Hogan J S, Smith K L, Todhunter D A, Schoenberger P S
Department of Dairy Science, Ohio State University, Ohio Agricultural Research and Development Center, Wooster 44691, USA.
J Dairy Sci. 1995 Nov;78(11):2502-6. doi: 10.3168/jds.S0022-0302(95)76879-5.
A natural exposure trial was conducted for 12 mo in a commercial herd of 125 lactating cows to compare the efficacy of an experimental barrier teat dip containing .55% chlorhexidine gluconate with the efficacy of a 1% iodophor for preventing new IMI and clinical mastitis. Teats of half of the cows were dipped in the experimental barrier product, and teats of the remaining half of the herd were dipped in the 1% iodophor product. Quarters dipped with the experimental barrier product had fewer new IMI caused by Escherichia coli, coagulase-negative staphylococci, or Gram-positive bacilli than did quarters dipped in the 1% iodophor. Incidence of new IMI caused by Serratia spp. and Pseudomonas spp. was greater for quarters dipped in the experimental barrier product than for quarters dipped in the 1% iodophor. Efficacy of the two teat dips against new IMI caused by Staphylococcus aureus, environmental streptococci, and Klebsiella spp. did not differ. Incidence of bacteriologically negative clinical cases of mastitis was greater in quarters dipped in the 1% iodophor than in quarters dipped in the experimental barrier product. Incidence of clinical mastitis cases caused by Staph. aureus, environmental streptococci, E. coli, Klebsiella spp., Serratia spp., and Pseudomonas spp. did not differ between treatment groups.
在一个拥有125头泌乳奶牛的商业牛群中进行了为期12个月的自然暴露试验，以比较含0.55%葡萄糖酸氯己定的实验性屏障乳头药浴液与1%碘伏预防新的隐性乳房炎和临床型乳房炎的效果。一半奶牛的乳头浸泡在实验性屏障产品中，牛群中另一半奶牛的乳头浸泡在1%碘伏产品中。与浸泡在1%碘伏中的乳腺相比，浸泡在实验性屏障产品中的乳腺由大肠杆菌、凝固酶阴性葡萄球菌或革兰氏阳性杆菌引起的新隐性乳房炎更少。浸泡在实验性屏障产品中的乳腺由沙雷氏菌属和假单胞菌属引起的新隐性乳房炎发病率高于浸泡在1%碘伏中的乳腺。两种乳头药浴液对金黄色葡萄球菌、环境链球菌和克雷伯菌属引起的新隐性乳房炎的效果没有差异。浸泡在1%碘伏中的乳腺中细菌性阴性临床型乳房炎的发病率高于浸泡在实验性屏障产品中的乳腺。治疗组之间由金黄色葡萄球菌、环境链球菌、大肠杆菌、克雷伯菌属、沙雷氏菌属和假单胞菌属引起的临床型乳房炎病例发病率没有差异。
