Flashcards in Quiz 2 Ruminants Resp and Gastro Deck (37):
Genus and Family for Parainfluenza 3 infection?
How does Parainfluenza 3 look like under the microscope?
Syncytiums and Intracytoplasmatic inclusion bodies
What are some causes of Shipping Fever?
Parainfluenza 3 Infection
Bovine Respiratory Syncytial Disease
C/S of Parainfluenza 3?
Serous nasal discharge
Dx of Parainfluenza?
its difficult bc its asymptomatic or very mild symptoms
of nasal discharges
How is Parainfluenza transmitted?
Aerosals and fomites contaminated with nasal discharges
Vacc for Parainfluenza?
Several attenuated vacc for intranasal
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
Bovine Respiratory Syncytial Dz
What is the morb and mort for Syncytial dz?
What dz can seroconversion is short lived, and reinfection can occur?
Bovine Resp Syncytial Dz
Dx of Syncytial Dz
IF from lung lavage or necropsy, serology on paired samples are difficult to interpret.
How can you control Syncytial Dz?
new mucosal vacc
More common in winter, spreads rapidly by aerosals, probably existence of carriers.
Bovine Herpesvirus 1
Generalized dz in calves and possilby Encephalitis.
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
If a cow is presenting with Fetid breath, dypsnea, mouth breaking, salivation, and a deep bronchial cough?
When does abortion occur in IBR
can occur at 4-7 mo gestation
Lesions on aborted fetuses look like?
No gross lesions
Microscopically necrotic foci mainly on the liver
Dx of IBR?
Control of IBR?
Major importance in feedlots.
Think about shipping fever--stressful situations
try to keep everyone stress free
IBR, does it have vacc?
Yes! Do not prevent infection, but reduce incidence and severity of dz
Grp A _____ from the Reoviridae
Genome of Rotavirus
White scours/Milk Scours?
When can calves become infected with rotavirus?
First couple of weeks post birth
CS of rotavirus
Moderately depressed but will continue to eat
Feces are voluminous, soft to liquid and often contain large amounts of mucus
Whats important to remember about young if they get rotavirus?
They can die from dehydration but most will recover in 3-4 days
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
Dx of Rotavirus?
Definite with EM, ELISA, RT-PCR
Excreted in feces a high numbers and resistant in the environment
You want local immunity in the SI
Vacc for rotavirus?
Vacc mother with inactivated virus vacc promotes higher levels of maternal Ab in colostrum and milk
Coronavirus or Rotavirus can cause diarrhea in humans?
When can dz of calves been seen with Corona?
1 wk old when the maternal Ab begin to wane off