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
dc.contributor.author | Lopez-Benavides, Mario G. | |
dc.contributor.author | Williamson, John H. | |
dc.contributor.author | Lacy-Hulbert, S. Jane | |
dc.contributor.author | Cursons, Raymond T. | |
dc.coverage.spatial | Netherlands | en_NZ |
dc.date.accessioned | 2010-05-03T23:37:23Z | |
dc.date.available | 2010-05-03T23:37:23Z | |
dc.date.issued | 2009 | |
dc.description.abstract | Heifers managed under pastoral conditions are at risk from Streptococcus uberis mastitis infections at calving. A total of 397 heifers from six farms around New Zealand were enrolled in a study to identify and enumerate S. uberis on teat-ends of heifers in the peri-partum period, and to understand the effect of teat-spraying in the pre-calving period on the prevalence and incidence of S. uberis mastitis post-calving. Heifers were randomly assigned to Control or Sprayed groups. Sprayed heifers were teat-sprayed once, three times a week (Monday, Wednesday and Friday) with a commercial iodine-based teat sanitizer, starting at 3 weeks prior to calving and ending at day of calving. Across three farms, all glands of cows in both groups were sampled at calving to determine S. uberis intra-mammary infection (IMI) prevalence. For all farms, clinical mastitis (CM) cases detected during the week after calving were sampled and submitted for bacteriological analysis. Swabbing of teat-ends of 54 heifers from one farm showed that heifers had a pre-existing S. uberis contamination averaging 610 colony-forming units per swab (cfu/swab), at 3 weeks prior to calving. At calving, teat-end contamination was 560 cfu/swab for Sprayed heifers and 1775 cfu/swab for Control heifers. Two weeks after calving, teat-end contamination was similar between both groups, at 30 cfu/swab. The prevalence of S. uberis IMI was significantly lower in the Sprayed (3.5% glands) vs. the Control (7.4%) heifers in the first week after calving. There was a trend for Sprayed heifers (3.6% heifers) to have a lower incidence of S. uberis CM compared with Control heifers (7.4% heifers). It is concluded that teat-spraying in the dry period is a management option that could contribute to controlling heifer S. uberis mastitis in the transition period. | en |
dc.identifier.citation | Lopez-Benavides, M.G., Williamson, J.H., Lacy-Hulbert, S.J. & Cursons, R.T. (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. Veterinary Microbiology, 134(1-2), 186-191. | en |
dc.identifier.doi | 10.1016/j.vetmic.2008.09.027 | en |
dc.identifier.uri | https://hdl.handle.net/10289/3849 | |
dc.language.iso | en | |
dc.publisher | Elsevier | en_NZ |
dc.relation.isPartOf | Veterinary Microbiology | en_NZ |
dc.subject | mastitis | en |
dc.subject | streptococcus uberis | en |
dc.subject | management | en |
dc.subject | transition period | en |
dc.subject | peri-partum | en |
dc.subject | teat spray | en |
dc.title | 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 | en |
dc.type | Journal Article | en |
pubs.begin-page | 186 | en_NZ |
pubs.elements-id | 33465 | |
pubs.end-page | 191 | en_NZ |
pubs.issue | 1-2 | en_NZ |
pubs.volume | 134 | en_NZ |
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