Farm General Bacterial Diseases In Pigs

Front 1

Name some of the main general bacterial conditions in pigs.

Back 1

Glasser's Disease
Erysipelas
Mycoplasmal disease
Strep suis
Staph hyicus (Greasy Pig)

Front 2

What is the main strep infection that pigs get?

Back 2

Strep suis

Front 3

What is the serovar of S. suis that is most common and what sign does it cause?

Back 3

Serotype 2 - meningitis

Front 4

What do other serotypes of S. suis cause?

Back 4

Joint ill, septicaemia, polyserositis

Front 5

Transmission of S. suis?

Back 5

Aerosol
DC

Front 6

Pathogenesis of S. suis?

Back 6

Colonise tonsils and gain access to the circ, causing a bacteraemia or septicaemia. Can localise in target tissues.

Front 7

How old are the pigs that get S. suis infections?

Back 7

Usually really young - sucklers and weaners

Front 8

S. suis zoonotic?

Back 8

Yes

Front 9

C/S of S. suis infection?

Back 9

Joint-ill; febrile, lame pigs. If septicaemia occurs, some pigs may be found death. If meningitis occurs, piglets are recumbent, have paddling, stiff legs and usually die.

Front 10

Diag of S. suis?

Back 10

C/S, PM findings of a distended, cloudy joint capsule or congested meninges and also a bacterial culture

Front 11

Tx of S. suis infection?

Back 11

Weaners tx with penicillin in water/feed; piglets will need an AB by injection

Front 12

Vaccine for S. suis?

Back 12

No

Front 13

What causes Greasy Pig disease?

Back 13

Staph hyicus

Front 14

Pathogenesis of greasy pig disease?

Back 14

Infection occurs though DC and is predisposed by mange or trauma to the skin caused by rough bedding or sharp objects. Bacteria multiply in the epidermis, causing inflammation, fibrin exudation and increased sebaceous glands.

Front 15

How old are the pigs that usually get greasy pig disease?

Back 15

2-6 weeks; sometimes seen in older pigs

Front 16

How does humidity affect staph hyicus?

Back 16

High humidity promotes colonisiing of the skin

Front 17

C/S of greasy pig disease

Back 17

Skin congestion and rapidly-spreading multifocal areas of scab formation. Can have severe pain, causing anorexia and weakness. They are NOT pruritic. Older pigs show signs of small multifocal scabs (looks like pig pox)

Front 18

Ddx for greasy pig disease?

Back 18

Mange
Parakeratosis

Front 19

Tx of greasy pig disease?

Back 19

AB injection and AB creams applied to the skin. AF may help alleviate the severity of lesions. Tx large groups in feed/water

Front 20

Vaccine for greasy pig disease?

Back 20

No

Front 21

What agent causes Glasser's Disease?

Back 21

Haemophilus parasuis

Front 22

Who gets glassers disease?

Back 22

Weaner and grower pigs between 1-3 months (although there are many months of after-effects)

Front 23

Transmission of H. parasuis?

Back 23

Aerosol
DC
Carrier pigs

Front 24

How many serovars of H. parasuis are there?

Back 24

14 or more

Front 25

C/S of glassers disease?

Back 25

Febrile, anorexic pigs
Pneumonia signs
Lameness/Stiffness
Blotchy skin discolouration

Front 26

Pathogenesis of H. parasuis?

Back 26

Septicaemia leading to polyserositis, pneumonia and meningitis

Front 27

PM of pig with glassers?

Back 27

Acute disease will show fibrinous polyserositis, pericarditis and polyarthritis.
Chronic disease shows fibrous adhesions in the body - even adhesion of pericardium and epicardium; can see chronic arthritis.

Front 28

Diag of glassers disease?

Back 28

C/S, lesions and isolation of H. parasuis from joints or lung

Front 29

Tx of glassers disease?

Back 29

Bc usually an outbreak, tx in water or food AB.

Front 30

Vaccine for glassers disease?

Back 30

Yes, give to piglets to prevent/control infections. Also contains M. hyopneumoniae (EP)

Front 31

What agent causes swine erysipelas?

Back 31

Erysipelothrix rhusiopathiae

Front 32

Pathogenesis of erysipelas?

Back 32

Enters through gut, skin or tonsils. Pigs dvp septicaemia and diamond-shaped skin haemorrhages; sometimes there is a chronic syndrome with polyarthritis and vegetative endocarditits

Front 33

Transmission of erysipelas?

Back 33

Carried in tonsils of pigs and shed in faeces and urine; wildlife vectors play a role as well

Front 34

Erysipelas zoonotic?

Back 34

Yes, causes granulomatous swellings on fingers/hands

Front 35

Immunity with erysipelas?

Back 35

Pigs that recover dvp it

Front 36

How old are pigs that usually get erysipelas?

Back 36

2 months old - adult

Front 37

C/S of erysipelas?

Back 37

Febrile
Anorexia
Diamond-shaped lesions after 1-2 days of fever onset
In chronic form, skin lesions become black and necrotic and slough.
In the acute form, can have a septicaemic death.
Polyarthritis in joints
Valvular endocarditis

Front 38

Diag of erysipelas?

Back 38

C/S and lesions
Isolation of org from heart, spleen or joints
Serology available

Front 39

Tx of erysipelas?

Back 39

Penicillin
Thorough cleaning and disinfection of buildings

Front 40

Vaccine for erysipelas?

Back 40

Yes for the breeding stock, q 6 months

Front 41

What does infection with Mycoplasma hyosynoviae cause?

Back 41

Arthritis

Front 42

What age groups gets affected by M. hyosynoviae?

Back 42

Growers and finishers

Front 43

Pathogenesis of M. hyosynoviae?

Back 43

Oro-nasal route; carried in tonsils of many pigs. Septicaemia followed by localisation in joints, causing synovitis.

Front 44

C/S of M. hyosynoviae infection?

Back 44

Lameness in one or more limbs; swollen joint capsules

Front 45

Diag of M. hyosynoviae infection?

Back 45

C/S, isolation of M. hyo from joint fluid (will be cloudy and fibrinous); NO serological test

Front 46

Ddx M. hyosynoviae infection?

Back 46

Erysipelas
DJD

Front 47

Tx of M. hyo infection

Back 47

AB (any - Linco, Chlortet, Enro) by injection