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Diseases caused by E.coli – Coli septicemia
Bacterial Diseases
• Coli grnuloma (Hjarre’s disease)
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Bacterial Diseases
Fowl Cholera
Bacteria Pastuerella multocide
Acute and chronic form
Transmission: Horizontal, feed and Rodents
Treatment: antibiotics
Prevention: Bio security and Hygiene
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Fowl Cholera- Facial edema
Bacterial Diseases
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Fowl Cholera- Infraorbital swelling
Bacterial Diseases
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Fowl Cholera- wattle swelling
Bacterial Diseases
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Fowl Cholera- Liver petechial and necrotic foci
Bacterial Diseases
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Fowl Cholera- Heart lesion- petechial hemorrhage
Bacterial Diseases
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Fungal Diseases
Brooder pneumonia-Aspergillosis
Aspergillus fumigatus
Lungs show almost raised pinhead sized yellowish
nodules
Mycotoxicosis
Eating of Toxins produced by the fungus feed
Toxins: Aflatoxin, Ochratoxin, T2 toxin
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Fungal Diseases
Brooder Pneumonia
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86
Impact of Aflatoxin in liver health
Normal LiverLiver affected by
mycotoxicosis
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Capillary fragility caused by Aflatoxin
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Impact of Aflatoxin in liver health
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Lungs affected
by mycotoxicosisNormal Lungs
Impact of Fumonisin in lung health
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Oral ulcers in a hen
caused by T-2 Toxin.Gizzard erosion caused by T-2 Toxin,
DAS or MAS (Trichothecenes)
Impact of Trichothecene toxins in Oral and Gizzard health
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Enteritis caused by T-2 Toxin Hemorrhagic and swollen kidneys
caused by Ochratoxin
Impact of T2 toxin and Ochratoxin in intestinal
and kidney health
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THANK YOU FOR
KIND ATTENTION
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