clostridial disease and poisoning in cattle Flashcards

1
Q

what would be known as a peracute condition of sudden death

A

suddenly found dead with no preceding signs

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2
Q

what would you do first in cases of sudden death in cattle where there are no obvious causes

A

anthrax investigation - contact APHA if clinical signs are suggestive or no other cause can be identified
collect blood from marginal ear vein

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3
Q

what would a positive stain for anthrax look like

A

blue bacteria with pink capsules

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4
Q

what conditions are associated with clostridial myositis

A

blackleg and malignant oedema

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5
Q

what bacteria causes blackleg

A

clostridum chaevoei

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6
Q

what age group of cattle are most affected by blackleg and what are the typical signs

A

6-24 months
sudden death, lameness and swelling of the proximal limb and emphysematoua and respiratory distress if the tongue swells
animals have a good body condition score

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7
Q

when would you vaccinate animals against blackleg

A

4 month before turnout

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8
Q

how is a cow infected with malignant oedema

A

wound associated - enters through puncture wounds which can be post-surgery or TB testing

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9
Q

what differential diagnosis for sudden death in cattle include

A

anthrax, yew or lead intoxication, hypomagnesium, mastitis

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10
Q

where is the reservoir for clostridium tetoni

A

in the soil

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11
Q

what is the incubation period for clostridium tetoni

A

4 months

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12
Q

what are the clinical signs associated with tetanus

A

stiffness of limbs and jaw and elavated tailhead, 3rd eye prolapse and salivation

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13
Q

what are differentials for tetanus in cattle

A

hypomagnesaemia, CCN lesions, lead poisoning (usually go blind)

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14
Q

what is the common source of clostridum botulinum

A

chicken waste

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15
Q

what are the clinical signs of botulism

A

lingual paralysis, dysphagia, ataxia, muscle weakness and recumbency, constipation and death

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16
Q

what are differentials for botulism

A

hypocalcaemia, listeria, blackleg, mastitis or nitrae poisoning

17
Q

how would you prevent clostridum botulinum

A

checking poultry litter for carcasses before spreading it

18
Q

what bacteria are associated with clostridial dysentry and where are they found

A

clostridium pperfringens and welchii GI gut commensals that live in the soil

19
Q

what causes the activation of clostridum novyi

A

liver damage from liver fluke - common in wet waterlogged pasture