Coliform organisms are normally responsible for mastitis episodes which occur during the first two months of lactation. Coliform mastitis results in acute, short lived infections which are usually eliminated from the udder by the cow s own defense mechanisms. Occasionally, coliform infections may be chronic. Antibiotic therapy has been reported to be of virtually no benefit for treatment or limiting the severity of infection. Supportive therapy and frequent milking are recommended treatment practices.
Sanitation is the key to prevention.
They are found in soil, contaminated water sources, animal feces and on the skin. Organisms are commonly transferred to cows via the eater supply, contaminated water hoses and nozzles, contaminated drugs and syringes, inadequately cleaned milking machines and improper dry cow therapy. Organisms can survive in high pH ranges and have been isolated from various teat dips. New infections can occur during or between milkings. Generally, pseudomonas organisms are not responsive to antibiotic therapy.