Poultry medicine Flashcards
All of which are methods of poultry restraint, except?
a. Simultaneously grab the bird by leg and wings
b.Carry small birds by both legs
c. Blindfold the eyes of the bird
d.None of the above
None of the above
Which of the following is not a threat to the bird during restraint?
a.Fracture
b.Suffocation
c.Escape
d.None of the above
None of the above
It is an extra thoracic diverticulum of the esophagus in birds that acts as a short-term storage organ for food. Digestion of starch is initiated here.
a.Ceca
b.Proventriculus
c. Crop
d.Ventriculus
Crop
A 2-week-old chicken flock exhibiting signs of anorexia, lethargy, depression, and paleness. Additionally, ecchymotic hemorrhages that gave the appearance of blue wings were seen on the wings. Which of the following is most likely the diagnosis?
a. Dissecting aneurysm
b.Inclusion body hepatitis
c. Chicken anemia virus infection
d.Perirenal hemorrhage syndrome
Chicken anemia virus infection
All are diseases caused by Fowl adenovirus, except?
a.Hydropericardium syndrome
b.Inclusion body hepatitis
c.Newcastle disease
d.Gizzard erosion
Newcastle disease
What inclusion bodies are found in cases of fowl adenovirus infection?
a.Basophilic intranuclear
b.Basophilic intracytoplasmic
c.Eosinophilic intracytoplasmic
d.None of the above
Basophilic intranuclear
Many turkeys on a poultry farm develop thickened crop mucosa and whitish, raised pseudomembranes. The same lesions are present in the mouth and esophagus. Which intervention will not help to control the disease?
a. Antibiotic treatment
b.Antifungal treatment
c. Stress reduction
d.Sanitation and disinfection
Antibiotic treatment
A poultry farm reported an increase in mortality and diarrhea in its 2-week-old flock. Upon necropsy, the ceca has a build-up of blood and tissue debris. Which Eimeria species is most likely to be the diagnosis?
a. E. necatrix
b. E. tenella
c. E. acervulina
d. E. maxima
E. tenella
A dozen young chickens at a broiler-raising facility are found dead on their backs and sides with no premonitory signs. Other birds appear cyanotic, with distended and reddened abdomens and congested blood vessels. Affected birds have an increased respiratory rate and reduced exercise tolerance. Necropsy of a dead chicken shows variable amount of clear yellow fluid and clots of fibrin in the hepatoperitoneal spaces. What is the clinical diagnosis?
a. Colibacillosis
b. Ascites syndrome
c. Salmonellosis
d. Inclusion body hepatitis
Ascites syndrome
Which of the following is not a common lesion found in cases of necrotic enteritis?
a. Pseudomembrane formation
b.Intestinal ballooning
c. Coagulative necrosis
d.Intussusception
Intussusception
The following signs and lesions are associated with avian nephritis virus infection, except?
a.Renal damage
b.High mortality
c.Visceral urate deposits
d.Growth retardation
High mortality
A 7-day-old commercial broiler farm reported a high first-week mortality rate. The chickens were unthrifty, had unhealed navels, and had varying degrees of respiratory signs. Necropsy showed airsacculitis and fibrinous exudate on the liver and pericardial sac. Which of the following diseases is most likely affecting this flock?
a.Sudden death syndrome
b.Egg drop syndrome
c. Colibacillosis
d.Candidiasis
Colibacillosis
A dozen young chicks at a broiler farm are found dead on their backs and sides with no premonitory signs. Affected birds appear to be healthy, feeding, sparring, walking, or resting, but suddenly extend their necks, gasp or squawk, and die rapidly. How will you manage this condition?
a. Increasing energy and protein level in the diet
b.Controlling nutrient intake
c. Extending the number of light per day
d.Ad libitum feeding
Controlling nutrient intake
A flock of chickens from a poultry operation is presented with an outbreak that began two days ago with the unexpected discovery of 20 dead birds. Since then, illness has affected about 25% of the flock. Birds are depressed and anorexic, many with mucoid discharge from the beak, ruffle feathers, diarrhea, and an increased respiratory rate. Two birds have torticollis, and several chickens have swollen sternal bursa, wattles, joints, tendon sheaths, and foot pads. Which of the following is the most likely diagnosis?
a. Candidiasis
b.Infectious bronchitis
c. Aspergillosis
d.Fowl cholera
Fowl cholera
Many turkeys on a poultry farm develop whitish “wart-like” nodules and scabs on the comb, wattles, feet, and vent. Which management intervention would most likely help prevent spread of the disease?
