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Finals Farm > Cattle Abortion: Virus > Flashcards

Cattle Abortion: Virus Flashcards

1
Q

BVD: transmission

A

Depends on stage of pregnancy to severity
Nose to mouth contact
Other infected cattle or PI calves

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2
Q

BVD: diagnosis

A

Detection of antibodies in bulk milk, detection of antigen or virus in tissue

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3
Q

BVD: abortion rate

A

Usually low

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4
Q

BVD: time of abortion

A

From 2 months

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5
Q

BVD: placental findings

A

No specific gross lesions

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6
Q

BVD: fetal findings

A

Embryonic/ fetal death
Mummification
Congenital abnormalities of the CNS or eyes (cerebellar hypoplasia, mucosal disease in PI)?

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7
Q

BHV-1: transmission

A

Associated with previous or intercurrent respiratory disease in the herd

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8
Q

BHV-1: abortion rate

A

Sporadic
Up to 60%

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9
Q

BHV-1: time of abortion

A

4 months to term

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10
Q

BHV-1: placental findings

A

No specific gross lesions

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11
Q

BHV-1: fetal findings

A

May be hepatic necrosis

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12
Q

Schmallenberg: transmission

A

Culicoides

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13
Q

Schmallenberg: clinical signs

A

Mild disease
Milk drip
Pyrexia
Diarrhoea
Abortion or birth defects

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14
Q

Schmallenberg: diagnosis

A

Tissues sample from fetus or placenta

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15
Q

Schmallenberg: prevention

A

Vaccination of calves

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16
Q

Schmallenberg: placental findings

A

No lesions

17
Q

Schmallenberg: fetal findings

A

Birth defects
Stiff limbs
Fused/twisted joints
Hydrocephaly - brain damaged, undershot jaw

18
Q

Blue tongue: transmission

A

Insect borne

19
Q

Blue tongue: clinical signs

A

Reduced reproductive performance
Milk drop
Fever
Nasal discharge
Swelling of head and neck
Conjunctivitis
Ulceration of mouth
Swelling of teats
Abortion

20
Q

Blue tongue: diagnosis

A

Virus detection PCR

21
Q

Blue tongue: prevention

A

Vaccination

22
Q

Blue tongue: placenta findings

A

No lesions

23
Q

Blue tongue: fetal findings

A

Hydrocephaly or malformed

Finals Farm (5 decks)

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