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Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive...

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Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of dealing with disease problems only after they have arisen, which thousands of years of magic and dosing have firmly established…is antagonistic to disease prevention” …those more particularly concerned with the food- producing animals must think in terms of hygiene, for their success is in no small measure dependent upon their knowledge of the subject”
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Page 1: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

The Principles of Animal Hygiene and Preventive Veterinary Medicine

“The faith in “cures” and the practice of dealing with disease problems only after they have arisen, which thousands of years of magic and dosing have firmly established…is antagonistic to disease prevention”

…those more particularly concerned with the food-producing animals must think in terms of hygiene, for their success is in no small measure dependent upon their knowledge of the subject”

Leunis Van Es 1932, University of Nebraska, Lincoln

(slide from Dr. David Smith)

Page 2: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Biosecurity… in the “real world”?

… can you say

“A-RITS”

Page 3: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Page 4: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Understand What We’re Up Against

• How are cattle (the ultimate recyclers) raised?– approximately 100M in U.S. …– 50% from herds less than 30 …– 90% beef & 10% dairy … of the beef …– 2 years from birth to food supply– 40% in breeding herds– 30% grazing – 30% harvested each year– ALL in OPEN AIR ENVIROMENT !!! … wildlife

• deer, coyotes, raccoons, birds, rodents, insects, …

Page 5: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Biosecurity Basics for Livestock Operations• Biosecurity is a practice designed to prevent the

spread of disease by minimizing the movement of biologic organisms (viruses, bacteria, rodents, etc.) onto and within an operation.

• Biosecurity can be very difficult to maintain because of the very complex interrelationships between management, biologic organisms and biosecurity.

• Biocontainment maybe the only practical control for many diseases.

• While developing and maintaining biosecurity is difficult it is the cheapest, most effective means of disease control available and no disease prevention program will work without it.

Page 6: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Health - Disease Complex Interactions

Page 7: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Biosecurity Major Components:

ASSESS Different Biosecurity Risks– RESISTANCE Improvement

ISOLATE from riskTRAFFIC Control

SANITATION – Think Clean

RITS are hurdles threats must cross to cause a concern

Page 8: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

1st … the big “A” … ASSESSMENT• Take a close look at what can go wrong …• Assess the risk of each potential biosecurity

problem …the relative significance & potential• Evaluate potential to PRCE each risk identified!

» Prevent, Reduce, Control, or Eliminate

– Resistance in the herd …– Source into and within the herd … – Exposure within the herd …

• Don’t Gag On A Gnat & Swallow An Elephant!

Page 9: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

2nd …“RITS”Resistance, Isolation, Traffic Control, & Sanitation.

??? Evidence Based ???

–Maximize resistance General Specific

– Isolate from outside & within–Control exposure & potential spread–Clean, Clean & Clean … think CLEAN!

Page 10: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Biosecurity – Specific Disease Control & Identification

• Risk• Training • Isolation• Traffic Control

• Sanitation• Action Trigger• Rapid Response• Comments

EXAMPLES … BS-Man-07-SpecficDisCont&ID.doc

Page 11: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Biosecurity Diseases to Consider: • Salmonella• BSE• FMD• BVD-PI• Leptospirosis• Johne’s• Leucosis• Anaplasmosis• Viral calf scours• TB - Bangs

• Johne’s• Leucosis• Anaplasmosis• Viral calf scours• TB – Bangs• Cryptosporidiosis• Coccidiosis, Sarcocystis• Neospora, Toxoplasma• Trichomoniasis, Vibrio • Common Inherent Diseases

IBR, BVD, PI3, BRSV, Mh & Pm Mycoplasma, & Clostridia

Rank significance to different production systemsThreat type: EXTERNAL, INTERNAL, MANAGEMENT

• Staph mastitis??? Mastitis (others???)

