Sérieys F, Poutrel B
Institut de l'élevage, Le Rheu, France.
Vet Res. 1996;27(3):295-303.
In a first trial involving six commercial dairy herds and 291 cows for a period of eight months, pre-milking udder sanitation by dipping teats in a 0.25% polyvinylpyrrolidone (PVP) iodophor product followed by wiping with paper towels was compared in each herd with traditional teat washing and wiping with individual udder cloths. The incidence of new intramammary infections by Staphylococcus aureus, Streptococcus uberis and Corynebacterium bovis were significantly (P < 0.05) reduced, respectively by 48%, 60% and 47%. There were no significant differences in the two groups of cows for other intramammary infections, total bacterial counts, clostridia spore counts, iodine residues in milk or teat condition scores. In a second trial involving nine commercial dairy herds and 367 cows for a period of seven months, a teat dip containing nisin used before and after milking was compared in each herd with a classical 0.5% iodophor product used in the same way. There was no significant difference in the incidence of new intramammary infections, in spite of a higher rate of new Staphylococcus aureus infections in the group of cows teat-dipped with the nisin product (P = 0.06). It was concluded that pre-dipping with teat dips specifically designed to be safely used before milking can be more efficient than traditional pre-milking udder preparation. These teat dips, when used before and after milking, seem to be as efficient as products which should normally be restricted to post-milking use.
在第一项试验中，涉及6个商业奶牛场的291头奶牛，为期8个月，在每个牛群中，将乳头浸在0.25%的聚乙烯吡咯烷酮（PVP）碘伏产品中，然后用纸巾擦拭进行挤奶前乳房卫生处理，并与传统的用单独的乳房布清洗和擦拭乳头进行比较。金黄色葡萄球菌、乳房链球菌和牛棒状杆菌引起的新的乳房内感染发生率分别显著降低（P<0.05），降低了48%、60%和47%。两组奶牛在其他乳房内感染、总细菌计数、梭菌孢子计数、牛奶中的碘残留或乳头状况评分方面没有显著差异。在第二项试验中，涉及9个商业奶牛场的367头奶牛，为期7个月，在每个牛群中，将挤奶前后使用的含有乳链菌肽的乳头浸液与以相同方式使用的经典0.5%碘伏产品进行比较。新的乳房内感染发生率没有显著差异，尽管用乳链菌肽产品进行乳头浸液处理的奶牛组中金黄色葡萄球菌新感染率较高（P=0.06）。得出的结论是，专门设计用于挤奶前安全使用的乳头浸液预浸比传统的挤奶前乳房准备更有效。这些乳头浸液在挤奶前后使用时，似乎与通常应限于挤奶后使用的产品一样有效。
