Effects of premilking teat preparation on spores of anaerobes, bacteria, and iodine residues in milk.
Premilking teat preparations using individual paper or cotton towels for either 6 or 20 s to reduce bacteria and iodine residues from teat surfaces were determined through Latin square designs applied to 50 cows. A cotton towel used for 20 s was most effective in cleaning teats, probably because of the physical structure of the towel, physical action on teat surface, and scrubbing of the teat ends. Premilking teat preparation of 6 s was inadequate to clean teats and to avoid iodine residues in milk. Teat end erosions increased iodine residue in milk. Two days after a treatment period, iodine content in milk from iodophor-dipped groups was similar to that of the undipped control group. Against our expectation, teat dipping with a .25% iodophor teat dip caused higher iodine residue in milk than a .50% iodophor teat dip. Differences in formulations and inert ingredients of iodophor teat dips indicate a need for further studies.
Rasmussen
M D
MD
Department of Animal Science, Cornell University, Ithaca, NY 14853.
Galton
D M
DM
Petersson
L G
LG
D000818:Animals; D001419:Bacteria / Q000254:growth & development*; D001421:Bacteria, Anaerobic / Q000254:growth & development / Q000302:isolation & purification; D002417:Cattle; D015169:Colony Count, Microbial; D004203:Disinfection; D004755:Enterobacteriaceae / Q000254:growth & development*; D005260:Female; D007455:Iodine / Q000032:analysis*; D008321:Mammary Glands, Animal / Q000033:anatomy & histology / Q000382:microbiology; D008414:Mastitis, Bovine / Q000517:prevention & control*; D008892:Milk / Q000032:analysis / Q000382:microbiology*; D013171:Spores, Bacterial / Q000302:isolation & purification
D007455:Iodine