a. Control mosquito population and vaccination
b.Controlling nutrient intake
c. Antibiotic therapy
d.Bacterins
Control mosquito population and vaccination
What inclusion bodies are found in cases of fowl pox infection?
a.Basophilic intranuclear
b.Basophilic intracytoplasmic
c.Eosinophilic intracytoplasmic
d.None of the above
Eosinophilic intracytoplasmic
What reactions indicate successful immunization against avian pox?
a.Swelling and scab formation at the site of vaccination
b.Mild respiratory challenge
c. Decrease feed intake
d.Diarrhea
Swelling and scab formation at the site of vaccination
What is the most prevalent helminth species in commercial poultry operations?
a.Heterakis gallinarum
b.Raillietina spp.
c.Ascaridia galli
d.Davainea proglottina
Ascaridia galli
Which disease is transmitted primarily by Heterakis gallinarum?
a. Mycoplasmosis
b.Histomoniasis
c. Colibacillosis
d.Trichomonosis
Histomoniasis
When does a normal bursa of Fabricius begin to involute?
a. 1-3 days
b. 7-10 days
c. 28-30 days
d. 40-42 days
40-42 days
After infection with infectious bursal disease virus (IBDV), when does bursal atrophy occur?
a. 1-3 days
b. 7-10 days
c. 28-30 days
d. 40-42 days
7-10 days
Which of the following etiologic agents is not associated with malabsorption syndrome?
a. Enterovirus
b. Reovirus
c. Mycotoxins
d. Gyrovirus
Gyrovirus
A 14-week-old broiler breeder farm exhibits symptoms of nasal discharge and respiratory issues. In addition, several birds exhibit depression, decreased consumption of food and water, and facial swelling. On laboratory test, the colony shows a typical “fried egg” appearance under low magnification. Which of the following diseases is most likely affecting the flock?
a. Mycoplasmosis
b. Infectious bronchitis
c. Infectious laryngotracheitis
d. Avian influenza
Mycoplasmosis
Which of the following is not appropriate treatment for Mycoplasmosis?
a. Tylosin
b. Tilmicosin
c. Penicillin
d. Doxycycline
Penicillin
Which organ is primarily affected in cases of aflatoxicosis?
a. Lungs
b. Kidneys
c. Liver
d. Bursa of Fabricius
Liver
What is the most likely cause of distorted pupils in chickens? Other affected chickens show signs of depression, transient paralysis, atherosclerosis, and persistent neurologic disease.
a. Infectious laryngotracheitis
b. Marek’s disease
c. Fowl cholera
d. Infectious bronchitis
Marek’s disease
What nerve(s) are affected by the condition in Marek’s disease?
a. Sciatic nerve
b. Brachial nerve
c. Vagus nerve
d. All of the above
All of the above
In Marek’s disease what is the primary mode of transmission for the
condition?
a. Vertical transmission
b. Dust or dander
c. Feco-oral route
d. Oral washing
Dust or dander
Many hens in a large backyard flock recently became ill after the owner purchased four
new chickens. The sick hens are gasping, coughing and sneezing. They have poor
appetite and act depressed. Some affected birds have watery green diarrhea and
swelling of the head and neck. A few have paralyzed legs and wings, twisted necks, are
circling, and have tremors or clonic spasms. Birds are not laying well and some eggs are
misshapen with watery albumen. Necropsy of a dead chicken shows petechial hemorrhages on the mucosal surface of the proventriculus and gizzard. Which of the following diseases is most likely affecting this flock?
a. Infectious coryza
b. Infectious bronchitis
c. Infectious laryngotracheitis
d. Newcastle disease
Newcastle disease
In Newcastle, what is the mode of transmission for the condition?
a. Direct contact of secretions
b. Indirect contact of secretions
c. Feco-oral route
d. All of the above
All of the above
What samples are required to confirm the condition in Question 29?
a. Oropharyngeal swab
b. Cloacal swab
c. Organ samples from dead birds
d. All of the above
All of the above
Which of the following measures is likely to have the least impact on preventing omphalitis in young chickens?
a. Use of antibiotics
b. Use of sanitizing detergents
c. Use of formaldehyde for fumigation
d. Setting clean and dirty eggs separately
Use of antibiotics
A guinea fowl farm reported that 100% of its 2-week-old keets died in the course of two weeks. Huddling, depression, and white fecal paste around the vent were among the clinical signs observed. All keet that was examined had necrotic foci in its enlarged liver, kidneys, and spleen, as well as enteritis with cecal cores and an unabsorbed yolk sac. What disease has likely affected this flock the most?
