18 Friday January 2019
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Mastitis in Cattle

Mastitis in Cattle


Definition and Epidemiology:

  • Mastitis is inflammation of the mammary gland and is mostlydue to infection by bacterial or mycotic pathogens causing abnormal milk, changes in the udder.
  • Types of Mastitis are Subclinical, Clinical, Severe and Gangrenous mastitis.

Etiology:

Streptococci, Staphylococcus aureus, Streptococcus agalactiae, and Corynebacterium bovis, Coliforms and Mycoplasma spp.

Clinical sympotoms:

  1. Abnormal milk.
  2. Udder swelling, pain, redness, heat.
  3. Progress to necrosis with coldness of the affected area, bluish udder, exudation, and crepitation (in gangrenous mastitis).

Diagnosis:

  1. Clinical symptoms and case history.
  2. Bacterial culture to identify the causative agents.
  3. Antibacterial susceptibility testing.
  4. Treatment and Prevention:

 

In lactating cow:

  1. Oxytetracycline, injectable , 11 mg/kg is effective.
  2. Intramammary therapy (e.g. Penicillin, Amoxicillin, and Sulfonamides).
  3. Supportive treatment.
  4. Anti-inflammatory drugs (e.g. Dexamethasone injectable).
  5. All 4 quarters of infected cows should be treated.

In dry cow:

  1. Intramammary antibacterial (e.g.: Penicillin, Cloxacillin) at the end of lactation.
  2. Penicillin, Cloxacillin, Cephapirinin injectable, Ampicillin injectable or oral.
  3. In doubtful prognosis udder or quarter(s) amputation maybe recommended.