Poultry: pathology for decreased egg production
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Questions and Answers

Which of the following is a non-pathological reason for egg drop in poultry?

  • Environmental stress
  • Viral disease
  • Bacterial disease
  • Seasonality (correct)

    • Which disease is the most common infectious cause of egg drop and mortality in commercial and backyard poultry?

  • Infectious bronchitis (correct)
  • Avian influenza
  • Newcastle disease
  • Coronavirus

    • What is the primary method of managing coronaviruses in poultry?

  • Bacteriology
  • Histology
  • Serology
  • Vaccination (correct)

    • Which disease causes egg drop with concentric rings on eggshells?

    <p>Newcastle disease</p> Signup and view all the answers

    What is the term used to describe the inflammation of the oviduct in poultry?

    <p>Salpingitis</p> Signup and view all the answers

    Which virus causes mortality up to 100% in 36 hours in poultry?

    <p>Avian influenza</p> Signup and view all the answers

    Which disease is characterized by soft-shelled eggs and concentric rings on the shell?

    <p>Newcastle disease</p> Signup and view all the answers

    Which disease is caused by a coronavirus in poultry?

    <p>Infectious bronchitis</p> Signup and view all the answers

    What is the primary method of managing coronaviruses in poultry?

    <p>Vaccination</p> Signup and view all the answers

    Which virus is responsible for avian rhinotracheitis?

    <p>Pneumovirus</p> Signup and view all the answers

    What is the most effective treatment for infectious laryngotracheitis?

    <p>Vaccination</p> Signup and view all the answers

    Which bacterium is commonly associated with Mycoplasma infections in poultry?

    <p>Avibacterium avium</p> Signup and view all the answers

    What is the primary symptom of infectious coryza in poultry?

    <p>Ocular and nasal discharge</p> Signup and view all the answers

    Which route of administration is commonly used for poultry vaccines?

    <p>Drinking water</p> Signup and view all the answers

    What is the main cause of salpingo-peritonitis in laying hens?

    <p>Ascending infection from a contaminated cloaca</p> Signup and view all the answers

    Which diagnostic method is commonly used for Mycoplasma gallisepticum?

    <p>PCR testing</p> Signup and view all the answers

    What is the impact of infectious coryza on egg production?

    <p>Low egg production</p> Signup and view all the answers

    What is the recommended prevention method for avian rhinotracheitis?

    <p>Vaccination</p> Signup and view all the answers

    What is the primary symptom of mycoplasma infections in poultry?

    <p>Egg drop</p> Signup and view all the answers

    Which of the following is the most common cause of death in older commercial layers?

    <p>Peritonitis</p> Signup and view all the answers

    What is a common diagnosis in chicks and commercial layers as either a primary or secondary pathogen?

    <p>Avian pathogenic E.Coli</p> Signup and view all the answers

    Which of the following is a clinical sign of infection in chicks and commercial layers?

    <p>Poor growth</p> Signup and view all the answers

    What are some post mortem lesions commonly observed in chicks and commercial layers with infections?

    <p>Salpingitis and peritonitis</p> Signup and view all the answers

    What is the recommended treatment for chicken peritonitis?

    <p>Draining ascites and antibiotic treatment</p> Signup and view all the answers

    Which condition is a differential diagnosis for egg peritonitis?

    <p>Hydro-salpingitis</p> Signup and view all the answers

    What is the potential risk associated with chicken peritonitis?

    <p>Transmission to humans</p> Signup and view all the answers

    Which antibiotic is of critical importance for the treatment of egg peritonitis?

    <p>Enrofloxacin</p> Signup and view all the answers

    What is a potential prevention plan for egg peritonitis?

    <p>Combination of vaccination and other veterinary medicines</p> Signup and view all the answers

    What is the color of ascites commonly seen in chicken peritonitis?

    <p>Yellow</p> Signup and view all the answers

    What are the non-pathological reasons for egg drop in poultry?

    <p>Seasonality, hens going broody, geriatric shock</p> Signup and view all the answers

    Name three pathological reasons for egg drop in poultry.

    <p>Environmental stress, flock mortality/morbidity, malnutrition</p> Signup and view all the answers

    Which two diseases cause egg drop with concentric rings on eggshells?

    <p>Newcastle disease, infectious bronchitis</p> Signup and view all the answers

    What is the primary method of managing coronaviruses in poultry?

    <p>Vaccination</p> Signup and view all the answers

    Name three clinical signs of avian influenza in poultry.

    <p>Anorexia, respiratory signs (coughing, sneezing, ruffled feathers), nervous signs</p> Signup and view all the answers

    What is the most common cause of death in older commercial layers?

    <p>Infection of the oviduct that has burst out and caused peritonitis.</p> Signup and view all the answers

    What is the common diagnosis in chicks and commercial layers as either a primary or secondary pathogen?

    <p>Avian pathogenic E.Coli</p> Signup and view all the answers

    What are some clinical signs of infection in chicks and commercial layers?

    <p>Respiratory signs, decreased appetite, poor growth, mortality, high morbidity</p> Signup and view all the answers

    What are some post mortem lesions commonly observed in chicks and commercial layers with infections?

    <p>Enteritis, arthritis, synovitis, omphalitis, salpingitis, peritonitis, perihepatitis, pericarditis, airsacculitis</p> Signup and view all the answers

    What is the recommended treatment for chicken peritonitis?

    <p>Drain ascites, NSAID (Egg withhold for 7 days), antibiotic (if necessary), GnRH analogue - Suprelorin implant, spay</p> Signup and view all the answers

    What are the clinical signs and post-mortem findings associated with avian rhinotracheitis?

    <p>Decreased appetite, facial &amp; head swelling, ocular &amp; nasal discharge, conjunctivitis, snick, dyspnoea, sinusitis; Serous rhinitis and tracheitis, pus in the bronchi.</p> Signup and view all the answers

    What is the treatment for infectious laryngotracheitis?

    <p>No treatment, antibiotics can help with secondary infections.</p> Signup and view all the answers

    What is the diagnostic method commonly used for Mycoplasma gallisepticum?

    <p>Mycoplasma gallisepticum PCR commonly used for diagnosis, culture is difficult, serology can be useful.</p> Signup and view all the answers

    What is the impact of infectious coryza on egg production?

    <p>Low to significant mortality in non-protected flocks; Poor response to antibiotic treatment and no UK licensed vaccines.</p> Signup and view all the answers

    What is the primary cause of salpingo-peritonitis in laying hens?

    <p>Foreign body inflammatory reaction usually so often sterile ascites, but prone to secondary infections (e.g E.coli).</p> Signup and view all the answers

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