Swine

Question 1

Pseudorabies

Answer 1

Herpes virus reportable Aujeszky’s disease
- Inhalation transmission
- Young animals - CNS - anorexia, tremors, incoordination, blindness
- Weaned - CNS + Resp - coughing, dyspnea
- Grower/finisher - Resp - coughing sneezing, nasal discharge
- Older - reproductive failure
- Cowdry type A inclusion bodies*
- no treatment; biosecurity

Question 2

Swine Influenza

Answer 2

Influenza Type A virus
- Respiratory - coughing, pyrexia, sneezing, nasal discharge
- Necrotizing bronchitis
- tx: prevent secondary bacterial infection

Question 3

Transmissible Gastroenteritis

Answer 3

Corona Virus
- 100% mortality in piglets <10 days
- D+ and V+

Question 4

Porcine Parvo

Answer 4

World wide cause of fetal death with no signs in Sow
- still births and mummified
- vaccination

Question 5

Classical Swine Fever

Answer 5

Pestivirus hog cholera reportable
- Closely related to boarder disease (sheep) and bovine viral diarrhea
- Oral ulcers
- coughing, discolouration of skin,
- Paresis/paralysis
- Constipation –> D+
- Abortions/stillbirths
- Convulsion tremors in newborn
- Hind limb weakness
- Fluorescent antibody

Question 6

Porcine proliferative enteritis

Answer 6

Lawsonia intracellularis
- Acute hemorrhagic diarrhea - pasty brownish/black
- Severely thickened and inflamed ilium - Fibronecrotic casts
- tetracycline

Question 7

Streptococcus suis

Answer 7

Zoonotic
- Meningitis - lameness, paralysis, paddling, shaking and convulsions
- reddening of skin
- Pyrexia, depression, wt loss
- Blindness; deafness

Question 8

Actinobacillus pleuropneumoniae

Answer 8

• Young animals < 6mo
• Vasculitis and hemolysis at lungs; blood tinged fluid from nostrils
• Acute death
• Fibronecrotic and hemorrhagic lung lesions
• Enrofloxacin

Question 9

Glassers disease

Answer 9

Haemophilus parasuis
- Polyarthritis, polyserositis
- pyrexia, pneumonia
- convulsions, sudden death
- Fibropurulent inflammation, meningitis
- ceftifur

Question 10

Mycoplasma species (x 4)

Answer 10

M. hyorhinis (young) - arthritis
M. hyosynoviae (old) - arthritis
M. suis - anemia
M. hyopneumoiae - pneumonmia

Question 11

Ascaris Suum

Answer 11

roundworm
- 2-3 month old
- intestinal obstructions w/ heavy load
- fibrotic liver lesions (white spots) - icterus, unthriftiness
- verminous pneumonia - dyspnea, thumps (abdominal breathing)
- tx: ivermectin, fenbendazole, pyrantel

Question 12

Oesophagostonum

Answer 12

Strongyle
- intussusception - V+, no stool
- Tachycardia, restlessness
- Colic

Question 13

Stephanurus dentatus

Answer 13

Kidney worm
- posterior ataxia/paralysis
- slow growth
- Parasites near or in kidney - ova found in urine

Question 14

Trichinella spiralis

Answer 14

Nematode Zoonotic
- Larvae encysts in muscle
- can infect all species - humans from eating uncooked meat

Question 15

Strongyloides ransomi

Answer 15

Threadworm
- anemia, D+, emaciation, death
- fecal float test
- Benzimidazole or ivermectin

Question 16

Greasy Pig disease
Exudative Epidermitis

Answer 16

Staphylococcus hyicus
- Requires abrasion or injury to be introduced into the system
- Young pigs (5 - 60 days)
- Depression, anorexia,
- Thickened and red spotted skin
- Macules around eyes, lips, nose, and ears –> pustules
- Exudation of serum –> crusted exudates
- Erosions of the coronary band and heel
- Penicillin and cephalosporins

Question 17

Clostridium perfringens Type A and C

Answer 17

• 1-7 day old
• small intestinal hemorrhage - watery yellow/red D+
• healthiest piglets affected first
• vaccination of sows prior to birth

Question 18

Clostridium difficile

Answer 18

• 1 - 2 day old
• pasty yellow watery D+
• antibiotic treatment at birth

Question 19

E. coli

Answer 19

• 1 - 14 day old
• yellow D+ (gas and fetid odor)
• tail necrosis

Question 20

Rotavirus

Answer 20

• 1-5 weeks
• Gray, pasty feces with poorly digested food

Question 21

Corona virus

Answer 21

Transmissible gastroenteritis
- All ages
- Vomiting
- D+ w/ undigested milk
- Biosecurity preventative

Question 22

Intestinal coccidiosis

Answer 22

Isospora suis
- 5-15 day old
- fetid yellow to white D+
- Sheep pellet feces
- occysts in faeces
- Sulfamethazine or paonazoril

Question 23

Swine dysentery

Answer 23

Brachyspira hyodysenteriae
- Older pigs (> 25kg)
- mucoid large bowel D+ w/ blood
- Gray mucous layer or yellow necrotic debris in large intestines

Question 24

Trichuris suis

Answer 24

Whipworm
- 3 months and up
- Found in cecum and large intestines
- hemorrhagic diarrhea
- double operculated eggs
- Levamisole

Question 25

Salmonella

Answer 25

All ages
- fever, yellow D+ (necrotic debris)
- rectal strictures

Question 26

African Swine Fever

Answer 26

Reportable
Asfivirus
- oronasal vs ingestion of contaminated meat
- Pyrexia, lethargy, weakness
- Blue blotching of skin
- Ocular and nasal discharge
- V+; D+
- Abortion
- Death