Brooks B W, Barnum D A
Can J Comp Med. 1982 Jul;46(3):267-9.
The susceptibility of lactating bovine udder quarters fitted with a polyethylene intramammary device to infection was investigated. Following experimental challenge with Streptococcus agalactiae or Staphylococcus aureus, the incidence of infection was significantly (p less than 0.05) lower in intramammary device-fitted quarters compared to control quarters. In general, total foremilk and strippings milk somatic cell counts for intramammary device-fitted and control quarters were not significantly (p less than 0.05) different. Differential foremilk and strippings milk somatic cell counts were significantly (p less than 0.05) higher in samples from intramammary device-fitted quarters compared to control quarters.
对安装有聚乙烯乳房内装置的泌乳期奶牛乳房象限的感染易感性进行了研究。在用无乳链球菌或金黄色葡萄球菌进行实验性攻毒后，与对照象限相比，安装乳房内装置的象限感染发生率显著降低（p<0.05）。一般来说，安装乳房内装置的象限和对照象限的总初乳和挤奶后的体细胞计数没有显著差异（p<0.05）。与对照象限相比，安装乳房内装置的象限的初乳和挤奶后差异体细胞计数显著更高（p<0.05）。
