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12.04.10

Heifer teats sprayed in the dry period with an iodine teat sanitizer have reduced Streptococcus uberis teat-end contamination and less Streptococcus uberis intra-mammary infections at calving

The bovine mammary gland is at greater risk for new intramammary infection during the peripartum period and first calf heifers usually have a higher incidence of clinical mastitis early in lactation than older cows. Management practices should be instituted to reduce the risk of new infection. A study evaluated the use of iodine-based teat sanitizer application during the peripartum period on the incidence of Streptococcus uberis intramammary infection post-calving. 397 heifers were enrolled and divided into treatment and control groups. Teats were swabbed for bacterial culture pre-treatment and milk samples were taken for culture post-calving. Treated animals had their teats sprayed three times weekly until calving. Teat spraying reduced the proportion of glands infected with Strep. uberis but had no effect on the incidence of clinical mastitis or on somatic cell counts.

Ressources

Lopez-Benavides, M.G., et al. 2009. Heifer teats sprayed in the dry period with an iodine teat sanitizer have reduced Streptococcus uberis teat-end contamination and less Streptococcus uberis intra-mammary infections at calving. Vet Micro. 134 (1-2):186-191