Teat apex coliform populations and coliform mastitis--a herd study.
A dairy herd having a high incidence of coliform mastitis was observed by means of pre- and post-milking samples and teat apex culture. Infected quarters were the major source of teat apex contamination with coliform bacteria and therefore constituted a risk to unifected quarters and to other cows. Coliform populations on the apex from environmental sources appeared to be transitory.
D000818:Animals; D002417:Cattle; D004754:Enterobacter / Q000302:isolation & purification; D004755:Enterobacteriaceae / Q000302:isolation & purification*; D004756:Enterobacteriaceae Infections / Q000662:veterinary*; D004926:Escherichia coli / Q000302:isolation & purification; D004927:Escherichia coli Infections / Q000382:microbiology / Q000662:veterinary; D005260:Female; D007709:Klebsiella / Q000302:isolation & purification; D007710:Klebsiella Infections / Q000382:microbiology / Q000662:veterinary; D007774:Lactation; D008321:Mammary Glands, Animal / Q000382:microbiology*; D008414:Mastitis, Bovine / Q000382:microbiology*; D008892:Milk / Q000382:microbiology; D011247:Pregnancy; D011552:Pseudomonas Infections / Q000382:microbiology / Q000662:veterinary; D011550:Pseudomonas aeruginosa / Q000302:isolation & purification