Your client has ignored your advice and has housed his chickens and turkeys together.
Many of his chickens now have a mild cough and sneeze while the turkeys have more
severe signs with nasal discharge, swelling of the paranasal sinus and decreased
weight and egg production. What disease do you suspect?
Give this one a try later!
Mycoplasma gallisepticum. The key to this question is the respiratory signs
that are more severe in the turkeys than the chickens. M. gallisepticum
causes severe sinusitis and air sacculitis in turkeys with much milder signs in
chickens. Diagnosis can be made by ELISA, rapid plate agglutination, or
PC.
Fowlpox vaccine is usually administered to chickens by which of the following routes?
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, Wing web injection
Fighting among tom turkeys older than 10-12 weeks of age is a common route of
transmission of which of the following diseases?
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Erysipelothrix rhusiopathiae is a common soil contaminant and can be
spread into skin wounds by turkeys that are fighting.
Which of the following diseases in chickens carries the best prognosis for recovery?
Give this one a try later!
Infectious Coryza
Because infectious coryza is caused by a bacteria, it can be effectively
treated in many cases with antibiotics, whereas the other diseases listed are
viral and carry significantly higher morbidity and mortality with no specific
treatment available.
You have been called to evaluate a flock of approximately 6 week old chicks who
have been showing signs of respiratory disease. You notice that the hatchery
equipment and facilities are run down. You perform a necropsy on one of the affected
chicks and find cream-colored plaques throughout the lungs. What is your
recommendation to the owner?
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, Cull affected animals:
Aspergillus infection (aka brooder pneumonia, mycotic pneumonia, or
pneumomycosis. The best thing to do is kill affected birds as treatment is
considered useless.
Additionally, the facilities should be thoroughly disinfected.
Infectious Laryngotracheitis caused by a herpesvirus. Fowlpox virus produces this
type of inclusions
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intracytoplasmic inclusions.
Turkeys and chickens should not be housed together in order to prevent transmission
of
Give this one a try later!
The correct answer is Histomonas meleagridis to turkeys. This protozoan
parasite, also called blackhead or infectious enterohepatitis, is fatal to
turkeys but less pathogenic to chickens. It causes extensive necrosis of the
liver and cecum. For this reason, chickens and turkeys should not be
housed together and turkeys should not be housed in areas where
chickens were previously housed.
About 15% of the turkeys in a commercial flock have developed swollen, edematous
pectoral muscles. There is degeneration, necrosis, fibrosis and a green appearance of
the muscle which is resulting in condemnation at processing. How can you decrease
the incidence of this condition in the flock?
, Give this one a try later!
Selective breeding
Deep pectoral myopathy, as described in this case, is a heritable condition
associated with rapid growth rate.
Drastic changes in the feed of chickens should be avoided to prevent which of the
following conditions?
Give this one a try later!
Necrotic enteritis (clostridium perfringens)
can cause acute enterotoxemia with sudden onset explosive mortality due
to necrosis of the mucosa of the small intestine. This usually occurs when
intestinal microecology is disturbed (due to changes in feed or damage
from other pathogens or toxins). Diagnosis is made by finding large
numbers of short, thick, gram positive rods in mucosal scrapings.
You are examining a turkey flock and note that many young turkeys appear depressed
and are huddling with ruffled feathers. You note mucoid, blood-stained diarrhea and
perform a fecal exam and see multiple Eimeria oocysts. Which treatment
recommendation would be best for this flock?
Give this one a try later!
Many of his chickens now have a mild cough and sneeze while the turkeys have more
severe signs with nasal discharge, swelling of the paranasal sinus and decreased
weight and egg production. What disease do you suspect?
Give this one a try later!
Mycoplasma gallisepticum. The key to this question is the respiratory signs
that are more severe in the turkeys than the chickens. M. gallisepticum
causes severe sinusitis and air sacculitis in turkeys with much milder signs in
chickens. Diagnosis can be made by ELISA, rapid plate agglutination, or
PC.
Fowlpox vaccine is usually administered to chickens by which of the following routes?
Give this one a try later!
, Wing web injection
Fighting among tom turkeys older than 10-12 weeks of age is a common route of
transmission of which of the following diseases?
Give this one a try later!
Erysipelothrix rhusiopathiae is a common soil contaminant and can be
spread into skin wounds by turkeys that are fighting.
Which of the following diseases in chickens carries the best prognosis for recovery?
Give this one a try later!
Infectious Coryza
Because infectious coryza is caused by a bacteria, it can be effectively
treated in many cases with antibiotics, whereas the other diseases listed are
viral and carry significantly higher morbidity and mortality with no specific
treatment available.
You have been called to evaluate a flock of approximately 6 week old chicks who
have been showing signs of respiratory disease. You notice that the hatchery
equipment and facilities are run down. You perform a necropsy on one of the affected
chicks and find cream-colored plaques throughout the lungs. What is your
recommendation to the owner?
Give this one a try later!
, Cull affected animals:
Aspergillus infection (aka brooder pneumonia, mycotic pneumonia, or
pneumomycosis. The best thing to do is kill affected birds as treatment is
considered useless.
Additionally, the facilities should be thoroughly disinfected.
Infectious Laryngotracheitis caused by a herpesvirus. Fowlpox virus produces this
type of inclusions
Give this one a try later!
intracytoplasmic inclusions.
Turkeys and chickens should not be housed together in order to prevent transmission
of
Give this one a try later!
The correct answer is Histomonas meleagridis to turkeys. This protozoan
parasite, also called blackhead or infectious enterohepatitis, is fatal to
turkeys but less pathogenic to chickens. It causes extensive necrosis of the
liver and cecum. For this reason, chickens and turkeys should not be
housed together and turkeys should not be housed in areas where
chickens were previously housed.
About 15% of the turkeys in a commercial flock have developed swollen, edematous
pectoral muscles. There is degeneration, necrosis, fibrosis and a green appearance of
the muscle which is resulting in condemnation at processing. How can you decrease
the incidence of this condition in the flock?
, Give this one a try later!
Selective breeding
Deep pectoral myopathy, as described in this case, is a heritable condition
associated with rapid growth rate.
Drastic changes in the feed of chickens should be avoided to prevent which of the
following conditions?
Give this one a try later!
Necrotic enteritis (clostridium perfringens)
can cause acute enterotoxemia with sudden onset explosive mortality due
to necrosis of the mucosa of the small intestine. This usually occurs when
intestinal microecology is disturbed (due to changes in feed or damage
from other pathogens or toxins). Diagnosis is made by finding large
numbers of short, thick, gram positive rods in mucosal scrapings.
You are examining a turkey flock and note that many young turkeys appear depressed
and are huddling with ruffled feathers. You note mucoid, blood-stained diarrhea and
perform a fecal exam and see multiple Eimeria oocysts. Which treatment
recommendation would be best for this flock?
Give this one a try later!