• Chronic Wasting Disease (CWD)• Noxious weed• Specific Bioterrorism Issues:

Page 12: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Secret to Biosecurity Hazard Analysis, Critical Control Points

Justify

Verify

Monitor

Target Activitiesto

Targeted OutcomesPrevent, Reduce Control, Eliminate

Page 13: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Validate the HACCP Plan Hazard Analysis, Critical Control Points (HACCP):

• "Validation is the scientific & technical basis for CCP determination & CL identified and which control hazards." Validation should include a third party review and should be done regularly (yearly?).

• Validation should reassess potential new hazards.

• Evaluate all production steps, suppliers, equipment use and maintenance, isolation procedures, traffic control and sanitation.

Page 14: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Risk Management - PECR• Prevent, Eliminate, Control, Reduce

– Resistance … General Specific– SOURCE, EXPOSURE … Additions …– Isolate, test, monitor, re-test …– Traffic Control …– Sanitation …

• Justify Verify Monitor– Is there evidence for control?– Is it getting done?– Is it working? (surveillance testing)

Page 15: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Sanitation … Disinfectants• Sanitation should stress

CLEAN … not the use of disinfectants• Selection and use of Disinfectants

–Understand the target pathogen–Understand the organic load–Understand the disinfectant properties–Understand disinfectant have been

documented to relate to antibiotic resistance

Page 16: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Disinfectant Classification

• Hypochlorites:• Iodine and ionophore disinfectants:• Chlorhexidine:• Alcohols:• Oxidizing Agents:• Phenolic disinfectants:• Quaternary Ammonium Compounds:• Aldehydes:

Page 17: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Disinfectant Properties .

Compound Chlorine0.01-5%

Iodophor0.5-5%

Chlorhexidine0.05-0.5%

Alcohol70-95%

Oxidizing0.2-3%

Phenol0.2-3%

QuaternaryAmmonium 0.1-

2%

Aldehyde1-2%

Examples Clorox Tincture /Provodine

Novalsan VikronS Lysol Roccal-D Wavicide

Bactericidal Good Good Very Good Good Good Good Good V Good

Viricidal V Good Good Very Good Good Good Fair Fair V Good

Envelope Viruses Yes Yes Yes Yes Yes Yes Yes Yes

Non-Envelope Viruses

Yes Yes No No Yes No No Yes

Bacterial Spores Fair Fair Poor Fair F to G Poor Poor Good

Fungicidal Good Good Fair to Good Fair Fair Good Fair Good

Effective in Organic Matter

Poor Fair Fair Fair Poor Good Fair Good

Inactivatedby soap

No No &Yes No No No No Yes No

Effective inHard water

Yes No Yes Yes Yes Yes No Yes

ContactTime (minutes)

5-30 10-30 5-10 10-30 10-30 10-30 10-30 10-600

Residual activity Poor Poor Good Fair Poor Poor Fair Fair

All About Disinfectants

Page 18: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Disinfectant … Virus TargetsVirus Envelope Virus Envelope Virus Envelope

Bluetongue No Malignant Catarrhal Fever Yes PI3 Yes

Rotavirus No Enteric Coronavirus Yes Rabies Yes

Papillomatosis No Resp. Coronavirus Yes Herpes Mammillitis Yes

Leukemia Yes BVD Yes CowpoxPseudocowpox Yes

Papular Stomatitis Yes BRSV Yes Foot & Mouth No

Vesicular Stomatitis Yes IBR / IPV Yes Lumpy Skin

Disease Yes

Go to End

Page 19: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Biosecurity Risk … Evaluate• Accessibility• Personnel

training• Reservoir(s)• Isolation• Traffic Flow• Sanitation• Pest Control

Page 20: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

Biosecurity-Security … “what if” Emergency Action Plan

• Assessing the situation:• Is it a disease concern? • Is it a contaminate concern? • Is it an intruder concern? • NOTIFY THE PROPER PERSONNEL• IMPLEMENT QUICK RESPONSE PLAN

– SANITATION … SECURITY Go to End

Page 21: Great Plains Veterinary Educational Center The Principles of Animal Hygiene and Preventive Veterinary Medicine “The faith in “cures” and the practice of.

Great Plains Veterinary Educational Center

http://FarmAndRanchBiosecurity.com


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