MinnesotaDHIA News
A PUBLICATION OF MINNESOTA DHIA Volume 6, Issue 11 November 2006
DHIA Scholarships Deadline Approaching
November 30 is the deadline for applications for $500 DHIA Scholarships. DHIA members and DHIA employees and their families are eligible. Applications are available from your DHIA Field Rep on sample day, on the National DHIA website www.DHIA.org, or by calling our office at 800-827-3442. Last year, there were 15 winners from Minnesota DHIA membership.
New Member Drive
Minnesota DHIA is seeking new members this fall. There are special incentives for Field Reps, and discounts for new members. Pass along any prospect names you may have to your Field Rep on the next sample day, or call them in to us at 800.827.3442. We encourage all Field Reps to offer 12 tests per year to all customers, and we (and most consultants that visit dairies) recommend herds test every month.
Johne’s Test Now Available on DHIA Milk Samples
For the past several months, the University of Minnesota Veterinary Diagnostic Laboratory and the DHIA Labs in Sauk Centre and Zumbrota have been gearing up to offer the Milk ELISA Johne’s tests to Minnesota dairy producers, whether they be DHIA members or not. The test is now available. It utilizes the same DHIA milk sample collected for butterfat, protein, and SCC. Extensive research and testing show the milk test to be very comparable to the serum ELISA Johne’s test that has been a standard test for many years. ELISA tests are looking for the antibodies the cow creates to fight a specific disease, not the disease itself. Once sampled, the antibodies do not grow, research shows the small amount of milk that is left in a flask from one cow to another does not impact the result for a cow.
The test has been available for several years through Antel Bio in Lansing Michigan, and is also now available in DHIAs across Canada, Texas, Arizona, and Wisconsin. The Milk ELISA test is the second of perhaps many ELISA tests that will be available for use on the regular DHIA milk samples. MN DHIA previously offered Staph. aureus ELISA testing using the DHIA milk samples.
The obvious advantages of the milk test include that sampling is easy (and inexpensive) compared to taking blood samples, results will be fast, and that the data will be integrated into the DHIA database and reporting system for your herd. We will provide the numerical result and positive or negative status. Please see the following joint release for more information. To order the test on selected cows or the whole herd, simply talk to your DHIA Field Rep on your next sample day.
We will send results to your Vet if you would like us to. In compliance with the regulation that Johne’s is a reportable disease, we will also report results to the Board of Animal Health. The Board of Animal Health and University of Minnesota will use the results for statistical and research purposes only. Results will not appear anywhere in the public record, and no follow up on herds will be pursued as a result of the Milk ELISA Johne’s test. We will submit the data under your herd’s Premises ID that you have probably received from the Board of Animal Health as a part of the developing National Animal Identification System that is designed to track animal diseases in the event of an Animal Health Emergency.
Producers who have vaccinated against Johne’s should not use the ELISA tests.
We urge producers to work with your Veterinarian on using Johne’s test results, and contact the Minnesota Board of Animal Health for more information about their Johne’s control assessment tools and programs.
Date: November 16, 2006
To: Minnesota Dairy Producers
From: Minnesota Board of Animal Health
MinnesotaDairy Herd Improvement Association (DHIA)
Universityof MinnesotaVeterinary Diagnostic Laboratory
Subject: Milk ELISA Test for Johne’s Disease
A test for the diagnosis of Johne’s Disease is now available to Minnesota dairy producers. It is an ELISA test that detects antibodies in milk against the organism that causes Johne’s Disease, Mycobacterium avium subsp. paratuberculosis. The test kit to be used will be ParaCheck® by Prionics (formerly CSL/Biocor).
Milk ELISA testing will be conducted by the Minnesota Dairy Herd Improvement Association (DHIA) under the supervision of the University of Minnesota Veterinary Diagnostic Laboratory. Tests will cost $5.00 per sample and will be charged directly to the producer.
The milk ELISA test can be used by all producers, but it is not yet approved for use in the National Johne’s Disease test negative herd program. At this time, milk ELISA tests will not be subsidized by state or federal funds. The serum ELISA test, fecal PCR and fecal cultures will continue to be available through the University of Minnesota Veterinary Diagnostic Laboratory.
As with all Johne’s Disease tests, the milk ELISA test is most effective in detection of infected cows over 36 months of age that are shedding moderate to high levels of the organism. For best results, cows may be sampled any time during lactation except for the first seven days.
Results will be reported as a numerical value indicating the level of antibodies in the sample. Numeric values for the Prionics milk ELISA test are different than values reported for the IDEXX serum ELISA. Numeric values reported for the two tests compare as follows:
|
IDEXX serum ELISA (Sample/Positive Ratio) |
Prionics milk ELISA (Optical Density Difference) |
Negative test result |
< 0.25 |
< 0.10 |
Positive test result |
> 0.25 |
> 0.10 |
Positive test result – moderate |
> 0.40 |
> 0.25 |
Positive test result - high |
> 1.00 |
> 0.60 |
Milk ELISA tests for Johne’s Disease will be conducted upon producer request using the normal milk samples collected by DHIA. Results from the tests will become a part of the producer’s DHIA records and will be reported to the University of Minnesota Veterinary Diagnostic Laboratory and the Board of Animal Health
For more information, contact the Minnesota Dairy Herd Improvement Association at 1-800-827-3442 or the Minnesota Board of Animal Health at 651-201-6824.
