16 + 17: Foot Lameness Flashcards
What is lameness prevalence in cattle?
25%
Why is lameness tolerated?
Because doesn’t affect milk saleability
What % of lameness related to hoof and claws?
90%
Which claw is the problem in hind claws?
Lateral
Which claw is the problem in fore-claws?
Can be either
How quickly is hoof produced?
5mm/month
How long does it take before the horn becomes weight bearing?
15 months
What does the perioptic dermis produce?
Thin waxy waterproof coat
With what factors can the digital cushion vary
Age and BCS (lost in early lactation)
When should you do mobility scoring?
On the whole herd, on concrete, every 3 weeks
For how long should you mobility score?
6-10 uninterrupted steps from the side and then behind
What does a mobility score of 0 indicate?
Good
What does a mobility score of 1 indicate?
Impaired, but can’t tell which limb
What does a mobility score of 2 indicate?
Impaired, and can tell which limb (examine within 48 hours)
What does a mobility score of 3 indicate?
Severe, can’t keep up with herd (examine within 48 hours)
What are some examples of footbath ingredients?
Formalin, copper, zinc
How big should a footbath be?
3m long, cover coronet band, not allow animals to walk on sides
How often should you change a footbath?
After 1L per cow
At what two points should you do routine foot trimming?
Drying off and 60 days lactation
How often should you do foot trimming?
Every 6 months
What should toe length be?
8.5cm
Which horn should you trim more on the hind feet?
Lateral, as greatest solar ulcer risk
How much of the inner hind claw should you tidy?
Back 1/3
How much of the outer hind claw should you tidy?
Back 2/3
What is the problem when treating corkscrew claws?
May take several attempts to treat
When doing a digit amputation, what joint do you amputate at?
Proximal interphalangeal or just above (so removing distal P1)
How often do you replace the bandage following digit amputation?
Every 3-7 days
What are the four factors the healthy feet program controls?
Infection pressure, good horn quality, early detection, low forces on feet
What is the reservoir for foot conditions?
Clinical cases left untreated, inadequate bathing, preventative measured
