18 Questions
At what temperature does M.avium growth occur?
25°C - 42°C
What is the primary host of Mycobacterium avium?
Birds
How is M.avium's acid-fast staining described?
Strongly acid-fast
Which bird-associated serotypes are frequently found in cattle according to the text?
Serotypes 1 and 2
What type of lesions can M.avium cause in birds?
Gastrointestinal lesions
How do birds become infected with M.avium according to the text?
By ingesting contaminated water or feed
Which organ is generally enlarged in infected birds?
Spleen
Where can ulcers be found in birds infected with tuberculosis?
In any part of the intestine
What is a common characteristic of liver lesions in infected birds?
They contain caseous areas
Which age group of pigs is more susceptible to M.avium infection?
Pigs between 4-8 weeks old
How does the M.avium organism enter swine's body?
Through the tonsils or intestine lining
Where do miliary lesions caused by M.avium commonly develop in cattle after entering through the portal circulation?
Liver
What is the effect of M. avium on lymph nodes in cattle?
Causes minimal lesions
Which animal species have reported cases of progressive tuberculosis caused by M. avium?
Sheep, goats, dogs, and cats
In chickens, what type of immune response is observed with high or intermediate virulent strains of M. avium?
Both cell-mediated and humoral response
What antibodies do cattle produce about 1 to 1.5 weeks after M. avium infection?
Agglutinins and complement-fixing antibodies
How are typical lesions examined for the presence of acid-fast bacilli in the diagnosis of M. avium infection?
Ground in sterile broth
Which method is used to detect M. avium infection in swine?
Ziehl-Neelsen method
Explore the effects of Mycobacterium avium infection on cattle, sheep, goats, dogs, and cats. Learn about how the immune response varies across different species and the potential for progressive tuberculosis caused by M. avium.
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