Farm Data & Herd Health Management

Question 1

Herd Health Management

Answer 1

Measure
Manage
Motivate
Monitor

Question 2

Clinical Problem Solving

Answer 2

Hx + signalment
Physical exam - physical parameters
Problem list - rank abnormal parameters
1° problems
Ddx
Plan

Question 3

Incidence rate

Answer 3

Number of events/ animal-time at risk

Question 4

Lag period

Answer 4

interval between 2 events that determines whether 2nd vet is a recurrence/ new case

Question 5

3 Key Questions

Answer 5

Are the observed effects likely to be real?
Are the effects clinically relevant?
What needs to change as a result?

Question 6

How to know if effect is real?

Answer 6

Effect is more likely to be real if:
- magnitude of effect is large
- number of sampling events is large

Question 7

Incidence

Answer 7

Rate over time
Defined population & time frame
Cow yrs at risk
Cases per cow/ 100 cows per yr

Question 8

Prevalence

Answer 8

Proportion affected at fixed point in time
Typically clinical scoring data