Podcast
Questions and Answers
Which of the following characteristics does NOT describe Leptospira species?
Which of the following characteristics does NOT describe Leptospira species?
Which bacterial genus is recognized for producing a red pigment in nutrient agar at 25°C?
Which bacterial genus is recognized for producing a red pigment in nutrient agar at 25°C?
What is the reservoir for Coxiella burnetti?
What is the reservoir for Coxiella burnetti?
The Johnin test is primarily used for which diagnosis?
The Johnin test is primarily used for which diagnosis?
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Which organism is responsible for Lyme's disease?
Which organism is responsible for Lyme's disease?
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Diamond skin disease in pigs is caused by which of the following?
Diamond skin disease in pigs is caused by which of the following?
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Which of the following is classified as a dimorphic fungi?
Which of the following is classified as a dimorphic fungi?
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Which test is commonly used to test for tuberculosis?
Which test is commonly used to test for tuberculosis?
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Study Notes
Ascoli's Test
- Detects presence of antigens in serum or tissue extracts.
- Used for diagnosing anthrax.
Tuberculin Test
- Principle: Measures delayed-hypersensitivity reaction in previously infected animals.
- Uses tuberculin, a purified protein derivative from Mycobacterium tuberculosis.
- Administered intradermally or subcutaneously.
- Evaluates response after 48-72 hours.
- Used to diagnose tuberculosis in cattle.
Black Quarter in Cow
- Caused by Clostridium chauvoei.
- Characterized by sudden death, muscle swelling, and crepitus (gas production under the skin).
- Diagnosis: Isolation and identification of the bacteria from affected tissues.
Haemorrhagic Septicaemia in Buffalo
- Caused by Pasteurella multocida.
- Characterized by high fever, respiratory distress, hemorrhage in internal organs, and sudden death.
- Diagnosis: Isolation and identification of the bacteria from affected tissues.
Mycotoxins
- Toxic secondary metabolites produced by fungi.
- Can cause various diseases in animals and humans.
- Examples include aflatoxins, ochratoxins, and zearalenone.
Kauffman and White Schema
- Classification scheme for Salmonella serotypes.
- Based on the presence or absence of specific O, H, and Vi antigens.
- Used for epidemiological studies and diagnosis of salmonellosis.
Brucellosis
- Caused by Brucella spp. (B. abortus, B. suis, B. melitensis).
- Morphology: Small, gram-negative coccobacilli.
- Pathogenesis: Zoonotic disease primarily affects reproductive organs.
- Can cause abortion, sterility, and inflammation in animals.
- Diagnosis: Isolation and identification of the bacteria from aborted fetuses, milk, or blood.
- Serological tests (agglutination, complement fixation, ELISA) are also used.
Mycoplasma
- Smallest free-living prokaryotes.
- Lack a cell wall, have a three-layered membrane.
- Morphology: Pleomorphic, round or filamentous shape.
- Pathogenesis: Can cause respiratory, reproductive, and joint diseases in cattle.
- Diagnosis: Isolation and identification of the bacteria from affected tissues or fluids.
Johnin Test
- Used for diagnosing paratuberculosis (Johne's disease) in cattle.
- Administered intradermally.
- Evaluates response after 48-72 hours.
Lyme's Disease
- Caused by Borrelia burgdorferi.
- Transmitted by ticks (Ixodes spp.).
- Characterized by a circular rash at the site of the tick bite, fever, joint pain, and neurological problems.
Diamond Skin Disease in Pigs
- Caused by Erysipelothrix rhusiopathiae.
- Characterized by diamond-shaped reddish lesions on the skin.
- Can also cause arthritis and endocarditis.
Dimorphic Fungi
- Exhibit two distinct morphological forms depending on the environment.
- Coccidioides immitis, Trichophyton verrucosum, and Microsporum canis are examples.
- One form usually occurs in the environment, while the other form grows in the host.
Leptospira
- Slender, helical bacteria.
- Possesses hook-shaped ends.
- Has 6-10 periplasmic flagella for motility.
- Transmitted through contact with infected urine.
- Does not require an insect vector.
Serratia
- Produces red pigment on nutrient agar at 25°C.
- Commonly associated with opportunistic infections in humans.
Coxiella burnetti
- Reservoir: Ticks
- Obligate intracellular bacterium.
- Causes Q fever in humans and animals.
Multiple-Choice Questions Answers:
- i) d) Insect vector not required
- ii) c) Serratia
- iii) b) Ticks
- iv) c) Paratuberculosis
- v) c) Borrelia burgdorferri
- vi) b) Erysipelothrix rhusiopathiae
- vii) d) All of these
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Description
This quiz covers crucial veterinary diagnostic tests, including Ascoli's test, tuberculin test, and the identification of specific diseases such as Black Quarter and Haemorrhagic Septicaemia. Learn how to diagnose these conditions through understanding the underlying causes and methods used in veterinary practice.
