Alexander F, Davies M E
Vet Rec. 1979 Mar 24;104(12):253-5. doi: 10.1136/vr.104.12.253.
The antibacterial activity of three udder creams and two ointments was assayed using three different methods. Seven different bacterial genera were used as test organisms providing a total of 17 strains. Only a single strain of corynebacterium was inhibited by all the preparations. Certain strains of staphylococci and streptococci were inhibited by four of the preparations. The gram-negative organisms showed greatest resistance to the antibacterial agents tested. The in vitro assays showed only one of the five preparations to have even slight bactericidal activity. These preparations when tested on the teats of dry and lactating cows showed similar results to the in vitro experiments.
使用三种不同方法测定了三种乳房霜和两种软膏的抗菌活性。选用了七个不同的细菌属作为测试微生物，共提供了17个菌株。所有制剂仅抑制了单一株棒状杆菌。四种制剂抑制了某些葡萄球菌和链球菌菌株。革兰氏阴性菌对所测试的抗菌剂表现出最大抗性。体外试验表明，五种制剂中只有一种具有哪怕是轻微的杀菌活性。这些制剂在干奶牛和泌乳奶牛的乳头进行测试时，结果与体外实验相似。
