Goldberg J J, Murdough P A, Howard A B, Drechsler P A, Pankey J W, Ledbetter G A, Day L L, Day J D
Department of Animal and Food Sciences, University of Vermont, Burlington 05405.
J Dairy Sci. 1994 Mar;77(3):748-58. doi: 10.3168/jds.S0022-0302(94)77009-0.
A powdered teat dip designed for winter usage was evaluated for bacteriological efficacy and teat conditioning qualities. A positive control, natural exposure field trial was conducted for 3 mo on 509 lactating cows. Two sets of cows, primiparous and multiparous, were used. The trial compared efficacy of a powdered teat dip with a teat dip of 1% iodine plus 10% glycerin. Bacteriological efficacy among primiparous cows was equivalent for all major mastitis pathogens, environmental pathogens, and streptococci other than Streptococcus agalactiae. Efficacy was not equivalent against coagulase-negative staphylococci and all mastitis pathogens. Results suggested that the positive control product was more efficacious. Among multiparous cows, efficacy was equivalent against environmental mastitis pathogens and bacteriologically negative, clinical mastitis. The products were not equivalent against Staphylococcus aureus, coagulase-negative staphylococci, or all major mastitis pathogens, once again suggesting that the positive control product was more efficacious. Data indicated that germicidal activity of the powdered dip was not sufficient to reduce the incidence of new IMI caused by contagious or minor pathogens normally associated with teat skin. Application of a powdered postmilking teat dip during 3 winter mo in Idaho resulted in improved teat end condition among primiparous and multiparous dairy cows. Teat skin condition improved among primiparous but not among multiparous cows.
对一种专为冬季使用设计的粉状乳头浸液进行了细菌学功效和乳头调理质量评估。在509头泌乳奶牛上进行了为期3个月的阳性对照自然暴露田间试验。试验使用了两组奶牛，即初产奶牛和经产奶牛。该试验比较了一种粉状乳头浸液与1%碘加10%甘油的乳头浸液的功效。在初产奶牛中，对于所有主要的乳腺炎病原体、环境病原体和无乳链球菌以外的链球菌，细菌学功效相当。但对凝固酶阴性葡萄球菌和所有乳腺炎病原体的功效不等同。结果表明阳性对照产品更有效。在经产奶牛中，对环境性乳腺炎病原体和细菌学阴性的临床乳腺炎的功效相当。这两种产品对金黄色葡萄球菌、凝固酶阴性葡萄球菌或所有主要乳腺炎病原体的功效不等同，再次表明阳性对照产品更有效。数据表明，粉状浸液的杀菌活性不足以降低由通常与乳头皮肤相关的传染性或次要病原体引起的新的隐性乳房炎的发病率。在爱达荷州的3个冬季月份使用粉状挤奶后乳头浸液，初产和经产奶牛的乳头末端状况得到改善。初产奶牛的乳头皮肤状况有所改善，但经产奶牛没有。
