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Biosecurity

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228/lactating cow. BVD: 1 infected = persistently infected calves for years $475/lactating cow. Why Biosecurity? Preventive approach to herd health ... – PowerPoint PPT presentation

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Title: Biosecurity


1
Biosecurity
  • Dr. Pepi Leids
  • NYS Department of Agriculture and Markets
  • Division of Animal Industry

Modified by the GA Agriculture Education
Curriculum Office July 2002
2
Why Should You Care?
  • Infectious diseases cost dairy producers
    production and profit
  • We are seeing increases in antibiotic resistance,
    making diseases harder to treat effectively
  • We are in the FOOD business

3
Why Should You Care?
  • Many clinical diseases represent the tip of the
    iceberg
  • Johnes 1 clinical 15 - 25 subclinically
    infected
  • 228/lactating cow
  • BVD 1 infected persistently infected calves
    for years
  • 475/lactating cow

4
Why Biosecurity?
  • Preventive approach to herd health
  • Reduce the herds risk for contracting or
    spreading a disease
  • Often requires only management changes, not
    capital investment

5
What is Biosecurity?
  • A collection of management practices which
    protect a herd from the entry of new diseases and
    minimizes the spread and/or adverse effects of
    disease within a herd.

6
The Animal Health Triad
7
Immunity and Challenge
Disease
Subclinical Disease, Poor Production, Reduced
Efficiency
Immunity (Immunity x Environment)
Challenge (Disease Agent x Environment)
8
Putting Biosecurity to Work
  • Minimize exposure to disease agents
  • Develop immunity
  • Manage environment to support above points

9
Reducing Exposure to Disease
  • Consider the paths for disease entry or spread
  • Cattle
  • purchased animals, heifers returning from grower,
    show animals
  • Manure
  • Pests, pets, wildlife
  • Feed
  • Water
  • Take steps to minimize your risk

10
Cattle
  • Single source you can inspect
  • Known health history
  • Primary secondary vaccine weeks before move
  • Test as appropriate
  • BVD-PI, Johnes, contagious mastitis, heel warts,
    salmonella
  • Protect the home herd

11
Transport
  • Insist on clean transport
  • washed between uses
  • 60 of trucks contaminated with salmonella
  • Dont group animals from other farms
  • Trained, conscientious haulers
  • Minimize stress

12
Minimize Animal Contact
  • Pets
  • cats, dogs, chickens, geese
  • Pests
  • rodents, birds, wildlife

13
Manure Management
  • Avoid mixing with feed
  • Consider flows
  • near feed storage
  • near youngstock
  • Watch for carriers
  • equipment
  • people
  • spreading

14
Feedstuffs - Mill to Farm
  • Rodent and bird control in feedmills
  • vectors for many bacterial diseases
  • Cleanliness of delivery trucks
  • alternatives to delivery at the barn
  • Drivers enter facilities only when necessary

15
Keep Feed Clean
  • Rodent and bird control in storage
  • Dont use manure equipment in feed handling
  • Preach caution in pushing up feed
  • Be alert for areas where manure could mix with
    feed

16
Dont Tolerate Fomites
  • Every visitor should clean sanitize
  • clothes
  • boots
  • hands
  • equipment
  • Discourage visitors from
  • entering facilities unnecessarily
  • parking near or working with youngstock
  • moving between different groups unnecessarily
  • Consider the order of work routines

17
Manage the Environment
  • Increase cow comfort through
  • Good stall design
  • assess utilization, lunging, resting posture
  • Proper ventilation
  • Proper footing
  • Grouping cattle to decrease disruption

18
Calving Area Management
  • Maternity pen is the highest priority area
  • clean and dry
  • single use
  • not a hospital pen
  • separate from cows
  • motel 6

19
Neonatal Management
  • Test for BVD-PI status before colostrum
  • Colostrum
  • 4 quarts ASAP
  • from calfs own dam or Johnes free cow
  • NO pooled colostrum
  • Dip navel
  • Remove calf ASAP

20
Environment
  • Nutrition
  • balanced for growth or production
  • analyze supplement
  • Vit. A E, Cu, Se, Zn
  • avoid molds mycotoxins
  • suppress immunity
  • pay attention to forage moisture levels and
    particle length
  • can alter rumen and intestinal pH, making harmful
    bugs more viable

21
Immunity
  • Consult with your own customers vets
  • Establish vaccination program which addresses
    diseases from all your customers
  • Keep records of vaccinations

22
Cow Calf Immunity
  • Role of vaccines colostrum
  • protects calf from diseases transferred across
    placenta
  • provides important passive immunity for the calf
  • should take into account any bugs that heifers
    might encounter on your farm

23
Summary
  • Avoid the entry or spread of pathogens
  • cattle, manure, feed, water, equipment, people
  • Manage the environment to
  • reduce spread of disease
  • optimize immunity
  • Maximize immunity
  • optimal passive transfer fetal colostral
  • sound vaccination program rigorously adhered to
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