Australian Dairy Herd Improvement Report 2010.pdf

Partner Project
Mastitis Focus Report
MACALISTER RESEARCH FARM
PO BOX 87
MAFFRA, 3860
Your Herd
Trigger
Mastitis Focus reports can be generated for herds
using the common herd management software
(such as Mistro Farm and Easy Dairy) or herd
recording data systems in Australia.
The Mastitis Focus report is a great value-add to
those investing in herd recording. It uses individual
cow cell counts to describe how quickly infection
is spreading to clean cows in the herd. A high ‘New
Infection Rate’ often precedes an increase in clinical
cases – and taking early action can help avert a
clinical case outbreak.
V 1.1015
Report period: 01.11.09 - 31.10.10
Total calvings: 306
Herd test cell count: 161
YOUR HERD ANNUAL PERFORMANCE SUMMARY
Clinical Case Rates
Calving Lactation
0
cases per 100
cows calved
1
cases per 100 cows
in milk per month
>5 >2
New Infection Rate
Subclinical & Clinical
Your Herd
Trigger
3
cases per 100 cows
in milk per month
>5
Herd ID: 703293
Printed: 08.12.2010
Herd Milk Cell Counts
Average cell count at the
4 most recent tests
18.10.10 161
10.05.10 166
04.03.10 91
06.01.10 73
Queries around clinical case treatment
effectiveness, the numbers of recurring cases and
the levels of mastitis at calving were high on the list
of concerns for farmers participating in the industry
consultation (see Figure 2). Mastitis Focus reports
these parameters for farms that enter Lactating Cow
Treatments into the herd management software.
However, this information is currently only able to
be assessed for about 10% of herds because the
data is not entered into the computerised herd
records despite all farmers keeping these (usually
paper-based) records as part of their quality
assurance programs.
Dairy veterinarians have a good grounding in the
principles of clinical case management and are able
to help farmers develop protocols and reduce the
risk of ‘outbreaks’ in their herds.
Currently, about 100 Mastitis Focus reports are being
generated from the web per month. To increase its
use, industry needs to promote the flow of clinical
case data into the system and Countdown needs to
help dairy advisers become more familiar with the
report and confident in recommending its use.
KEY MANAGEMENT AREAS IN FOCUS
Your calving system
Clinical mastitis
10
5
0
Monthly clinical case rate at calving (all cows)
When cases occurred
N D J F M A M J J A S O
First calver
clinical case rate
Your Herd
0
cases per 100
first calvers
Trigger
>5
Trigger
5
cases
per
100 cows
calved
Monthly clinical case rate in lactation (all cows)
When cases occurred
10
Trigger
2
5
cases
per
100 cows
in milk
0
N D J F M A M J J A S O
Total
clinical cases
Treatment failure
Cases with an extended treatment
Your Herd
24 cases
Your Herd
4%
Trigger
>20%
Spread of infection
10
5
0
First calver
new infection
Indicates the extent
of spread
Your Herd
11%
Trigger
>15%
Average new infection rate (all cows)
When clean cows became infected
N D J F M A M J J A S O
Culling to control mastitis
Cows prone to
clinical mastitis
Cows in herd with 3 or more
clinical cases in a lactation
Cows infected in
multiple lactations
Cows still infected after
2 consecutive prior lactations
despite intervening DCT
Star rating
Your Herd
2 cows
?
Trigger
5
cases
per
100 cows
in milk
?
Trigger
Any Cows
Any Cows
Previous dry-off strategies
Failure to cure over the dry
Existing infections not cured by
antibiotic Dry Cow Treatment
Missed treatments
Infected cows that didn't receive
antibiotic Dry Cow Treatment
Infections over the dry
Cows that became infected
in the dry-off or at calving
Dry period clinical case rate
Indicates the success of the
dry-off procedure
Your Herd
?
?
14%
Plan your next drying-off
Only consider a
selective DCT strategy when:
You have 4 or more cell counts for each cow
Strep ag is not present in your herd
(based on milk culture results)
Less than 30% of cows had high cell counts
Your clinical case rate at calving was less than 5
?
Trigger
>20%
>5%
>10%
?
>1
case per 100 cows
Your Herd
Yes
See your vet
No
Yes
Consistently below trigger points Opportunity to reduce risk Seek professional advice Insufficient records
?
Figure 3: You can practise generating this Mastitis
Focus test report or try with a file from a client’s
farm.
• Download the Macalister Research Farm file onto
your computer from http://www.dairyaustralia.
com.au/Farm/Mastitis-and-milk-quality/
Mastitis-Focus.aspx
• Go to www.mastitisfocus.com.au then follow the
prompts and load the Macalister zip file. If you
want your report to exactly match the report on
the left, enter the report date as 31/10/2010.
• PDFs of the generated reports will then appear as
links that you can click on and will also be sent to
your nominated e-mail address.
14 Australian Dairy Herd Improvement Report 2010