Lameness Flashcards
1
Q
Neonates (3)
A
- Foot lesions
- Splay leg
- Crushing
2
Q
Foot lesions in nenonates (6)
A
- Born with cartilaginous ‘slippers’
- Farrowing pen floors hard
- Bruising of soles within 24 hours
- Peaks at 6-8 days
- Gone by 14 days
- Damage to accessory digits
3
Q
Sucking Pigs (6)
A
- Foot lesions
- Knee erosion
- Joint ill
- Trauma
- Tenosynovitis
- New flooring often causes more lesions during first use
4
Q
Erosions of the sole (6)
A
- Accompanies bruising in neonates
- Infection can enter to cause tenosynovitis
- Peaks at 5-7 days
- Disappears by 14 days
- Accessory digit lesions peak at 7-8 days
- Only tenosynovitis remains
5
Q
Trauma (4)
A
- Particularly to accessory digits
- Slip through incorrectly-sized mesh
- Rip easily
- Sow may stand on piglets toes
6
Q
Joint ill (5)
A
- From infection with streptococci such as S. suis type 1, but also environmental e.coli, staphs and streps
- Infection gains entry through any open wound early in life, for example, via the navel, teeth clipping, tail docking or foot injury
- In older age groups caused by Glasser’s
- Pyrexia
- Responsive to antimicrobial.
7
Q
Weaners (5)
A
- Infectious arthritis (Glasser’s disease, streptococcal arthritis, Staphylococcus hyicus, Mycoplasma hyorhinis)
- Trauma
- Foot lesions
- Neurogenic lamenesses
- Rickets
8
Q
Weaner Infectious Arthritis (6)
A
- H. parasuis in Glasser’s
- S. suis type 2 or 14
- M. hyorhinis (3-10 weeks)
- All give rise to hot, fluid-filled joints
- S. suis and Glasser’s associated with fever and mortality
- Can respond to treatment
9
Q
Growers (6)
A
- Consequences of earlier infectious arthritis (Glasser’s disease, streptococcal arthritis)
- Fresh infectious arthritis (Mycoplasma hyosynoviae)
- Bursitis
- Trauma
- Foot lesions
- Neurogenic lamenesses
10
Q
Mycoplasma hyosynoviae (7)
A
- 35-115 kg and in recently purchased breeding stock
- Infection oronasal at 10-12 weeks
- Afebrile in most cases
- Affected pigs limp, shift weight
- Clear yellowish brown joint fluid
- Confirm by bacterial isolation or serology
- Treat with tiamulin, lincomycin, tetracyclines and Nsaid’s
11
Q
Adventitous Bursitis (5)
A
- Extremely common (85% pigs)
- Arises when pigs housed on solid floors or slats
- Causes 0.5 kg reduction in carcase yield through trimming
- Prevent by early bedding on soft flooring
- Can become infected/ ruptured if housed on abrasive floor or wet fed
12
Q
Finishers (8)
A
Governs transport for slaughter • Osteochondrosis dissecans • Mycoplasma hyosynoviae • Erysipelas • Bursitis • Trauma • Consequences of earlier conditions • Foot lesions
13
Q
Osteochondrosis
- age
- what (3)
- CS (5)
- predisposition (4)
A
• From 1 day of age
- Incomplete ossification of cartilage at growth plates
- Results in collapse of joint surfaces (degenerative joint disease) and epiphyseolysis
- Flakes of cartilage in fluid from damaged joints
- Heavy, rapidly-growing pigs
- Elbows of some Duroc boars
- Slow growth may reduce (gilts)
- Effect of loose housing
CS: • Swaying gait and knock knees • Sudden collapse with epiphyseolysis • May resolve by 6-9 months of age • Slow growth may reduce (gilts) • Effect of loose housing
14
Q
Young Breeding Stock (6)
A
A cause of dispute over animals fit for purpose with effects on fertility
- Osteochondrosis dissecans
- Mycoplasma hyosynoviae
- Erysipelas
- Trauma
- Foot lesions
15
Q
Adults (6)
A
A major cause (30-35%) of culling • Erysipelas • Osteochondrosis • Foot lesions • Trauma – particularly since all sows became loose housed • Osteitis • Osteoarthritis
