Infectious

Question 1

Abscess

Answer 1

A.bovis

Spinal lesion from tail docking, rumen lesions, local enlargement, grey green pus at lymph nodes

Lance, burn, AB, vacc, dipping

Question 2

Foot rot

Answer 2

D.nodosus

Wet/muddy conditions worm penetrate skin through wounds, esp O2 free envs

Red skin. Moist foul smelling, yellow-grey pus, inflam=lame= hoof becomes deformed

Isolate, Zn-sulphate footbath, AB, vacc, Zn sulphate licks

Question 3

Facial and foot abcesses

Answer 3

Facial- consume soil or thorny vegetation

• Abcesses lymph nodes, sticky smelly, eating painful production decreases
• Lance and drain, sodium iodine inj, 7-10d streptomycine

Foot- S.aureus! Bushes/rocks injure feet

• Swollen hot feet, yellow pus, crippled
• Tetracycline and Zn-sulphate solution, formalin footbath, drain if bad

Question 3

Epididymitis

Answer 3

B.ovis

Inflam of eyes mouth nose sheath penis and rectum, transmitted sexually

Swollen hot red scrotum, lumpy/shrunk testes, ours and bacteria are released in the semen

Remove inf testes, cull, AB, rev 1 vacc, water to activate microbes

Question 4

Infectious keratoconjunctivitis

“Pink eye”

Answer 4

M.ovis- via contact and insects

Keratitis, sore eye, ruptured cornea

AB 3x/d, eye patch, vacc

Question 5

Enterotoxemia

“Pulpy kidney”

Answer 5

Clostridium perf type B

Sudden improved diet, over eat, sudden deaths overnight, disturbs dig and poisons the blood

Pm- Fluid around the heart, empty gas filled rumen

Rescue carb intake, small frequent meals, inoculate, dose “flowers of sulphur”, inj tetracycline, vacc 1-2m before parturition

Question 6

Botulism

Answer 6

C.botulinum

Clostridium spores in soil are ingested, develop in dead animal, bact prod toxins and contam feed/water, sheep eat carcass bones

Lags behind flock, head hangs to one side, tail wiggles, drools as tongue becomes paralyzed, suffocate to death

Anti serum, vacc, supplements/food/water

Question 7

Tetanus

Answer 7

C.tetani

Enter wounds, anaerobic conditions (manure)

Exaggerated reflexes, white membr covers eye, eyes wide open, foam at mouth, convulse, rigidity sets in, suffocates to death

AB, vacc, keep quiet and dark, humanely destroyed
Elastrators within 1st 2wks after birth

Question 8

Black Quarter
Quarter evil
Gas gangrene
(No pm!)

Answer 8

C.septicum

I’ll a few days after shearing, swollen wound, purple discharge, crunchy-feeling lumps

Disinfect equip, clean clothes, vacc all horned Rams at puberty, penicillin, incinerate dead.
Kill infected and vacc others!!!

Question 9

Lamb dysentery

Answer 9

C.perfringens (live naturally in GIT)

1-7d sudden deaths, bloody diarrhea

AB

Question 10

Pasteurellosis

“Bontlong”

Answer 10

M/o inhaled in dusty air or travels via teat canal

pneumonia, red patched lungs, leathery looking, adhere to the rib cage (90% carriers)

Biannual vacc

Question 11

Mastitis

Answer 11

Pasteurella/staphylococcus/corynebacterium

Swollen udder, no milk, udder hardens.
Abcesses of udder = corynebacterium. Don’t graze or allow lamb to suckle, untreated - can lose whole udder

Vacc 4-5wks

Question 12

Lumpy wool disease

Answer 12

D.congolensens - Spread by direct contact

Fungus like dermatitis, high rainfall areas especially. Bact thrive in damp wool, hardens, can fall off. Skin cracks and bleeds, wool hardens, fleece becomes matted

Shear and disinfect, tetracycline, Zn sulphate powder down back, or in a dip. No vacc :(

Question 13

Salmonella

Answer 13

S.enterica

Ingest contaminated food (chicken/bone meal), milk replacers

Diarrhea, abortions, septicemia

Cull calf, AB

Question 14

Fleece rot

Answer 14

P.auruginosa

Wet conditions, omnipresent

green or purple discoloration of wool

Question 15

Pizzle disease

Answer 15

M. Mycoides, sexually T/M

Ewe: Red vuvla with pus
Ram: bleeds from sheath, sores on penis, pus from 2* inf, penis cannot retract

Aerosol AB and long acting AB, repeated for ewes after 5days, don’t bring inf animals onto farm