Podcast
Questions and Answers
What is the pH range that inactivates the Foot and Mouth Disease virus?
What is the pH range that inactivates the Foot and Mouth Disease virus?
Which of the following animals is NOT a maintenance host for Foot and Mouth Disease?
Which of the following animals is NOT a maintenance host for Foot and Mouth Disease?
What is the primary mode of transmission for Foot and Mouth Disease?
What is the primary mode of transmission for Foot and Mouth Disease?
What is the name of the virus that causes Porcine Reproductive and Respiratory Syndrome?
What is the name of the virus that causes Porcine Reproductive and Respiratory Syndrome?
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What is the common name for Porcine Reproductive and Respiratory Syndrome?
What is the common name for Porcine Reproductive and Respiratory Syndrome?
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What is the outcome of Foot and Mouth Disease in terms of mortality rate?
What is the outcome of Foot and Mouth Disease in terms of mortality rate?
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What is the primary goal of control measures for Foot and Mouth Disease?
What is the primary goal of control measures for Foot and Mouth Disease?
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What is NOT a common clinical sign of Foot and Mouth Disease in cattle?
What is NOT a common clinical sign of Foot and Mouth Disease in cattle?
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What is the type of RNA found in the Foot and Mouth Disease virus?
What is the type of RNA found in the Foot and Mouth Disease virus?
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What is the main effect of Foot and Mouth Disease on milk production in cattle?
What is the main effect of Foot and Mouth Disease on milk production in cattle?
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Study Notes
HOG CHOLERA (CLASSICAL SWINE FEVER)
- Etiology: The virus is transmitted through direct contact and is shed in secretions and excretions.
- Infected swine can be long-term carriers, shedding the virus for up to 157 days.
- Symptoms and Clinical Signs:
- Acute type:
- Lethargy, inappetence, fever, and cyanosis in ear, tail, vulva, and snout.
- Rapid abnormal breathing, premature farrowing, increased stillborn and mummified fetuses, and preweaning mortality.
- Lost libido in boars.
- Chronic type:
- Secondary bacterial infections, decreased FCR.
- Subclinical type:
- Many herds are diagnosed as seropositive but show no clinical signs.
- Acute type:
- Treatment: No effective treatment, vaccines are available.
GLOSSARY OF TERMS
- ssRNA: Single-stranded RNA.
- dsRNA: Double-stranded RNA.
- HPAI: Highly Pathogenic Avian Influenza.
- LPAI: Low Pathogenic Avian Influenza.
- Terms in Susceptible Population:
- Amplifying host.
- Indicator host.
- Maintenance host.
- Clinical Sign Terms:
- Ataxia.
- Conjunctivitis.
- Coronary band.
- Ecchymosis.
- Epithelium.
- Farrowing.
- Hyperkeratosis.
- Hypoplasia.
- Interdigital.
- Malaise.
- Masseter muscle.
- Mucopurulent.
- Nystagmus.
- Opisthotonos.
- Parameters.
- Phonation.
- Preweaning.
- Prognosis.
- Prostration.
- Rhinitis.
- Seropositive.
- Torticollis.
- Vesicular.
VIRAL DISEASES (RNA VIRUSES)
FOOT AND MOUTH DISEASE
- Definition: Considered the most economically devastating livestock disease virus in the world.
- Causative Agent: Aphthovirus, ssRNA.
- Susceptible Population: Mainly affects cloven-hooved animals, with sheep and goats as maintenance hosts, pigs as amplifying hosts, and cattle as indicator hosts.
- Etiology: Transmission primarily occurs through respiratory aerosols or direct and indirect contact.
- Symptoms and Clinical Signs:
- In cattle: Fever, anorexia, depression, decreased milk production, drooling of saliva, and vesicles of interdigital skin and coronary band of the feet.
- Treatment: No treatment is available, control is mainly focused on culling infected animals, and vaccines are available.
PORCINE REPRODUCTIVE AND RESPIRATORY SYNDROME
- Other Name: Mystery Swine Disease, Swine Infertility and Respiratory Syndrome (SIRS), Blue-eared disease.
- Causative Agent: Lelystad virus, ssRNA.
- Susceptible Population: Swine.
- Etiology: Transmission primarily occurs through respiratory aerosols or direct and indirect contact.
- Symptoms and Clinical Signs: Not specified.
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Description
This quiz covers the impact of viral diseases, specifically RNA viruses, on cattle production and economics. It focuses on the effects of Foot and Mouth Disease on cattle health and milk yield.