October Milk Quality Top 100
|
SCC |
Cows |
|
|
SCC |
Cows |
DAN AND JOLENE SCHLANGEN |
32 |
63 |
|
ROGER ALDINGER |
107 |
65 |
PRAHL DAIRY |
39 |
33 |
|
DEAN RAUSCH |
107 |
63 |
CHADFELTMANN |
46 |
11 |
|
PHIL SUESS |
110 |
66 |
ZUMBRO VIEW FARMS LLC |
58 |
47 |
|
MARK TESSMER |
110 |
42 |
LARRY AND SHARON WISTE |
59 |
27 |
|
BRUCE AND JODI HEIM |
110 |
141 |
PINELANE JERSEYS |
60 |
15 |
|
BLUE LAKE DAIRY |
111 |
70 |
NORBERT BROWN |
61 |
47 |
|
HAZEL-BUSH FARMS INC |
111 |
47 |
JERON NATHE |
62 |
232 |
|
RICHARD SCHNOBRICH |
112 |
43 |
OAK GLEN JOHNS |
63 |
32 |
|
BRED & BUTTER DAIRY |
112 |
64 |
ROLLING W ACRES |
65 |
27 |
|
DANIEL HALLBERG |
112 |
59 |
DOUG AND JOAN RUTTEN |
65 |
22 |
|
SELKE FARMS |
113 |
163 |
GERALD+LISA BURG |
67 |
43 |
|
JIM KULINSKI |
113 |
51 |
KALMES FARMS INC |
71 |
111 |
|
OREN AND JULIE OLSEN |
114 |
86 |
DAVID SMITH |
72 |
24 |
|
KEVIN SPLETT |
115 |
53 |
STEVEN ASHER |
73 |
32 |
|
PAUL NIES |
115 |
42 |
HAPPKE HOLSTEIN FARM |
76 |
65 |
|
MICHAEL AND KRIS BANSE |
116 |
69 |
SIBERT FARMS |
79 |
54 |
|
BIRCH POINT FARMS PESHON |
117 |
222 |
JON WINTER |
80 |
33 |
|
CIRCLE DRIVE HOLSTEINS |
117 |
18 |
DAVID SCHUUR |
80 |
62 |
|
HENDRICKSON DAIRY |
118 |
29 |
LARRY & CAROL MOEN |
83 |
71 |
|
HAROLD + BONNIE SCHOSSOW |
118 |
57 |
HELEN NOWASKEY |
83 |
24 |
|
AIMEE FINLEY |
118 |
93 |
BEVENDALE HOLSTEINS |
84 |
65 |
|
BRAD GLENZ |
119 |
46 |
SARAH L POLYOCK |
85 |
66 |
|
KEITH R JOHNSON |
120 |
44 |
CHUCK KLAPHAKE |
86 |
102 |
|
DEVOINE KRUSE |
120 |
141 |
BILL MILLER |
86 |
178 |
|
SMITH FAMILY FARMS |
121 |
283 |
KEVIN & SHEILA THARALDSON |
86 |
51 |
|
VON WAHLDE DAIRY |
121 |
93 |
KIRK BENGTSON |
87 |
45 |
|
MICHAEL LEHNERTZ |
123 |
139 |
AL + MARK SCHMITT |
87 |
93 |
|
DAVE + KATHY SKIBA |
124 |
126 |
DENNIS BOYENGA |
87 |
38 |
|
SON-BOW FARMS INC |
124 |
917 |
RONALD AND SUSAN JOHNSON |
89 |
63 |
|
SCOTT FELDHACKER |
125 |
58 |
DONALD + DARLENE MATROS |
91 |
77 |
|
JOEL & NICOLE GROSS |
125 |
44 |
WALLY W WIESE |
92 |
28 |
|
O + S DAIRY |
125 |
216 |
WAYNE AND WADE ATHEY |
93 |
40 |
|
BASHAW LAKE HOLSTIENS |
125 |
33 |
JOHN ROBERS |
96 |
22 |
|
JAMES M TESSMER |
125 |
47 |
SCHEFERS BROS |
96 |
77 |
|
KB HILLSIDE DAIRY |
126 |
42 |
ART AND JANE STUMPF |
98 |
52 |
|
NOSBUSH DAIRY |
126 |
415 |
KUNST FARMS |
98 |
69 |
|
PAUL WEIDENBORNER |
127 |
144 |
DONALD G WETTSTEIN |
99 |
28 |
|
AUSMUS FARM |
127 |
60 |
PETER & MARK HENDRICKSON |
100 |
73 |
|
SOLYNJA DAIRY ACRES |
127 |
82 |
LESTER AND GARY RYDEEN |
100 |
45 |
|
WILL TACHIBANA DAIRY |
128 |
32 |
PAUL & MARY ZIMMERMAN |
100 |
56 |
|
ROBERT KALLEMEYN |
128 |
75 |
STEVE + DEB HEUER |
100 |
34 |
|
DARREL + LISA MAUS |
128 |
66 |
DANIEL SCHULTZ |
101 |
33 |
|
LYNN WAEGE |
129 |
55 |
MIKE & PAT BERNECKER |