DRAMIŃSKI - Milk mastitis

Environmental Mastitis is sometimes referred to as Environment-to-Cow mastitis. In this case the bacteria that cause the mastitis are found in the cow’s environment. The incidence of environmental mastitis tends to increase as the incidence of contagious mastitis decreases. The primary habitat of bacteria causing environmental mastitis is in the environment (feces, soil, bedding, or water). It can occur during environmental contact of the teats at milking time or between milkings. The major organisms causing environmental mastitis include the coliforms, the environmental Streptococcal species, and Pseudomonas species, but other organisms found in the cow’s environment can cause mastitis, too.

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Contagious mastitis is sometimes referred to as Cow-to-Cow mastitis because it is generally spread from cow to cow. The primary habitat of bacteria causing contagious mastitis is on the udder and in teat lesions. These bacteria have poor survival in the environment when not associated with the skin or in the gland. Contagious mastitis is the type of mastitis in chronic or subclinical mastitis. The infection is transmitted by milk-contaminated fomites at milking, by a sponge used to wash the cow’s teats, by the milker’s hands, and by the milking machine. The major organisms causing contagious mastitis are Streptococcus agalactiae, Staphylococcus aureus, or Mycoplasma

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