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How to Control Mastitis and Lower Herd Milk Somatic Cell Count- Larry Fox

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This material was presented on November 11, 2010 as part of DAIReXNET's "Managing Somatic Cell Counts" webinar.

This material was presented on November 11, 2010 as part of DAIReXNET's "Managing Somatic Cell Counts" webinar.

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  • 1. How to Control Mastitis and Lower Herd Milk Somatic Cell Count Keys in prevention of mastitis and practices to lower and maintain lowered SCC Larry Fox Professor, Washington State University
  • 2. Key to Mastitis Prevention
    • Keep the bugs away from the teats
  • 3. Boy in the Bubble- David Demaret
  • 4. Objectives of Discussion
    • 1) Define mastitis
    • 2) Describe the mastitis triangle
    • 3) Discuss host immunity
    • 4) Discuss the mastitis pathogens
    • 5) Describe how control over the environment can lead to mastitis abatement.
  • 5. Mastitis Triangle
    • Mastitis
    Pathogen Environment Host
  • 6. How to Decrease Mastitis
    • Understand:
      • There are 3 types of mastitis pathogens-
      • The contagious
      • The environmental
      • The opportunists
  • 7. Mastitis Control- Pathogens
    • Contagious mastitis-
      • Chiefly Staphylococcus aureus
      • Mycoplasma sp. and Streptococcus agalactiae
  • 8. Mastitis Control- Pathogens
    • Environmental mastitis-
      • Coliforms ( Escherichia coli & Klebsiella sp .)
      • Other Streptococci (S. uberis and dysgalactiae)
  • 9. Mastitis Control- Pathogens
    • Opportunists-
      • Coagulase negative staphylococci
  • 10. Host-Pathogen Interaction
    • The response
  • 11. Teat End Anatomy Alveolus
  • 12.  
  • 13.  
  • 14.  
  • 15.  
  • 16. Sentinel for Mastitis
    • The milk leucocyte (milk somatic cell)
  • 17. Mastitis Control- Practices
    • Contagious mastitis
    • Disinfectant in the wash water or pre-dip
      • Wash water- 10 ppm iodine
      • Predip 0.1% iodine, 10,000 ppm
      • Single Service towels
        • Cloth vs paper towel
  • 18. Mastitis Control- Practices
    • Contagious mastitis
    • Disposable or rubber gloves
    • Post dip (1.0% iodine)
    • Backflush (1 liter/cup,
      • 100ppm iodine)
  • 19. Mastitis Control- Practices
    • Segregation
    • Culling
    X
  • 20. Mastitis Control- Practices
    • Environmentals-
    • Cleanliness
    • Cleaning rear meter of stall
    • Clean and dry, dry, dry
    • Anticipate worst months
    • Culling?
  • 21. Mastitis Control- Pathogens
    • Opportunists-
    • Obiquitous
      • Coagulase negative staphylococci
      • TD/DCT-
  • 22. Mastitis Control- Practices
    • Lactating Cow therapy
      • Necessary but
      • Reflects the inability to prevent
    • Dry Cow therapy
      • Longer acting dose
      • More potent dose
      • No milk withhold
      • Meat withdrawal not a concern
  • 23. Mastitis Control- Practices
    • Dry Cow therapy
      • Longer acting dose
      • More potent dose
      • No milk withhold
      • Meat withdrawal not a concern
    • Other factors
      • Teat sealant
  • 24. Teat Sealant
  • 25. Mastitis Control- Practices
    • Dry Cow therapy and Teat Sealant
      • Bactericidal action of the antibiotic
      • Internal teat sealant- (bismuth subnitrate)
      • External teat sealant
      • Teat sealants as a physical barrier
  • 26. Mastitis Control- Practices
    • Opportunists
    • Milking equipment function
    • Teat Dip
  • 27. Relationship between milk leukocyte and milk quality
    • As leukocytes increase, quality decreases
    Casein Cheese yield Shelf life Taste
  • 28. Tissue Damage Result
    • Change in composition
      • Influx of salt ions
      • Decrease in lactose
      • Decrease in milk protein, casein
    • Decrease in production
  • 29. Mastitis Causes
    • $
    • Milk quality and quantity suffer
  • 30. Objectives of Discussion
    • 1) Define mastitis
    • 2) Describe the mastitis triangle
    • 3) Discuss host immunity
    • 4) Discuss the mastitis pathogens
    • 5) Describe how control over the environment can lead to mastitis abatement.
  • 31. Mastitis Control in a Nutshell
    • Keep the bugs away from the teats as best as possible
    • Help the cow achieve maximal immunity
    • Cow comfort, good nutrition but not immune/mineral/vitamin stimulants