rbe doc esther

incubation period of PRRS

7-14 days

CA of PRRS which family does it belong

Arteriviridae

NOT a typical sign of PRRS

severe diarrhea

Footrot CA

Fusobacterium necrophorum

tropism for mutation of PRCV shift in

intestinal —> respiratory

histological lesion in PRCV

interstital pneumonia with lymphocytic inflitration

pathogenic strain of porcine circovirus

PCV2

A grower pig shows RED to PURPLE skin lesions on hind limbs and abdomen. necropsy reveals enlrged kidney with pettechial hemorrhage what form of PCV2

PDNS

Combination typical in PRRS

Low ADG high FCR

most effective method to control PCV

vaccination

formaldehyde and copper function in footrot

improve bacterial load

why anaerobic bacteria is successful in necrotic hoof tissue

lowers O2 favorable for anaerobes

PRRS reproductive most common finding

mummified fetus, stillbirth and weak piglets

age grp commonly affected by PMWS

post weaning piglets

substance for whitewashing

calcium hydroxide- lime

ubiquitous and domestic and feral swine appear to be natural host. non suidae species are SUSCEPTIBLE to this infection

PCV2

Boar in a breeding farm develops fever leathargy decreased libido poor quality sem3n

PRRS

Topical antiseptic for footrot

gentian violet

color of sjin lesion in PDNS

All of the above

color of pinpoint cortical lesions of kidney in PDNS

White

concentration of formalin in footbath

5%

footrot develops primarily due to

direct bacterial invasion following skin injury

What is the primary effect of talcum powder when applied to the hoof of a pig?

dries moisture in area

PRRS Caused by

RNA virus from the Arteriviridae family

Which of the following is MOST characteristic of

PRRS in breeding herds?

Abortion in late gestation

In grower-finisher pigs, PRRS most commonly

presents as:

Interstitial pneumonia

The most sensitive test for detecting active PRRS

infection is:

PCR

The primary target cells of PRCV are:

Alveolar epithelial cells and macrophages

The most common route of PRCV transmission is:

Aerosol and direct contact

PRCV must be differentiated from which closely

related enteric coronavirus?

Transmissible gastroenteritis virus (TGEV)

PRCV infection is generally:

Mild to moderate respiratory disease

Porcine circovirus type 2 is best described as:

 Non-enveloped single-stranded DNA virus

Which is the MOST effective method to control PCV

vaccination

What is feedback in swine production?

Controlled exposure to infectious material

Which antibody is most important in feedback

protection?

IgA

The disease caused by Brachyspira hyodysenteriae is:

Swine Dysentery

Which virus causes pseudorabies?

Porcine herpesvirus-1

Pseudorabies is also known as:

Aujeszky’s disease

Rotavirus mainly damages which part of the intestine?

Villi

The causative agent of TGE belongs to which family?

Coronavirus

Rotavirus Serogroup that causes diarrhea in suckling

pigs under 1 week of age.

Serogroup C

Swine dysentery is mainly caused by

Brachyspira hyodysenteriae

Brachyspira infections are commonly associated with:

Mucosal invasion of the large intestine resulting in mucohemorrhagic colitis

What is the result of villous damage?

Malabsorption

Rotavirus primarily targets which intestinal structure in neonatal pigs?

Mature enterocytes at the tips of villi leading to villous atrophy

A hallmark clinical sign of pseudorabies in piglets is:

Intense pruritus (“mad itch”) with self-mutilation

Compared to TGE, PED typically shows:

Similar lesions but often higher mortality in suckling pigs

The diarrhea in swine dysentery is best described as:

Mucohemorrhagic with fibrin and mucus