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Michigan Johne's Disease Control Demonstration Project
Dairy Herd 6
Characteristics
Risk Assessment
Testing Results
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Characteristics
CATEGORY |
CHARACTERISTICS |
Breed |
Holstein |
Housing |
Confinement free stall |
Feeding System |
TMR |
Expanding? |
No, closed herd since the 60's. |
Raise own replacements |
Yes. |
Open or closed herd |
Closed herd since the 60's. |
# Lactating cows |
2003: 117
2004: 126
2005: 150
2006: 146
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Breeding Program |
Artificial Insemination |
Rolling Herd Average |
2003: 26,535 lbs
2004: 28,130 lbs
2005: 27,191 lbs
2006: 27,421 lbs |
Calving |
Two calving pens cleaned between calvings |
Colostrum feeding |
Calves get 4 quarts of colostrum. |
Waste milk feeding |
Some waste milk fed during the first week of life. |
Management of cattle that test positive for Johne's disease |
Johne's disease 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 |
Group calving pen reused with out cleaning |
Two individual calving pens created. Cows put into calving pen when calving is imminent. Cleaned between calvings. |
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Pooled colostrum |
Colostrum fed from one cow to one calf.
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Feeding of waste milk |
Switched to milk replacer as primary milk source. |
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Testing Results
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NAHMS
2002 Johne's Report |
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