Avian III

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Avian III
2012-04-28 15:54:24
Avian III

Avian III
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  1. Which digits are absent in birds?
    1 & 5
  2. Where is mucous secreted in the esophagus of birds?
    along its entire length
  3. What part of digestion in the bird contains no glandular secretions of its own, storage organ, softens food, may be bypassed if gizzard is full?
  4. What is thickening of the epithelial lining that sloughs and is regurgitated?
    Crop milk
  5. What is the glandular stomach that contains acid, mucous, pepsinogen, pepsin?
  6. How long is the trachea in birds compared to animals?
    longer in mammals
  7. How many airsacs are in birds?
  8. What part of the bird contains B cells, is dorsal to cloaca, and aids in immunity?
    bursa of fabricius
  9. What part of the bird contains T cells, has multiple lobes along neck, and contributes to immunity
  10. What is the site of fertilization in the female?
  11. What measures day length and LH and FSH is stimulated in both males and females stimulating to lay?
    extraretinal photoreceptor in hypothalamus
  12. What birds are stimulated by decreasing day length? 2
    • Emu
    • Emperor Penguins
  13. What percent of sperm enter storage glands at the junction of vagina and uterus?
  14. How much must the egg dehydrate so that the chick can rotate to pip and hatch?
  15. What Dz=> conjunctivitis, tracheitis, air sacculitis, secondary coliform respiratory infections, egg quality abnormalities?
    paramyxovirus type 1
  16. C/S of Newcastle Disease: 3
    • Inflammation of respiratory airway
    • Pneumonia
    • Airsacculitis
  17. C/S of viscerotropic form of Newcastle Dz 3
    • Soft/Lymphoid Tissue Hemorrhage
    • GIT Necrosis
    • Vasculitis
  18. How is Newcastle disease diagnosed?
    • Real-time PCR
    • Virus isolation
    • Pathotyping by inoculation of susceptible chicken
    • Paired serology
  19. Is Newcastle disease a reportable disease?
  20. What is the natural reservoir of avian influenza?
  21. High VS Low Path Avian Influenza:
    • High replicated in the absence of trypsin
    • (Not limited to GI & Respiratory)
  22. How is avian influenza spread?
  23. C/S of low path avian influenza? 8
    • Dehydration
    • Respiratory exudates
    • Hyperemia
    • Diarrhea
    • Decreased egg production
    • Yolk peritonitis
    • Swollen kidney
    • Gout
  24. Where does vasculitis occur in highly pathogenic avian influenza?
    Vasculitis/Infarction of the comb, wattles, and legs
  25. What are the clinical signs of high path avian influenza? 6
    • Sudden onset high mortality
    • Depression
    • Neurologic
    • Vasculitis
    • Respiratory exudates
    • Reproductive tract regression
  26. How do you diagnosis avian influenza? (Sample & Tests)
    • Pharyngeal/Cloacal swabs
    • Virus isolation
    • Serology (ELISA, agar gel immunodiffusion, hemagglutination inhibition test)
  27. What type of birds do avian influenza focus on?
  28. How is avian influenza completely eradicated?
  29. What is an acute upper respiratory disease of chickens with the potential for renal and reproductive manifestations?
    • Infectious Bronchitis
    • =Coronavirus
  30. What is the most important protein in infectious bronchitis immunity?
  31. How is infectious bronchitis transmitted?
  32. C/S of infectious bronchitis? 5
    • c/s
    • Rales
    • Nasal/Ocular discharge
    • Decine in egg Production/Quality
    • Nephropathogenicity (-> death)
  33. What are lesions of infectious bronchitis? 5
    • Catarrhal inflammation of upper respiratory tract
    • Swollen kidneys and uroliths
    • Yolk peritonitis
    • Misshapen eggs
    • Hypoplastic oviduct in pullets exposed early
  34. Dx for infectious bronchitis? (sample/test)
    • Trachea
    • Kidney
    • Cecal tonsil
    • virus isolation in SPF embryos
  35. DDx for infectious bronchitis?
    • Newcastle
    • Influenza