infectious bovine rhinotracheitis
TRANSCRIPT
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Cause * bovine herps virus
-it is highly infectious disease of cattle & buffaloes*ch` clinically by:
- rhinotracheitis -conjunctivitis- fever -encephalitis -abortion
***highly fatal in calves less than 2 weeks of age
Clinical signs: 1-respiratory form:
● fever (40-42 c) , shallow rapid respiration ● persistant cough & dyspnoea
● serous to mucopurulent nasal discharge● hyperemia & hemorrhagic focal necrosis of nasal mucosa
(red nose)ْ
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2-occular form:● bilateral conjunctivitis ( congestion & swelling )
● keratoconjunctivitis – corneal opacity (at corneo- sclearal junction)
● serous to mucopurulent occular discharge 3-enteric form (in newly born calves) ● fever , anorexia , dullness...............etc
● erosion & ulceration of oral cavity ● diarrhea
4 -abortion in 5-9 month of pregnancy5 -encephalitis ( in calves less than 6 month of age) → in
co-ordination , excitment , bellowing , convulsion & blindness
6-infectious valvo-vaginitis (IPV) 7 -infectious pustular balanopothitis(IPB)
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Treatment Broad spectrum antibiotic & symptomatic
treatment for the respiratory signsVaccination
a-modified live attinuated vaccine: -contraindicated in pregnant animal ( cause abortion )
- given by I/M injection - given to calves at 6 m` of age
b-killed vaccine: -avilable in combination with PI3 , B.V.D & resp.synctial virus
- given to calves → I/M → 2 dose ( 5 ml in each dose) → 2 weeks interval