Poultry Diseases: Infectious and Non-Infectious

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main mode of transmission for Fowl Pox?

Transmission through arthropods (correct)

Contaminated water

Direct contact only

Airborne particles

What type of virus causes Mycoplasmosis in birds?

Avian coronavirus

Orthomyxovirus

Mycoplasma gallisepticum (correct)

Fowl poxvirus

What is a significant consequence of Avian Influenza in poultry?

Increased egg production

Reduced egg production and malformed shells (correct)

Increased respiratory function

High mortality in young birds

What does Infectious Bronchitis primarily affect in poultry?

Respiratory health Signup and view all the answers

Which symptom is associated with the pathogenicity of Avian Influenza?

Ocular discharge Signup and view all the answers

What is the necropsy finding commonly associated with Fowl Pox?

Lesions on unfeathered skin Signup and view all the answers

What type of disease is Mycoplasmosis categorized as?

Bacterial infection Signup and view all the answers

What can be a clinical sign of Infectious Bronchitis in young poultry?

High mortality rates Signup and view all the answers

What immediate symptom is indicated by the paresis of the legs or wings due to lead toxicity in poultry?

Inability to stand Signup and view all the answers

What type of Marek's disease strain is frequently found in the Middle East, Asia, and Africa?

Type 1 - vvIBD Signup and view all the answers

What symptom is associated with vitamin D deficiency in birds?

Soft shell eggs Signup and view all the answers

What is a symptom associated with Acute Newcastle Disease?

Harsh breathing Signup and view all the answers

Which of the following conditions is NOT a symptom of Marek's disease?

Increased activity Signup and view all the answers

Which of the following is NOT an effect of Vitamin D deficiency in poultry?

Severe coughing Signup and view all the answers

How can birds infected with Marek's disease shed the virus?

Via dander or feather dust Signup and view all the answers

How is Marek's Disease primarily transmitted among chickens?

Direct contact with infected birds Signup and view all the answers

Lead toxicity in poultry can lead to which of the following symptoms?

Anemia and neural disorders Signup and view all the answers

What is a common result of prolonged lead exposure in poultry?

Decreased egg production Signup and view all the answers

Which disease is characterized by respiratory signs, conjunctivitis, and severe hemorrhagic tracheitis?

Infectious Laryngotracheitis Signup and view all the answers

In Delaware, which type of Marek's disease strain is primarily recognized?

Type 1 - vvIBD Signup and view all the answers

What is one common indicator of immune diseases in birds?

Persistent respiratory infections Signup and view all the answers

What preventive measure is effective against Marek's disease in birds?

Vaccination (MDV) Signup and view all the answers

Which vaccination method is typically NOT used for Newcastle Disease?

Injectable doses only Signup and view all the answers

What is the primary etiological agent behind Infectious Laryngotracheitis?

Gallid herpesvirus 1 Signup and view all the answers

Study Notes

Poultry Infectious and Non-Infectious Diseases

Vitamin Deficiencies:
- Vitamin A Deficiency: Symptoms include respiratory diseases, ataxia, and night blindness.
- Vitamin D Deficiency: Rickets is a common symptom.
- Vitamin E Deficiency: Encephalomalacia and muscular dystrophy.
- Vitamin B Complex Deficiencies: Thiamine, riboflavin, pantothenic acid, biotin deficiency can cause various issues.
- Manganese and Choline Deficiency: Slipped tendon/perosis is a primary symptom. Other orthopedic conditions.
Immunosuppressive Diseases/Viral Diseases:
- Marek's Disease: Also known as leukosis or fowl paralysis. Caused by Herpes virus. Oncogenic, causing tumours. Transmitted horizontally..
Fluoresence of Blood on UV Light: Useful in diagnosing lead poisoning.
- Lead Toxicity: Caused by paint or orchard spray. > 7.2 mg/kg body weight is lethal. Prevention: Provide feed, avoid scattering, test soil and water, elevated wood pallets with rubber mats, and frequently check paint.

Other Diseases

Infectious Bursal Disease: Infects 20-60 day old chicks. Causes edema, swelling, vent pecking, prostration, and mortality. Etiology: Avibirnavirus.
- Type 1 Classic: Highly pathogenic.
- (vvIBD) serotype:
Chicken Infectious Anemia: Caused by Anemia Virus. Symptoms include aplastic anemia, lymphoid atrophy and immunosuppression. Etiology: Non-enveloped DNA virus, classified as circovirus.
Newcastle Disease: Acute, rapidly spreading respiratory disease. Harsh breathing, coughing, sneezing. Etiology: Avian paramyxovirus type 1.
- Three categories of viral pathogenicity: Velogenic-viscerotropic, Mesogenic, Lentogenic.
Infectious Laryngotracheitis: Highly contagious upper respiratory tract disease. Replicates conjunctiva and tracheal mucosa. Epithelial cells are affected. Etiology: Herpesvirus.
Avian Influenza: Subcutaneous hemorrhages on feet and shanks. Ischemic necrosis of comb and wattles. Etiology: Diverse type A orthomyxovirus.
High mortality in young and drop in egg production. Etiology: Specific strains of an avian coronavirus. Vertical and horizontal transmission.
Infectious Bronchitis: Viral disease with high mortality in young birds. Drop in egg production. Etiology: Avian coronavirus. Direct contact or indirectly by fomites.
Aspergillosis: Various fungi, including Aspergillus fumigatus. Spores contaminate egg shells, leading to air cell colonization. Horizontal transmission in the hatchery.
Mycoplasmosis: Respiratory disease caused by Mycoplasma gallisepticum and M. synoviae. Symptoms include unilateral or bilateral or ocular discharge. Etiology: Mycoplasma. Chronic respiratory disease.
Infectious Coryza: Caused by Haemophilus paragallinarum. Three designated types, A, B, and C. Infection through direct or indirect contact.
Salmonellosis (Pullorum): Called "pullorum disease" or "bacillary white diarrhea" for BWD. Potentially world-wide. Vertical transmission is common (transovarial).
Salmonellosis (Typhoid): Etiology Salmonella, Vertical and lateral transmission. Diarrhea, depression, decline in egg production noted in older flocks.
Pasteurellosis: Caused by Pasteurella multocida. Several serotypes. May be chronic or acute. Varied pathogenicity.
Coccidiosis: Caused by Eimeria spp. parasites. Acute generally, characterized by intestinal depression.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Test your knowledge on poultry diseases, focusing on both infectious and non-infectious types. This quiz covers vitamin deficiencies, immunosuppressive diseases, and the effects of lead toxicity. Enhanced understanding can contribute to better poultry management and health.