Effect of a disinfectant udder wash and a post-milking teat dip on the bacterial population of the teat end and on the rate of new intramammary infection.
A pre-milking wash disinfectant procedure employing a 2% (w/v) chlorhexidine solution in a detergent basic did not reduce the rate of new intramammary infection in a lactating herd challenged with Staphylococcus aureus. Teat-end swabs showed no significant difference in the number of Staph. aureus isolated from the teat-ends pre-washed with either water, or water and chlorhexidine. In contrast, disinfecting teats after milking with a solution containing 5000 mg available iodine/l significantly reduced the staphylococcal population of the teat-ends and the rate of new intramammary infection, compared with teats not disinfected.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000188:drug therapy*; D002710:Chlorhexidine / Q000627:therapeutic use; D004202:Disinfectants / Q000494:pharmacology / Q000627:therapeutic use*; D005260:Female; D008321:Mammary Glands, Animal / Q000187:drug effects / Q000382:microbiology*; D013203:Staphylococcal Infections / Q000188:drug therapy / Q000662:veterinary*
D004202:Disinfectants; D002710:Chlorhexidine