1. Heard-health-parameters Dairy Herds Calculating Workability
Comparison of Different
Heard-health-parameters
used in
Dairy Herds
concerning algorithm of
Calculating
and
Workability

2. Heard-Health-Parameters
No Single-Health-Parameters concerning one animal
(Temp, Heart Rate, Respiratory Rate, Milk Yield measured on a day or longer period, Calving interval, Time to first service, SCC)
Concerning more animals in a herd (Culling Rate, Service Rate, Conception Rate, Pregnancy efficiency, Cows pregnant)

3. Workability
Making sense
Unique
Fast
Low Costs

4. Milk Yield
Fertility
Longevity
Milk Quality

5. Milk
Animals
Fertility
Longevity
Udder Health
Metabolism
sold

6. Relation
Amount a
Amount b

7. Proportion
Part amount a
Whole amount a

8. Average

9. Does only make sense as a stock variable
Average and Time
Average
Time
Does only make sense as a stock variable

10. Events as Relation or Proportion
Time

11. Which fertility parameter make sense?
Calving interval
“In-Calf-Rates”
Conception rate
Submission rate

12. Calving Interval Can a herd have a calving interval?
Single cow parameter
How we can transform it to a herd parameter?
Mean calving interval?
Which cows in a herd? heifers? how we can put it in relation to a time period?

13. What we look upon as fertility?
Amount of cows calving in a period of time? end of the pregnancies
Amount of cows conceiving in a period of time? start of the pregnancies
How to put it in relation to herdspecific parameters? Eligible, herdsize
How to put it in relation to time. Which calendar?
Gregorian, 21 day period

14. The event time relationship
Rates, Flow variables, events per time telling you what happens in a period of time
Possible events start of the pregnancies, served cows, culled cows
Gregorian calendar Months 28 – 31 days, quarter 60 – 62 days, year 365 to 366 days
21 day period different calenders, or periods in a year.

15. Pregnancy Rate 21 day period

16. Pregnancy Rate Monthly

17. Fertility Events Relations Conceptions (start of pregnancy) Services
Conceptions/Services /Time
Conceptions/ Herdsize/Time

18. Stock variables in a time period
Herd size in February 2016: days. 10 days x 100 cows, 10 days x 98 cows, 9 days x 101 cows cow days/29 days = 99.62
Cow days, heifer days, cow <= 63 days in lactation days, cow eligible to breed days start of the pregnancies, served cows, culled cows

19. The 21 day period
17 periods in a year confusing: days x 101 cows cow days/29 days = 99.62
How to get the 21 day period character?

20. A cow counts every 21 days as 1 eligible cow.
Usual calculation: cow 21 days in February 2017 counts 21/29 = 0.72
How to get the 21 day period character?
cow 21 days in February 2017 counts 21/29 * 29/21 = 1

21. January 31 days Cow days Counts Cow 15 0.71 Cow 5 0.24 Cow 21 1

22. “In calf rates cumulative”

23. “In calf rates to DIM”

24. Rates:
Culling Rates (all cows, cows -42, cows -64, calves -21 days, youngstock 12 to 56 weeks)
Fertility Rates (pregnancy rate, pregnancy efficiency, submission rate, conception rate, fertility rate)
Udder health Rates (scc per month, -new infections, cured –during lactations and over dry period)
Metabolism Rates (Milk per cow and day in lactation stages Percentage Fat content higher 5.1 percent -42 Dim, -84 Dim)

25. Fertility
Pregnancy Rate
Service/Mating
Rate
Conception Rate

26. Concieved
/Time!
Served
Eligibles

27. Time Pregnancy Rate Eligible to conceive Conceptions served served

28. Pregnancy rate
Conceptions
Eligible to conceive
Time

29. Fertility Rate
Conceptions
Cow Herd Size
Time

30. Submission Rate
Served
Eligible to conceive
Time

31. Conception Rate
Conceptions
Served
Time

32. Fertility Rate Yearly

33. Fertility Rate Quarterly

34. Fertility Rate Monthly

35. Eligible Rates Yearly

36. Eligible Rates Quarterly

37. Eligible Rates Monthly

38. Udder health parameter
SCC average values
Proportion Infected
Infection history lactation dry Period
When a cow deems as infected?

39. When a cow deems as infected?
140 k/ml in USA
200 k/ ml in UK
100 k/ ml in Germany
On from 100 k/ml composition changes
On from 120 k/ml no hard cheese

40. Culling Parameters Cows: lactation, lactation-stage
Youngstock: Grouping in ages
Breeds, Genetics

41. The meaning of workable Herd-Health-Parameters
Making decisions on farm
Making conclusions in research

42. Meaningful, unique, fast and low cost
Purchase software packages (check the criteria)
Do a lot yourself (with some training and some IT-Tools)

43. How to do it? Microsoft Office
Use some software tools that control Microsoft Office to calculate the figures and prepare the graphs.

44. PDF CDL FILES MS Access More than hundred in one go in minutes
BCMS Data
BCMS Data
More than hundred in one go in minutes
CDL FILES
PDF MS
Access
MS EXCEL
Download many in one go
Farmers
Data
Farmers
Data
Vets
Data
Vets
Data