adult sheep resp + eye dz

Common resp CS

WL, cough, nasal dis, dyspnoea, sudden death

Common resp diseases

Chronic suppurative pneumonia

Maedi visna

Ovine pul adenomatosis

Laryngeal chondritis

Mannheimia haemolytica

Ovine pul adenomatosis/ jaagsiekte - cause

Jaagsiekte sheep retrovirus

Ovine pul adenomatosis/ jaagsiekte - Cancer type

Pul carcinoma

Ovine pul adenomatosis/ jaagsiekte - Spread

Lung fluids, aerosols, colostrum, milk

Ovine pul adenomatosis/ jaagsiekte - Incubation length long so inf sheep age what

2-4yrs

Ovine pul adenomatosis/ jaagsiekte - CS

Sudden death, WL, inc resp effort, exercise intolerance, panting

Ovine pul adenomatosis/ jaagsiekte - Dx

CS, auscultation, US, wheelbarrow test, PM

Ovine pul adenomatosis/ jaagsiekte - Tx

None - cull

Ovine pul adenomatosis/ jaagsiekte - Prevention based on flock type

clean - Biosecurity, double fencing

Inf - cull, dont keep offspring, disinfection, avoid close contact, avoid troughs

Maedi visna - cause

Lenti virus

Maedi visna - Effects

Chronic infl lesions (lungs, mastitis, neuro, joints)

Maedi visna - Spread (young inf)

Milk, colostrum, lung discharges

Maedi visna - When are CS usually seen

>2yrs

Maedi visna - CS

Resp - WL, inc resp effort, exercise intolerance

Neuro - WL, abnormal gait, ataxia, uncoordination, paralysis, circling, head tremor

Chronic mastitis

Maedi visna - seoncdary inf

Mannheimia haemolytica

Maedi visna - Dx

PM

Serology ELISA

Maedi visna - Prevention

Test + cull

Outdoors, dec stocking rates

Biosecurity

Maedi visna - Tx

Cull

Chronic suppurative pneumonia - gross

Lung abscess

Chronic suppurative pneumonia - Casue

Trueperella pyogenes

Pasteurella

Chronic suppurative pneumonia - CS

WL, inc resp effort, cough, nasal dis, fever

Chronic suppurative pneumonia - Dx

US, PM

Chronic suppurative pneumonia - Tx

Cull

Laryngeal chondritis - common name

Texel throat

Laryngeal chondritis - Breeds + why

Beltex, texel

Common in rams

Shorter larynx, narrow vocal cords, narrow trachea

Laryngeal chondritis - Gross

Swollen narrow larynx from nodules + abscesses

Laryngeal chondritis - Cause of death

Suffocation

Laryngeal chondritis - CS

Loud insp dyspnoea

Laryngeal chondritis - Tx

Corticosteroids

Broad long AB (penicillin)

Temp tracheostomy

Laryngeal chondritis - Control

Breeding + genetics

Ovine inf keratoconjunctivitis (pink eye) - cause

Mycoplasma conjunctivae

Mixing - tupping/feeding

Carriers

Ovine inf keratoconjunctivitis (pink eye) - tx

Isolate

Oxytetracycline, macrolides

Topical AB/ antiseptics

Treat groups

Ant uveitis (silage eye) - cause

Listeria monocytogenes

Silage feeding

Ant uveitis (silage eye) - CS

Blepharospasm, cloudy cornea, swollen folded iris, material in eye

Ant uveitis (silage eye) - Tx

Sub conjuctivial Oxytetracycline + dexamethasone

Systemic penicillin, oxytetracycline

Remove source

Ddx of thin ewes

Poor nutrition

Teeth /oral lesions

Chronic dz - ovine pul adenomatosis, Maedi visna, chronic supp pneumonia, caseous lymphadenitis, Johnes, PGE, fluke, pharyngeal lesions, lame