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Characteristics
CATEGORY |
CHARACTERISTICS |
Breed |
Holstein |
Housing |
Confinement free stall. Dry cows and bred heifers on pasture year round. |
Feeding System |
TMR |
Expanding? |
Expanded in early 90's. Currently closed. |
Raise own replacements |
Yes. |
Open or closed herd |
Currently closed. |
# Lactating cows |
2005: 424
2006:
382 |
Breeding Program |
All bull bred. |
Rolling Herd Average |
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Calving |
Calve on pasture during spring/summer/fall. Four individual calving pens used in winter. |
Colostrum feeding |
Calves get 4 quarts of colostrum. Calves born to JD test positive cows get colostrum replacer. |
Waste milk feeding |
None. |
Management of cattle that test positive for Johne's disease |
JD test positive cows are identified and remain on the farm until not productive. |
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Risk Assessment - NOT ACCURATE
When this herd began the Michigan Johne's Disease Control Demonstration Project it was classified as being moderate to high risk for continued Johne's disease transmission for the following reasons:
- Occasional clinical cases in raised animals, generally older
- Clinical cases are 2 to 5% of herd/year /average over past several years
- Number of cases increasing, and/or cases are younger in age
- Management history includes some risks for spread in the past
Major Risk Areas and Preventative Actions
Johne's
Disease Transmission Risk |
What's
been done to decrease risk |
Long-term goal |
Calvin pen reused with out cleaning. |
New single use calving pens built. |
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Calves left with cow for up to 24 hours. |
Calf removed ASAP after calving.
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| Pooled colostrum. |
1. Colostrum fed from one cow to one calf.
2. Colostrum replacer used for heifers born to JD test positive cows. |
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Breeding age heifers have access to manure run off from the lagoon (see photo above.) |
Run off area fenced off to limit access. |
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Testing Results
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NAHMS
2002 Johne's Report |
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