a. Pullorum disease
b. Fowl cholera
c. Mycoplasmosis
d. Infectious bronchitis
Pullorum disease
Which the following is the causative agent of fowl typhoid?
a. Salmonella Pullorum
b. Salmonella Gallinarum
c. Salmonella Enteritidis
d. None of the above
Salmonella Gallinarum
Which the following is the causative agent of fowl paratyphoid
infection?
a. Salmonella Pullorum
b. Salmonella Gallinarum
c. Salmonella Enteritidis
d. None of the above
Salmonella Enteritidis
Which the following is not a risk factor in cases of cannibalism?
a. Overcrowding
b. Underweight pullets entering production
c. Excessive light intensity
d. Insufficient feeder space
Underweight pullets entering production
Which the following is not a predisposing factor in the development of breast blisters?
a. Leg weakness
b. Poor feathering
c. Dry litter condition
d. Chemical burn
Dry litter condition
You are presented with a backyard chicken one Saturday at your clinic. The owners report that the hen is laying less eggs than normal and seems listless. You examine the chicken and observe tiny blackish brown specks moving around the vent. Which one of the following is the most likely diagnosis?
a. Dermanyssus gallinae
b. Ornithonyssus sylviarum
c. Megninia cubitalis
d. Knemidocoptes mutans
Ornithonyssus sylviarum
Which area is not usually affected by Gangrenous dermatitis?
a. Legs
b. Breast
c. Wings
d. None of the above
None of the above
The dressing plant supervisor reported an increase in carcass downgrade due to the presence of “green hocks”. Leg samples submitted to the laboratory showed swollen leg joints, hemorrhage, and ruptured gastrocnemius tendon. Which one of the following is the most likely diagnosis?
a. Newcastle disease
b. Viral arthritis
c. Fowl adenovirus
d. Avian influenza
Viral arthritis
Which of the following conditions is not present in cases of erratic oviposition and defective egg syndrome (EODES)?
a. Double-yolked eggs
b. Prolapse of the oviduct
c. Internal laying
d. Cystic right oviduct
Cystic right oviduct
A commercial layer farm expecting to hit peak production has reported decreasing egg production as well as pale, thin-shelled, and shell-less eggs. The birds appeared to be in good health, although a few are showing transient mild depression and mild watery droppings. Which one of the following is the most likely diagnosis?
a. Infectious bronchitis
b. Egg drop syndrome
c. Newcastle disease
d. Avian influenza
Egg drop syndrome
Eye infections were first observed in single-comb white leghorn breeder chicks at 5 days of age, and morbidity increased from 0.05% to 1.5% by 7 days. All chicks necropsied at 15 days of age had cheesy yellow exudate within the conjunctival sac of one eye and small (1 mm diameter) white nodular lesions in the lungs and on the thoracic air-sac membranes. Histopathologic examination of the eyes and lung granulomas revealed septate fungal hyphae. Which one of the following is the most likely diagnosis?
a. Mycobacteriosis
b. Brooder pneumonia
c. Avian leukosis
d. Colibacillosis
Brooder pneumonia
What is the subtype of the first reported highly pathogenic avian influenza in the Philippines?
a. A(H3N8)
b. A(H7N9)
c. A(H5N1)
d. A(H5N6)
A(H5N6)
Which of the following factors will not contribute to the spread of avian influenza virus?
a. Movement of infected birds
b. Farming and sale
c. Wild birds and migratory routes
d. None of the above
None of the above
The spread of avian metapneumovirus (AMPV) or turkey rhinotracheitis depend on the following factors, except?
a. Poultry population density
b. Standard of hygiene
c. Biosecurity
d. None of the above
None of the above
A chicken operation has recently been ravaged by a respiratory disease affecting almost all of the chickens in the flock. The chickens are coughing and sneezing and many have facial swelling. You necropsied many of the chickens and found mucoid exudate in the bronchi, thickened air sacs, and in a few of the chickens, interstitial nephritis was present. Which of these diseases is likely?
a. Infectious bronchitis
b. Infectious bursal disease
c. Fowl cholera
d. Aspergillosis
Infectious bronchitis
Where can you find the lesions in acute infectious coryza?
a. Wattles
b. Sinus
c. Trachea
d. Air sacs
Sinus
Where can you find the lesions in acute infectious laryngotracheitis?
a. Wattles
b. Sinus
c. Trachea
d. Air sacs
Trachea
Which of the following is not a manifestation of vitamin E deficiency in poultry?
a. Encephalomalacia
b. Muscle dystrophy
c. Exudative diathesis
d. None of the above
None of the above
