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Group Calving Pen at Dairy Herd 7 |
Characteristics
CATEGORY |
CHARACTERISTICS |
Breed |
Holstein |
Housing |
Confinement free stall |
Feeding System |
TMR |
Expanding? |
Expanded from ~ 100 cow to > 500 cows over 5 years |
Raise own replacements |
Yes |
Open or closed herd |
Open during expansion. Still buy occasional groups of cows. |
# Lactating cows |
2004: 439
2005: 432
2006: 435
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Breeding Program |
Ovsynch and artificial insemination |
Rolling Herd Average |
2004: 27,369 lbs
2005: 28,353 lbs
2006: 28,694 lbs
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Calving Pen |
Group pen that uses a bedded pack. Kept well bedded and cleaned as needed |
Colostrum feeding |
Calves get 4 quarts of colostrum, only colostrum from negative JD cows is supposed to be used |
Waste milk feeding |
Not done |
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
When this herd began the Michigan Johne's Disease Control Demonstration Project it was classified as being at moderate risk for continued Johne's disease transmission for the following reasons:
- Few clinical cases in home-reared
animals, generally older
- Clinical cases are 2 to 5% of herd/year /average in recent years
- 6-19% test positive in a mixed group of animals
- 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 |
High density common calving area |
1. Frequent checking of maternity pen by employees with rapid removal of calves.
2. Frequent bedding of maternity pen. |
Design and build a new close-up/calving barn with individual calving pens |
Feeding of waste milk |
Batch pasteurizer purchased (see photo
above).
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Testing Results
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NAHMS
2002 Johne's Report |
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