Quiz 2 Ruminants Resp and Gastro Flashcards Preview

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Flashcards in Quiz 2 Ruminants Resp and Gastro Deck (37):
1

Genus and Family for Parainfluenza 3 infection?

Respirovirus

Paramyxoviridae

2

How does Parainfluenza 3 look like under the microscope?

Syncytiums and Intracytoplasmatic inclusion bodies

3

What are some causes of Shipping Fever?

Parainfluenza 3 Infection

Bovine Respiratory Syncytial Disease

IBR

Adenovirus

4

C/S of Parainfluenza 3?

Fever
Lacrimation
Serous nasal discharge
Depression
Dyspnea
Coughing

Shipping fever

5

Dx of Parainfluenza?

its difficult bc its asymptomatic or very mild symptoms

IF
ELISA
of nasal discharges

6

How is Parainfluenza transmitted?

Aerosals and fomites contaminated with nasal discharges

7

Vacc for Parainfluenza?

Several attenuated vacc for intranasal

8

Whend should you give the vacc for Parainfluenza?

If you planning for transport, give a few days before so they have enough time to produce an immune response

9

Pneumovirus
Paramyxoviridae

Bovine Respiratory Syncytial Dz

10

What is the morb and mort for Syncytial dz?

High morbidity

Low mortality

11

What dz can seroconversion is short lived, and reinfection can occur?

Bovine Resp Syncytial Dz

12

Dx of Syncytial Dz

Difficult

IF from lung lavage or necropsy, serology on paired samples are difficult to interpret.

13

How can you control Syncytial Dz?

new mucosal vacc

More common in winter, spreads rapidly by aerosals, probably existence of carriers.

14

Bovine Herpesvirus 1
Herpesviridae

IBR

15

IBR C/S

Rhinotracheitis
Pustular Vaginitis
Balanopothitis
Conjunctivitis
Abortion
Enteritis
Generalized dz in calves and possilby Encephalitis.

16

What its important to remember about that long list of C/S for IBR

These c/s rarely present in the same herd at the same time

17

If a cow is presenting with Fetid breath, dypsnea, mouth breaking, salivation, and a deep bronchial cough?

IBR

18

When does abortion occur in IBR

can occur at 4-7 mo gestation

RARE though

19

Lesions on aborted fetuses look like?

No gross lesions

Microscopically necrotic foci mainly on the liver

20

Dx of IBR?

EM

IF

PCR

21

Control of IBR?

Major importance in feedlots.

Think about shipping fever--stressful situations

try to keep everyone stress free

22

IBR, does it have vacc?

Yes! Do not prevent infection, but reduce incidence and severity of dz

DIVA

23

Grp A _____ from the Reoviridae

Rotavirus

24

Genome of Rotavirus

RNA, Segmented,
Naked

Reassortment occurs

25

White scours/Milk Scours?

Rotavirus gastroenteritis

26

Transmission ofRotavirus?

Fecal Oral

27

When can calves become infected with rotavirus?

First couple of weeks post birth

28

CS of rotavirus

Moderately depressed but will continue to eat

Feces are voluminous, soft to liquid and often contain large amounts of mucus

29

Whats important to remember about young if they get rotavirus?

They can die from dehydration but most will recover in 3-4 days

30

What part of the villi does rotavirus effect?

Top of the villi-they become shortened with cuboidal cells which will secrete less lactase and are less able to carry out glucose couple sodium transport

The undigestd lactose in milk cause bacterial overgrowth and has osmotic effect both contributing to further diarrhea

31

Dx of Rotavirus?

Clinical Presentation
Definite with EM, ELISA, RT-PCR

32

Controlling Rotavirus

Excreted in feces a high numbers and resistant in the environment

You want local immunity in the SI

33

Vacc for rotavirus?

Vacc mother with inactivated virus vacc promotes higher levels of maternal Ab in colostrum and milk

34

Winter dysentery?

Coronavirus

35

Coronavirus or Rotavirus can cause diarrhea in humans?

Corona

36

When can dz of calves been seen with Corona?

1 wk old when the maternal Ab begin to wane off

37

When do you vacc for corona?

Vacc dam to provide high levels of maternal Ab in colostrum or use colostrum from donors that are hyperimmunized